subject:(agriculture)

University of Georgia

1. Raghunathan, Uthra Kalyani. Evaluating the performance of microfinance systems: a Bayesian efficiency analysis of lenders and their borrowers.

Degree: MS, Agricultural Economics, 2008, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/raghunathan_uthra_k_200808_ms

► This thesis consists of three studies that address the e ciency of micro nance institutions (MFIs) and their borrowing groups. The rst study utilizes a… (more)

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Raghunathan, U. K. (2008). Evaluating the performance of microfinance systems: a Bayesian efficiency analysis of lenders and their borrowers. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/raghunathan_uthra_k_200808_ms

Chicago Manual of Style (16^th Edition):

Raghunathan, Uthra Kalyani. “Evaluating the performance of microfinance systems: a Bayesian efficiency analysis of lenders and their borrowers.” 2008. Masters Thesis, University of Georgia. Accessed February 27, 2020. http://purl.galileo.usg.edu/uga_etd/raghunathan_uthra_k_200808_ms.

MLA Handbook (7^th Edition):

Raghunathan, Uthra Kalyani. “Evaluating the performance of microfinance systems: a Bayesian efficiency analysis of lenders and their borrowers.” 2008. Web. 27 Feb 2020.

Vancouver:

Raghunathan UK. Evaluating the performance of microfinance systems: a Bayesian efficiency analysis of lenders and their borrowers. [Internet] [Masters thesis]. University of Georgia; 2008. [cited 2020 Feb 27]. Available from: http://purl.galileo.usg.edu/uga_etd/raghunathan_uthra_k_200808_ms.

Council of Science Editors:

Raghunathan UK. Evaluating the performance of microfinance systems: a Bayesian efficiency analysis of lenders and their borrowers. [Masters Thesis]. University of Georgia; 2008. Available from: http://purl.galileo.usg.edu/uga_etd/raghunathan_uthra_k_200808_ms

University of Georgia

2. Price, Joseph Nathan. Technical efficiency in water usage: an analysis of differences among farm types and sizes in Georgia.

Degree: MS, Agricultural Economics, 2009, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/price_joseph_n_200908_ms

► The research presented in this paper is an examination of what factors affect the efficient/inefficient use of water among Georgia's farmers. Differences in intra-agriculture water… (more)

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Price, J. N. (2009). Technical efficiency in water usage: an analysis of differences among farm types and sizes in Georgia. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/price_joseph_n_200908_ms

Chicago Manual of Style (16^th Edition):

Price, Joseph Nathan. “Technical efficiency in water usage: an analysis of differences among farm types and sizes in Georgia.” 2009. Masters Thesis, University of Georgia. Accessed February 27, 2020. http://purl.galileo.usg.edu/uga_etd/price_joseph_n_200908_ms.

MLA Handbook (7^th Edition):

Price, Joseph Nathan. “Technical efficiency in water usage: an analysis of differences among farm types and sizes in Georgia.” 2009. Web. 27 Feb 2020.

Vancouver:

Price JN. Technical efficiency in water usage: an analysis of differences among farm types and sizes in Georgia. [Internet] [Masters thesis]. University of Georgia; 2009. [cited 2020 Feb 27]. Available from: http://purl.galileo.usg.edu/uga_etd/price_joseph_n_200908_ms.

Council of Science Editors:

Price JN. Technical efficiency in water usage: an analysis of differences among farm types and sizes in Georgia. [Masters Thesis]. University of Georgia; 2009. Available from: http://purl.galileo.usg.edu/uga_etd/price_joseph_n_200908_ms

University of Georgia

3. Thompson, Jeffrey J. Agriculture and gamebirds: a global synthesis with and emphasis on the Tinamiformes in Argentina.

Degree: PhD, Forest Resources, 2007, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/thompson_jeffrey_j_200708_phd

► I conducted a synthesis of agricultural changes during the mid-18th century until the present in the principal temperate agricultural regions of the world (western Europe,… (more)

▼ I conducted a synthesis of agricultural changes during the mid-18th century until the present in the principal temperate agricultural regions of the world (western Europe, the United States of America, the Republic of South Africa, and austral South America, with a concentration on the Republic of Argentina) from the perspective of the impacts that intensi¯cation in agriculture has on wildlife in agroecosystems. Additionally, I produced a review and synthesis of the e®ects of agricultural land use on birds, with an emphasis on the Galliformes. Based upon these analysis, and ¯eld research on the spotted tinamou (Nothura maculosa) in agroecosystems in the Pampas of Argentina, I discuss the past, present, and future implications for wildlife conservation and management in agroecosystems in the Pampas and Chaco and Yungas forest of Argentina. In the regions analyzed, agricultural production has become increasingly intensi¯ed since the mid-20th century; typi¯ed by increased mechanization, irrigation, agrochemical use, farm consolidation, regional specialization, area of cultivated pastures, and livestock densities. Combined, these reduce the amount, quality, and heterogeneity in habitats across scales from the region to within ¯elds, which the analysis revealed were the factors most in°uential in determining distribution and abundance of avian species dependent upon these systems. Speci¯cally, the loss of fallow or idle land, woody encroachment, homogeneity in cover types and vegetation structure and composition, indirect e®ects of pesticides on food availability, and earlier and more frequent mowing were key in explaining reductions in avian diversity and abundance in temperate agroecosystems. For the Galliformes the loss and/or degradation of preferred habitats, during both the breeding and non-breeding seasons, due to changes in agroecosystem management was related to observed decreases in populations and survival. Over-winter mortality increased during extremes in minimum temperature and snow cover, and was exacerbated where su±cient wintering cover was limited. Moreover, increased over-winter mortality was associated with the proximity of woody areas, which facilitates higher predation. The loss of preferred nesting habitat not only decreases the number of nesting individuals, but increases nest loss and mortality of incubating adults through increased predation and losses to agricultural activities. Of particular importance were decreases in the abundance of preferred arthropod prey for foraging chicks due to direct and indirect e®ects of pesticides, which were responsible for increased chick mortality. Although there exists a large body research into the e®ects of land use and birds, particularly gamebirds, little research exists for these species in Argentina or Latin America in general. In Argentina the most important gamebird species is the spotted tinamou (Nothura maculosa). This species has become increasingly scarce in a signi¯cant portion of its range, possibly due to agricultural intensi¯cation over the… Advisors/Committee Members: John Carroll.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Thompson, J. J. (2007). Agriculture and gamebirds: a global synthesis with and emphasis on the Tinamiformes in Argentina. (Doctoral Dissertation). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/thompson_jeffrey_j_200708_phd

Chicago Manual of Style (16^th Edition):

Thompson, Jeffrey J. “Agriculture and gamebirds: a global synthesis with and emphasis on the Tinamiformes in Argentina.” 2007. Doctoral Dissertation, University of Georgia. Accessed February 27, 2020. http://purl.galileo.usg.edu/uga_etd/thompson_jeffrey_j_200708_phd.

MLA Handbook (7^th Edition):

Thompson, Jeffrey J. “Agriculture and gamebirds: a global synthesis with and emphasis on the Tinamiformes in Argentina.” 2007. Web. 27 Feb 2020.

Vancouver:

Thompson JJ. Agriculture and gamebirds: a global synthesis with and emphasis on the Tinamiformes in Argentina. [Internet] [Doctoral dissertation]. University of Georgia; 2007. [cited 2020 Feb 27]. Available from: http://purl.galileo.usg.edu/uga_etd/thompson_jeffrey_j_200708_phd.

Council of Science Editors:

Thompson JJ. Agriculture and gamebirds: a global synthesis with and emphasis on the Tinamiformes in Argentina. [Doctoral Dissertation]. University of Georgia; 2007. Available from: http://purl.galileo.usg.edu/uga_etd/thompson_jeffrey_j_200708_phd

University of Georgia

4. Carleton, Renee Edwards. Disease ecology of a population of Eastern Bluebirds (Sialia sialis) in Georgia: a starting point.

Degree: PhD, Forest Resources, 2007, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/carleton_renee_e_200712_phd

► A population of Eastern Bluebirds (Sialia sialis) nesting within three grass-dominated agricultural sites in northwestern Georgia was monitored to estimate survival and reproduction, establish baseline… (more)

Subjects/Keywords: agriculture

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APA (6^th Edition):

Carleton, R. E. (2007). Disease ecology of a population of Eastern Bluebirds (Sialia sialis) in Georgia: a starting point. (Doctoral Dissertation). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/carleton_renee_e_200712_phd

Chicago Manual of Style (16^th Edition):

Carleton, Renee Edwards. “Disease ecology of a population of Eastern Bluebirds (Sialia sialis) in Georgia: a starting point.” 2007. Doctoral Dissertation, University of Georgia. Accessed February 27, 2020. http://purl.galileo.usg.edu/uga_etd/carleton_renee_e_200712_phd.

MLA Handbook (7^th Edition):

Carleton, Renee Edwards. “Disease ecology of a population of Eastern Bluebirds (Sialia sialis) in Georgia: a starting point.” 2007. Web. 27 Feb 2020.

Vancouver:

Carleton RE. Disease ecology of a population of Eastern Bluebirds (Sialia sialis) in Georgia: a starting point. [Internet] [Doctoral dissertation]. University of Georgia; 2007. [cited 2020 Feb 27]. Available from: http://purl.galileo.usg.edu/uga_etd/carleton_renee_e_200712_phd.

Council of Science Editors:

Carleton RE. Disease ecology of a population of Eastern Bluebirds (Sialia sialis) in Georgia: a starting point. [Doctoral Dissertation]. University of Georgia; 2007. Available from: http://purl.galileo.usg.edu/uga_etd/carleton_renee_e_200712_phd

University of Hawaii – Manoa

5. Bundhuwong, Chalita. Economic life of Malay Muslims in southernmost Thailand amidst ecological changes and unrest.

Degree: 2016, University of Hawaii – Manoa

URL: http://hdl.handle.net/10125/100577

►

Ph.D. University of Hawaii at Manoa 2013.

The economic life of rural Malay Muslims in Kampong Ai Hetae in southernmost Thailand is examined. The affects… (more)

▼

Ph.D. University of Hawaii at Manoa 2013.

The economic life of rural Malay Muslims in Kampong Ai Hetae in southernmost Thailand is examined. The affects of the politics of Thai state development on the ecosystem is explored together with local farming practices and resource uses amidst ecological changes, the market economy, conflict and violence. This dissertation also relates agriculture to other dimensions of rural transformation to understand economic life. The dissertation research revealed that economic development in the region has aimed to stabilize Thai nation-state ideology under the assumption that poverty is the main cause of the civil unrest. However, the development, which aims to incorporate Malay Muslim identity and ignores ecological values and the meaningful participation of local residents, has not been successful in suppressing the unrest nor in improving the economic life. Local residents have adapted farming practices to try to continue to use the changing ecological system and also to pursue new economic incentives. While trying to cope with unsupportive development and intermittent violence, the local residents face many serious risks all alone. The use of chemicals in farming and conflicts over common resources seem unavoidable. Agriculture is the foundation for households to gain better opportunities in the non-farm sector in the face of the rural transformations in the region. Modern lifestyle and consumption can't be separated from investment in farming. The intensification of Islam strengthened by the robust commercial farming in turn shapes the community's political power reproducing the failure of development. The local economic life is full of ups and downs although not destitute. However, increasing pressure on the land with population growth is unsustainable even with increasing involvement in non-farm activities, and it will bring more difficulties in the future. Even if development were sustainable and the rural poor could cultivate new skills, education, and networks for employment in non-farming jobs, the quality of life of local residents will still be depreciated if the conflicts continue in the south. Quality of life is not only economic, but also ecological, cultural, and political, and it will be diminished as long as the development is under the Thai nation-state ideology.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Bundhuwong, C. (2016). Economic life of Malay Muslims in southernmost Thailand amidst ecological changes and unrest. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/100577

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bundhuwong, Chalita. “Economic life of Malay Muslims in southernmost Thailand amidst ecological changes and unrest.” 2016. Thesis, University of Hawaii – Manoa. Accessed February 27, 2020. http://hdl.handle.net/10125/100577.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bundhuwong, Chalita. “Economic life of Malay Muslims in southernmost Thailand amidst ecological changes and unrest.” 2016. Web. 27 Feb 2020.

Vancouver:

Bundhuwong C. Economic life of Malay Muslims in southernmost Thailand amidst ecological changes and unrest. [Internet] [Thesis]. University of Hawaii – Manoa; 2016. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10125/100577.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bundhuwong C. Economic life of Malay Muslims in southernmost Thailand amidst ecological changes and unrest. [Thesis]. University of Hawaii – Manoa; 2016. Available from: http://hdl.handle.net/10125/100577

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

6. Johnson, Anwar Rashaad. Aspirations Realized? Exploring the Roles of High School Counselors when Discussing Colleges and Agricultural Career Paths with African American College Students.

Degree: 2013, Texas Digital Library

URL: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66730

► Fortifying the pipeline of underrepresented African Americans in agriculture can offer a practical solution to the industry???s scanty amount of involvement by people of color.… (more)

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Johnson, A. R. (2013). Aspirations Realized? Exploring the Roles of High School Counselors when Discussing Colleges and Agricultural Career Paths with African American College Students. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66730

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Johnson, Anwar Rashaad. “Aspirations Realized? Exploring the Roles of High School Counselors when Discussing Colleges and Agricultural Career Paths with African American College Students.” 2013. Thesis, Texas Digital Library. Accessed February 27, 2020. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66730.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Johnson, Anwar Rashaad. “Aspirations Realized? Exploring the Roles of High School Counselors when Discussing Colleges and Agricultural Career Paths with African American College Students.” 2013. Web. 27 Feb 2020.

Vancouver:

Johnson AR. Aspirations Realized? Exploring the Roles of High School Counselors when Discussing Colleges and Agricultural Career Paths with African American College Students. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66730.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Johnson AR. Aspirations Realized? Exploring the Roles of High School Counselors when Discussing Colleges and Agricultural Career Paths with African American College Students. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66730

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. hong, seukmin. Evaluation of Genetic Diversity and Stability of Colocasia Cultivars Using ISSR.

Degree: MS- Agriculture, Agriculture, 2017, Stephen F. Austin State University

URL: https://scholarworks.sfasu.edu/etds/129

► Using 44 ornamental Colocasia cultivars planted at Stephen F. Austin State University (Nacogdoches, TX), cultivar assessment, genetic diversity, stability, and relationship were examined with… (more)

Subjects/Keywords: Agriculture

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APA (6^th Edition):

hong, s. (2017). Evaluation of Genetic Diversity and Stability of Colocasia Cultivars Using ISSR. (Masters Thesis). Stephen F. Austin State University. Retrieved from https://scholarworks.sfasu.edu/etds/129

Chicago Manual of Style (16^th Edition):

hong, seukmin. “Evaluation of Genetic Diversity and Stability of Colocasia Cultivars Using ISSR.” 2017. Masters Thesis, Stephen F. Austin State University. Accessed February 27, 2020. https://scholarworks.sfasu.edu/etds/129.

MLA Handbook (7^th Edition):

hong, seukmin. “Evaluation of Genetic Diversity and Stability of Colocasia Cultivars Using ISSR.” 2017. Web. 27 Feb 2020.

Vancouver:

hong s. Evaluation of Genetic Diversity and Stability of Colocasia Cultivars Using ISSR. [Internet] [Masters thesis]. Stephen F. Austin State University; 2017. [cited 2020 Feb 27]. Available from: https://scholarworks.sfasu.edu/etds/129.

Council of Science Editors:

hong s. Evaluation of Genetic Diversity and Stability of Colocasia Cultivars Using ISSR. [Masters Thesis]. Stephen F. Austin State University; 2017. Available from: https://scholarworks.sfasu.edu/etds/129

8. Gollub, Elisa Rachel. Many Perestroikas: A Social History of Collective Farm Privatization in Russia.

Degree: PhD, History, 2011, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:11340/

► The dissertation provides a social history of collective farm privatization, focusing specifically on three former collective farms in the Nizhnii Novgorod, Riazan� and Krasnodar regions… (more)

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Gollub, E. R. (2011). Many Perestroikas: A Social History of Collective Farm Privatization in Russia. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:11340/

Chicago Manual of Style (16^th Edition):

Gollub, Elisa Rachel. “Many Perestroikas: A Social History of Collective Farm Privatization in Russia.” 2011. Doctoral Dissertation, Brown University. Accessed February 27, 2020. https://repository.library.brown.edu/studio/item/bdr:11340/.

MLA Handbook (7^th Edition):

Gollub, Elisa Rachel. “Many Perestroikas: A Social History of Collective Farm Privatization in Russia.” 2011. Web. 27 Feb 2020.

Vancouver:

Gollub ER. Many Perestroikas: A Social History of Collective Farm Privatization in Russia. [Internet] [Doctoral dissertation]. Brown University; 2011. [cited 2020 Feb 27]. Available from: https://repository.library.brown.edu/studio/item/bdr:11340/.

Council of Science Editors:

Gollub ER. Many Perestroikas: A Social History of Collective Farm Privatization in Russia. [Doctoral Dissertation]. Brown University; 2011. Available from: https://repository.library.brown.edu/studio/item/bdr:11340/

Purdue University

9. Jahed, Khalil Rahman. Male and female interaction in apple: Pollen tube growth, fruit set, fruit quality, and return bloom.

Degree: MS, Horticulture and Landscape Architecture, 2015, Purdue University

URL: http://docs.lib.purdue.edu/open_access_theses/495

► In apple, adequate and appropriate pollination and fertilization is required for fruit set, fruit quality and subsequent fruit growth. Pollen source, pollen-style interaction and… (more)

▼ In apple, adequate and appropriate pollination and fertilization is required for fruit set, fruit quality and subsequent fruit growth. Pollen source, pollen-style interaction and compatibility, and ample pollen tube growth are potentially highly influential factors on the fertilization and fruit setting process. Pollinizer is considered to be one of the influential factors and has a remarkable impact on fertilization. However, basic information on the level of pollinizer compatibility and its contribution to yield is lacking for many commercial apple cultivars. Hence, we conducted these experiments to compare pollinizers in terms of pollen tube growth, fruit set, fruit quality and return bloom. Honeycrisp, Gala, and Fuji cultivars were hand-pollinated by Crabapple, Red Delicious or Golden Delicious pollen. Pollen source had a significant influence on pollen tube growth and pollen tube enrichment in to the base of the style. Golden Delicious pollen had the highest and fastest growth followed by Red Delicious and Crabapple. Crabapple was not an effective pollinizer for Honeycrisp resulting in low fruit set, but both Red Delicious and Golden Delicious were adequate pollinizers of Honeycrisp apples. Pollen tube growth increased overtime after pollination and generally reached the base of the style 96 hours after pollination. ^ Fruit quality attributes and return bloom were generally not affected by pollen source. However, Crabapple pollen resulted in the lowest number of seeds per fruit in all cultivars. Seed number was positively correlated with Gala and Honeycrisp fruit fresh weight regardless of the pollen source. A significantly positive correlation was found between pistil number and seed number indicating that reducing pistil number is an effective experimental tool to regulate seed number. The percent return boom was dramatically decreased with increasing individual fruit fresh weight. Likewise, percent return boom was reduced with increasing seed number per fruit. These results suggest that pollen source and seed number per fruit influence fruit set, fruit quality, and biennial bearing potential of Honeycrisp. This has real world implications for orchard design. Based on our findings, we recommend growers to do not plant Ralph-Shay or Malus floribunda Crabapples as pollinizers for Honeycrisp. Advisors/Committee Members: Peter M. Hirst, Peter M. Hirst, Hazel Wetzstein, Bruce P. Bordelon, Robert E. Pruitt.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Jahed, K. R. (2015). Male and female interaction in apple: Pollen tube growth, fruit set, fruit quality, and return bloom. (Thesis). Purdue University. Retrieved from http://docs.lib.purdue.edu/open_access_theses/495

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jahed, Khalil Rahman. “Male and female interaction in apple: Pollen tube growth, fruit set, fruit quality, and return bloom.” 2015. Thesis, Purdue University. Accessed February 27, 2020. http://docs.lib.purdue.edu/open_access_theses/495.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jahed, Khalil Rahman. “Male and female interaction in apple: Pollen tube growth, fruit set, fruit quality, and return bloom.” 2015. Web. 27 Feb 2020.

Vancouver:

Jahed KR. Male and female interaction in apple: Pollen tube growth, fruit set, fruit quality, and return bloom. [Internet] [Thesis]. Purdue University; 2015. [cited 2020 Feb 27]. Available from: http://docs.lib.purdue.edu/open_access_theses/495.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jahed KR. Male and female interaction in apple: Pollen tube growth, fruit set, fruit quality, and return bloom. [Thesis]. Purdue University; 2015. Available from: http://docs.lib.purdue.edu/open_access_theses/495

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Purdue University

10. Mitchell, Karen Anne. The effect of biochar on the growth of agricultural weed species.

Degree: MS, Botany and Plant Pathology, 2015, Purdue University

URL: http://docs.lib.purdue.edu/open_access_theses/582

► Biochar, a carbon-rich residue similar to charcoal, has been proposed as a soil amendment to improve soil quality and increase crop yields while simultaneously… (more)

▼ Biochar, a carbon-rich residue similar to charcoal, has been proposed as a soil amendment to improve soil quality and increase crop yields while simultaneously mitigating climate change by the sequestration of carbon. The beneficial effect of biochar on crops may extend to weed species and, although it is well known that weeds reduce crop yields, there is little published research on the effect of biochar on agricultural weed species. In a series of greenhouse and growth chamber experiments, three questions were addressed. First, how does nitrogen interact with biochar produced from a single feedstock to affect weeds? Second, how do differences in biochar feedstock affect root growth and root system architecture? Finally, how do differences in biochar feedstocks affect weed and crop growth? In the first experiment, three common weed species, barnyardgrass (Echinochloa crus-galli L. Beauv.), large crabgrass (Digitaria sanguinalis L. Scop.), and redroot pigweed (Amaranthus retroflexus L.), were grown to maturity under greenhouse conditions using a factorial design with biochar (0 and 2% of the soil dry weight) and nitrogen (0 and 14 g N m-2) treatments. Nitrogen increased barnyardgrass and redroot pigweed total dry weight and large crabgrass panicle dry weight. Biochar increased barnyardgrass height by 22% and total dry weight by 47% but did not affect root : shoot biomass partitioning. Biochar reduced redroot pigweed height by 30% but increased branch dry weight by 95%. Finally, biochar increased large crabgrass shoot dry weight by 34% but reduced root dry weight 30% suggesting that biochar allowed large crabgrass to partition more biomass to shoots than roots. In the second experiment, we examined the effects of two types of biochar on large crabgrass root system architecture using a rhizobox mesocosm. Root growth of large crabgrass varied with the type of biochar used; however, biochar did not affect total plant dry weight. The high-nutrient biochar increased above-ground dry weight and the low-nutrient biochar increased below-ground dry weight when compared to plants grown in the unamended soil. When given a choice between unamended and biochar-amended soil, large crabgrass roots grew preferentially in the biochar-amended soil, regardless of biochar type. In the final experiment, we examined the effect of two types of biochar on the growth of two crop and two weed species grown to maturity under greenhouse conditions. Biochar increased the growth of both crop species suggesting that the incorporation of biochar, especially high-nutrient biochar, into temperate agricultural soils may increase crop yields. However, biochar also increased the growth of both weed species, which may complicate current weed management practices. Overall, this research suggests that biochar has the potential to alter root system architecture and to increase the growth of common weed species. Biochar may therefore exacerbate weed problems in agricultural systems. Advisors/Committee Members: Kevin Gibson, Kevin Gibson, Janna Beckerman, Anjali Iyer-Pascuzzi, Jeff Volenec.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Mitchell, K. A. (2015). The effect of biochar on the growth of agricultural weed species. (Thesis). Purdue University. Retrieved from http://docs.lib.purdue.edu/open_access_theses/582

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mitchell, Karen Anne. “The effect of biochar on the growth of agricultural weed species.” 2015. Thesis, Purdue University. Accessed February 27, 2020. http://docs.lib.purdue.edu/open_access_theses/582.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mitchell, Karen Anne. “The effect of biochar on the growth of agricultural weed species.” 2015. Web. 27 Feb 2020.

Vancouver:

Mitchell KA. The effect of biochar on the growth of agricultural weed species. [Internet] [Thesis]. Purdue University; 2015. [cited 2020 Feb 27]. Available from: http://docs.lib.purdue.edu/open_access_theses/582.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mitchell KA. The effect of biochar on the growth of agricultural weed species. [Thesis]. Purdue University; 2015. Available from: http://docs.lib.purdue.edu/open_access_theses/582

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

The Ohio State University

11. Hall, Kelsey Lynn. Ohio Non-Organic Grain Farmers' Perceptions of Organic Farming: An Application of the Theory of Planned Behavior.

Degree: MS, Human and Community Resource Development, 2008, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1406807326

► American and international studies have compared the farming methods, attitudes, demographic characteristics, and communication channels of non-organic and organic farmers. Other studies have only described… (more)

▼ American and international studies have compared the farming methods, attitudes, demographic characteristics, and communication channels of non-organic and organic farmers. Other studies have only described organic farmers' attitudes toward farming organically, while some studies have revealed the barriers to using organic farming by non-organic farmers. This study was unique since researchers have not explored the perceptions of organic farming by non-organic Ohio corn and wheat growers. The theory of planned behavior was the framework used for this study to describe the attitude toward using non-organic and organic farming methods, subjective norms that influence decisions about farming organically, and perceived behavioral control. Additional components in this study were the barriers toward adopting organic farming, importance of communication channels, and the relationship between demographic characteristics of Ohio grain farmers and their attitude formation.A descriptive survey was mailed to a sample of 320 farmers who were members of the Ohio Corn Growers Association or Ohio Wheat Growers Association. The researcher administered the survey using Dillman's Tailored Design Method. Of the 243 surveys returned, 205 were completed.Respondents reported a positive attitude toward using non-organic farming methods, while a more negative attitude toward using organic farming was reported. Ohio grain farmers in this study believed that organic farming would have more negative outcomes and identified barriers toward adoption.Ohio grain farmers did not indicate pressure from subjective norms to adopt organic farming. Items also measured respondents’ motivation to comply with the opinion of subjective norms. Respondents reported that they did not regard the opinions of subjective norms on what should be done on their farms. Interpersonal communication sources were considered more important influencers than mass media channels when deciding to adopt or not adopt farming practices.Recommendations were made for further research. The researcher also suggested how agricultural communication faculty, Extension educators, and commodity organizations could use mass media and interpersonal communication sources to disseminate messages based on the findings. There were recommendations for how the findings on subjective norms and communication channels may impact curriculum taught by agricultural communication faculty. Advisors/Committee Members: Rhoades, Emily (Advisor).

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Hall, K. L. (2008). Ohio Non-Organic Grain Farmers' Perceptions of Organic Farming: An Application of the Theory of Planned Behavior. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1406807326

Chicago Manual of Style (16^th Edition):

Hall, Kelsey Lynn. “Ohio Non-Organic Grain Farmers' Perceptions of Organic Farming: An Application of the Theory of Planned Behavior.” 2008. Masters Thesis, The Ohio State University. Accessed February 27, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406807326.

MLA Handbook (7^th Edition):

Hall, Kelsey Lynn. “Ohio Non-Organic Grain Farmers' Perceptions of Organic Farming: An Application of the Theory of Planned Behavior.” 2008. Web. 27 Feb 2020.

Vancouver:

Hall KL. Ohio Non-Organic Grain Farmers' Perceptions of Organic Farming: An Application of the Theory of Planned Behavior. [Internet] [Masters thesis]. The Ohio State University; 2008. [cited 2020 Feb 27]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1406807326.

Council of Science Editors:

Hall KL. Ohio Non-Organic Grain Farmers' Perceptions of Organic Farming: An Application of the Theory of Planned Behavior. [Masters Thesis]. The Ohio State University; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1406807326

Clemson University

12. Chou, Chiao-ying. SIMULATING AND ASSESSING THE SOUTHERN PINE BEETLE SPOT GROWTH ON MANAGEMENT SCENARIOS USING GIS-BASED MODEL AND 3-D LANDSCAPE VISUALIZATION.

Degree: PhD, Forest Resources, 2010, Clemson University

URL: https://tigerprints.clemson.edu/all_dissertations/588

► Models for simulating southern pine beetle (SPB), Dendroctonus frontalis Zimm., population dynamics and infestation risk are quite well developed. However, most of them are not… (more)

▼ Models for simulating southern pine beetle (SPB), Dendroctonus frontalis Zimm., population dynamics and infestation risk are quite well developed. However, most of them are not spatially explicit models. In this study, a GIS-based model, SPBSPOT, is developed for simulating SPB spot growth using ArcGIS software with ArcObject and Visual Basic for Application. SPBSPOT is built by five subroutines. Individual interfaces are developed for each of them to allow users the flexibility to specify stand situations and design management scenarios based on their individual needs. Although integrated pest management systems are currently adopted, SPB management is still challenging because of diverse land ownership, dynamic forest landscapes, and uncertainty of management strategy effects. We incorporate SPBSPOT into a three-dimensional (3-D) visualization by using the visual simulator Visual Nature Studio. 3-D landscape visualization is comprised of multi-spatial, multi-temporal, and multi-expression elements. Supplemented with geographic information system (GIS) databases, remote sensing images, and simulation models, this technique can provide a comprehensive communication medium for decision makers, scientists, and the public with diverse backgrounds on the SPB management. In chapters three and four, we generate GIS maps of possible infestations as the basis of 3-D visualizations to simulate spatial patterns of spot growth under a variety of management scenarios (i.e., thinning, stand restoration, and stand species mixture). In chapter five, SPBSPOT is used to evaluate the ecological and economic effects of salvage operations under four levels of damage severity. In chapter six, an integrated technique of GIS, historic remote sensing images, and 3-D visualization is used to construct a variety of realistic animations depicting effects following SPB infestations on different restoration scenarios (i.e., thinning and prescribed burning). The results indicate that 1) different silvicultural treatments are able to reduce the number of infested trees, but the overall impact on the affected area may not necessarily be changed, 2) thinning treatment responded best (i.e., least damage) to SPB infestation on forest restoration stands, while the thinning + burning treatment may have resulted in too much stress to increase the stand's susceptibility, 3) salvage operation is not necessary for the light severity infestation, but it has critical effects for the higher severity ones. In conclusion, this well-organized GIS-based 3-D visualization can be used in the combination of complex information to enhance alternative management strategy evaluation. Advisors/Committee Members: Song, Bo, Hedden , Roy L, Williams , Thomas M, Culin , Joseph D, Post , Christopher J.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Chou, C. (2010). SIMULATING AND ASSESSING THE SOUTHERN PINE BEETLE SPOT GROWTH ON MANAGEMENT SCENARIOS USING GIS-BASED MODEL AND 3-D LANDSCAPE VISUALIZATION. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/588

Chicago Manual of Style (16^th Edition):

Chou, Chiao-ying. “SIMULATING AND ASSESSING THE SOUTHERN PINE BEETLE SPOT GROWTH ON MANAGEMENT SCENARIOS USING GIS-BASED MODEL AND 3-D LANDSCAPE VISUALIZATION.” 2010. Doctoral Dissertation, Clemson University. Accessed February 27, 2020. https://tigerprints.clemson.edu/all_dissertations/588.

MLA Handbook (7^th Edition):

Chou, Chiao-ying. “SIMULATING AND ASSESSING THE SOUTHERN PINE BEETLE SPOT GROWTH ON MANAGEMENT SCENARIOS USING GIS-BASED MODEL AND 3-D LANDSCAPE VISUALIZATION.” 2010. Web. 27 Feb 2020.

Vancouver:

Chou C. SIMULATING AND ASSESSING THE SOUTHERN PINE BEETLE SPOT GROWTH ON MANAGEMENT SCENARIOS USING GIS-BASED MODEL AND 3-D LANDSCAPE VISUALIZATION. [Internet] [Doctoral dissertation]. Clemson University; 2010. [cited 2020 Feb 27]. Available from: https://tigerprints.clemson.edu/all_dissertations/588.

Council of Science Editors:

Chou C. SIMULATING AND ASSESSING THE SOUTHERN PINE BEETLE SPOT GROWTH ON MANAGEMENT SCENARIOS USING GIS-BASED MODEL AND 3-D LANDSCAPE VISUALIZATION. [Doctoral Dissertation]. Clemson University; 2010. Available from: https://tigerprints.clemson.edu/all_dissertations/588

Stellenbosch University

13. Mathys, Ilse Lois. Soil health and quality concept in agricultural extension and soil science : an assessment of topsoil conditions in a long term vineyard soil management trail in Robertson, South Africa.

Degree: Soil Science, 2011, Stellenbosch University

URL: http://hdl.handle.net/10019.1/6544

►

Thesis (MScAgric (Soil Science)) – University of Stellenbosch, 2011.

ENGLISH ABSTRACT: The natural resource condition or health has been accepted as a valuable indicator of sustainable… (more)

▼

Thesis (MScAgric (Soil Science)) – University of Stellenbosch, 2011.

ENGLISH ABSTRACT: The natural resource condition or health has been accepted as a valuable indicator of sustainable land use. The assessment of soil health (quality) has become a valuable tool in determining the sustainability of land management systems. This work aims to evaluate the sustainability of soil management practices in agricultural extension for vineyards in Robertson, South Africa based, on the current approach of the concept of soil health and soil quality, as well as to briefly explore the present reservations regarding the definition of the concept. The soil management treatments include a mechanical weed control, chemical weed control, annual addition of straw mulch, annual cover crop and perennial cover crop. The objective of study is to (i) identify suitable soil health (quality) indicators for vineyards in the study area; (ii) analyze the soil health (quality) indicators for different soil management treatments; (iii) evaluate the effect of various soil management treatments on the overall soil functionality, by comparing measured indicators to the soil property threshold values, for optimal vine growth; iv) establish a more consistent understanding and use of the terms health and quality, as understood and used in the general science community, with particular reference to the public health system. The soil physical, chemical and biological properties which were selected as indicators of soil health (quality) based on specific criteria similar to previous work done on the concept. The properties selected include soil texture, gravimetric water content, bulk density, soil aeration, water aggregate stability, soil pH, EC, available N,P,K , soil organic matter content, soil microbial biomass, potential mineralizable nitrogen and soil respiration. The study makes use of methods of analysis previously used for soil health and soil quality assessments, as well as soil analytical methods as accepted by experienced soil scientist within the study area. The soil was sampled on three separate events to depths of 0-200 mm for initial characterization of soil and 0-50 mm to compare soil health (quality) Between tracks and In tracks of treatment plots. The values obtained for each property were compared with the optimum for vineyards and ranked accordingly. The treatment that resulted in the most desirable soil health (quality) was the straw mulch and perennial cover crop treatments.

AFRIKAANSE OPSOMMING: Die toestand of gesondheid van natuurlike hulpbronne is aanvaar as `n waardevolle aanduiding van volhoubare grondgebruik. Die assessering van grond gesondheid (kwaliteit) is 'n waardevolle hulpmiddel in die bepaling van die volhoubaarheid van grond bestuur stelsels. Hierdie werkstuk poog om die volhoubaarheid van grond bestuurs praktyke te evalueer vir wingerde in Robertson, Suid-Afrika wat baseer is op die huidige benadering van grond gesondheid en…

Advisors/Committee Members: Rozanov, Andrei, Hoffman, J. E., University of Stellenbosch. Faculty of AgriSciences. Dept. of Soil Science..

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Mathys, I. L. (2011). Soil health and quality concept in agricultural extension and soil science : an assessment of topsoil conditions in a long term vineyard soil management trail in Robertson, South Africa. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/6544

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mathys, Ilse Lois. “Soil health and quality concept in agricultural extension and soil science : an assessment of topsoil conditions in a long term vineyard soil management trail in Robertson, South Africa.” 2011. Thesis, Stellenbosch University. Accessed February 27, 2020. http://hdl.handle.net/10019.1/6544.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mathys, Ilse Lois. “Soil health and quality concept in agricultural extension and soil science : an assessment of topsoil conditions in a long term vineyard soil management trail in Robertson, South Africa.” 2011. Web. 27 Feb 2020.

Vancouver:

Mathys IL. Soil health and quality concept in agricultural extension and soil science : an assessment of topsoil conditions in a long term vineyard soil management trail in Robertson, South Africa. [Internet] [Thesis]. Stellenbosch University; 2011. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10019.1/6544.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mathys IL. Soil health and quality concept in agricultural extension and soil science : an assessment of topsoil conditions in a long term vineyard soil management trail in Robertson, South Africa. [Thesis]. Stellenbosch University; 2011. Available from: http://hdl.handle.net/10019.1/6544

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cal Poly

14. Adams, Kimberly Ellen. Influence of Vineyard Floor Management Practices on Soil Aggregate Stability, Total Soil Carbon and Grapevine Yield.

Degree: MS, 2011, Cal Poly

URL: https://digitalcommons.calpoly.edu/theses/612 ; 10.15368/theses.2011.170

► Soil aggregates provide pore spaces of various sizes supplying water, gases and nutrients to plant roots and microorganisms, and facilitate moisture retention and availability.… (more)

▼ Soil aggregates provide pore spaces of various sizes supplying water, gases and nutrients to plant roots and microorganisms, and facilitate moisture retention and availability. Soil aggregate stability is indicative of soil biological and structural health, and is increased by soil carbon derived from plant roots and the soil microbial biomass. Aggregate stability and soil carbon can be enhanced by increasing organic matter through compost additions or by planting cover crops. Additionally, aggregate stability is enhanced by arbuscular mycorrhizal fungi (AMF) that form a symbiotic association with plant roots, and consolidate soil particles into aggregates through hyphal networks and through the production of glomalin, binding soil particles together. The use of herbicides decreases soil carbon as it removes vegetation and the microorganisms associated with it. Soils having poor aggregate stability slake and disperse into primary soil particles becoming dense and subject to erosion when exposed to heavy rains. The use of herbicides amplifies this risk as it removes vegetation, leaving the soil bare, with nothing to absorb rainfall impact. The effect of vineyard floor management practices on aggregate stability, soil carbon and grapevine fruit yield was studied at two vineyard sites located within the Estrella district of Paso Robles, CA. In late fall of 2008, treatments were applied to the vine line including an herbicide, an herbicide plus compost, a cover crop, a cover crop plus compost and a cover crop plus a fungal inoculant treatment. The control had no herbicides, compost, cover crop, or fungal inoculant applied to it. The cover crop treatments were applied at 30 lbs/ac consisting of a mixture of 20 % blando brome (Bromus hordeaceus), 20 % Zorro fescue (Vulpia myuros), 30 % crimson clover (Trifolium incarnatum) and 30 % subterranean clover (Trifolium subterraneum). Commercially available compost was applied at a rate of five tons per acre. The fungal inoculant was applied at eight pounds per acre, consisting of the AMF: Glomus intraradices, G. mosseae, G. aggregatum and G. etunicatum each at 32 propagules/ cc. Samples were collected in the spring of 2009 and the winter of 2010. Percent carbon was significantly higher in the areas where compost applications were received (P=0.014). Cover crops did not significantly increase the level of carbon in the soil (P=0.253). Compost and cover crops significantly increased the amount of > 4.0 mm soil aggregates (P=0.004 for compost and P=0.027 for cover crops). Herbicide treatments significantly reduced the amount of > 4.0 mm aggregates (P=0.028). Fungal inoculants had no effect on > 4.0 mm aggregate stability (P=0.361). Compost significantly increased mean fruit weight (P=0.041). These results suggest that the addition of compost and cover crops are an effective… Advisors/Committee Members: Thomas J. Rice.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Adams, K. E. (2011). Influence of Vineyard Floor Management Practices on Soil Aggregate Stability, Total Soil Carbon and Grapevine Yield. (Masters Thesis). Cal Poly. Retrieved from https://digitalcommons.calpoly.edu/theses/612 ; 10.15368/theses.2011.170

Chicago Manual of Style (16^th Edition):

Adams, Kimberly Ellen. “Influence of Vineyard Floor Management Practices on Soil Aggregate Stability, Total Soil Carbon and Grapevine Yield.” 2011. Masters Thesis, Cal Poly. Accessed February 27, 2020. https://digitalcommons.calpoly.edu/theses/612 ; 10.15368/theses.2011.170.

MLA Handbook (7^th Edition):

Adams, Kimberly Ellen. “Influence of Vineyard Floor Management Practices on Soil Aggregate Stability, Total Soil Carbon and Grapevine Yield.” 2011. Web. 27 Feb 2020.

Vancouver:

Adams KE. Influence of Vineyard Floor Management Practices on Soil Aggregate Stability, Total Soil Carbon and Grapevine Yield. [Internet] [Masters thesis]. Cal Poly; 2011. [cited 2020 Feb 27]. Available from: https://digitalcommons.calpoly.edu/theses/612 ; 10.15368/theses.2011.170.

Council of Science Editors:

Adams KE. Influence of Vineyard Floor Management Practices on Soil Aggregate Stability, Total Soil Carbon and Grapevine Yield. [Masters Thesis]. Cal Poly; 2011. Available from: https://digitalcommons.calpoly.edu/theses/612 ; 10.15368/theses.2011.170

Auburn University

15. Doukopoulos, Alexandros. Characterization of New Populations in Sunn Hemp (Crotalaria juncea L.) and Relationship of Their Traits to Yield .

Degree: 2012, Auburn University

URL: http://hdl.handle.net/10415/2995

► Sunn hemp (Crotalaria juncea L.) is a short-day, erect shrubby annual, generally 1 to 4 m in height. It is a candidate species for crop… (more)

▼ Sunn hemp (Crotalaria juncea L.) is a short-day, erect shrubby annual, generally 1 to 4 m in height. It is a candidate species for crop rotation schemes as a means of weed suppression and as a green manure crop to improve soils and reduce root-knot nematode (Meloidogyne spp.) infestations. An ongoing breeding program has resulted in a locally adapted population, ‘Selection PBU,’ that varies significantly from the non-adapted ones. In 2007 a field study was undertaken, using two cycles of selection, in order to determine the correlation between juvenile and mature-plant traits and to evaluate the effect of young plant selection on forage yield and other mature-plant traits. Furthermore, several cycles of breeding populations, their parental material and the tropical cultivar ‘Tropic Sun’, for a total of eight populations, were tested in Alabama in 2008 and 2009. Their morphological characteristics were evaluated to identify how the changes in photoperiodicity requirements affected the more recent selection cycles compared to their parental populations. Additionally, germination and growth chamber studies were conducted to determine the effect of temperature and genotype on seedling emergence and early plant growth. Our results indicated that selecting for traits, such as height and number of leaves at four weeks can significantly improve biomass, both at flowering and harvesting time, as well as seed yield. There is potential for future selections to reach higher uniformity, as shown by the higher heritability values for the latest selection cycle compared to the more recent one. Applying equal selection intensity as an even split of 31.6% among, and 31.6% within, family selection, produces the largest genetic gain. Selection PBU was the best or among the best populations for morphological characteristics important for the release of a cultivar in a temperate environment. The most important characteristics were number of days until flowering, days until harvesting, biomass and seed weight, as well as seed quality. The variety ‘‘Tropic Sun’’ was the poorest performer since it produced excessive vegetative matter, very few flowers and no seed. The breeding program has been successful in producing plants that are not photoperiodic and they have become adapted to the sub-tropical conditions of the Southeast. In the process, the plants have become more compact, and they flower and are ready for harvest much earlier than their parental populations. This has allowed producing sufficient amounts of good quality seed to allow for seed-increase and for the continuation of the breeding cycles. Advisors/Committee Members: Mosjidis, Jorge (advisor).

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Doukopoulos, A. (2012). Characterization of New Populations in Sunn Hemp (Crotalaria juncea L.) and Relationship of Their Traits to Yield . (Doctoral Dissertation). Auburn University. Retrieved from http://hdl.handle.net/10415/2995

Chicago Manual of Style (16^th Edition):

Doukopoulos, Alexandros. “Characterization of New Populations in Sunn Hemp (Crotalaria juncea L.) and Relationship of Their Traits to Yield .” 2012. Doctoral Dissertation, Auburn University. Accessed February 27, 2020. http://hdl.handle.net/10415/2995.

MLA Handbook (7^th Edition):

Doukopoulos, Alexandros. “Characterization of New Populations in Sunn Hemp (Crotalaria juncea L.) and Relationship of Their Traits to Yield .” 2012. Web. 27 Feb 2020.

Vancouver:

Doukopoulos A. Characterization of New Populations in Sunn Hemp (Crotalaria juncea L.) and Relationship of Their Traits to Yield . [Internet] [Doctoral dissertation]. Auburn University; 2012. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10415/2995.

Council of Science Editors:

Doukopoulos A. Characterization of New Populations in Sunn Hemp (Crotalaria juncea L.) and Relationship of Their Traits to Yield . [Doctoral Dissertation]. Auburn University; 2012. Available from: http://hdl.handle.net/10415/2995

University of Debrecen

16. FOUDA MANI, JUSTINE LILIANE. Analysis of the agricultural industry The case of Cameroon .

Degree: DE – ATC – Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar, 2013, University of Debrecen

URL: http://hdl.handle.net/2437/164682

► Agriculture can be definded as an art and a science which includes cultivating the soil at a large scale, brignig up both plants and animals… (more)

Subjects/Keywords: AGRICULTURE

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APA (6^th Edition):

FOUDA MANI, J. L. (2013). Analysis of the agricultural industry The case of Cameroon . (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/164682

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

FOUDA MANI, JUSTINE LILIANE. “Analysis of the agricultural industry The case of Cameroon .” 2013. Thesis, University of Debrecen. Accessed February 27, 2020. http://hdl.handle.net/2437/164682.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

FOUDA MANI, JUSTINE LILIANE. “Analysis of the agricultural industry The case of Cameroon .” 2013. Web. 27 Feb 2020.

Vancouver:

FOUDA MANI JL. Analysis of the agricultural industry The case of Cameroon . [Internet] [Thesis]. University of Debrecen; 2013. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/2437/164682.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

FOUDA MANI JL. Analysis of the agricultural industry The case of Cameroon . [Thesis]. University of Debrecen; 2013. Available from: http://hdl.handle.net/2437/164682

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

17. Strydom, Marline. The effect of different levels of supplementary feed on the production of finisher ostriches (Struthio camelus) grazing irrigated lucerne (Medicago sativa) pastures.

Degree: Animal Sciences, 2010, Stellenbosch University

URL: http://hdl.handle.net/10019.1/5234

►

Thesis (MScAgric (Animal Sciences)) – University of Stellenbosch, 2010.

ENGLISH ABSTRACT: The purpose of this study was to evaluate the production of slaughter ostriches in a… (more)

▼

Thesis (MScAgric (Animal Sciences)) – University of Stellenbosch, 2010.

ENGLISH ABSTRACT: The purpose of this study was to evaluate the production of slaughter ostriches in a grazing environment at different levels of supplementary feed. Two grazing trials were conducted. In the first trial, one group of finisher ostriches (six months old) was put into a feedlot and received a complete finisher diet. The other four groups were allowed to graze lucerne pasture (stocking rate of 15 birds/ha) with 1500, 1000, 500, and 0g supplementary feed/bird/day. Pasture production and intake were measured. There was no difference (P >0.05) between the end mean live weights of the feedlot ostriches and those two grazing groups receiving 1500 or 1000g supplementation. The average daily gain (ADG) of the group receiving 1000g supplementation was lower (P <0.05) than the ADG of the group receiving 1500g supplementation, but all three groups reached a mean target slaughter weight of 95kg within the 154 days of the study. Therefore, pastures together with the correct supplementation (at least 1000g/bird/day) can replace complete feeds in the finishing phase of slaughter ostriches and can play an important role in the production of these birds. For lucerne intake, a quadratic relationship (P <0.01) was found between pasture dry matter (DM) intake (g/bird/day) and supplementary feed intake (g/bird/day). The maximum lucerne intake level (1692.8g/bird/day) was achieved at 619.6g supplementary feed/bird/day. In the second grazing trial, finisher ostriches were allowed to graze lucerne pastures at two different stocking rates (10 and 15 birds/ha) while receiving either 0 or 800g supplementary feed/bird/day. Ostriches receiving supplementation had higher (P <0.05) mean end live weights than ostriches receiving no supplementation. Ostriches receiving supplementation reached a mean target slaughter weight of 95kg within the timespan of the trial, but ostriches receiving no supplementation did not. Stocking rate had no influence on mean end live weight of the birds. An interaction (P <0.05) was found between the level of supplementation and stocking rate for ADG of the birds. Stocking rate influenced ADG only for birds receiving no supplementation. As stocking rate increased, ADG of birds receiving no supplementation declined. Results of the pasture data indicated an increasing level of replacement of grazed lucerne DM by supplementary feed as the trial progressed and this was more pronounced at the higher stocking rate of 15 birds per hectare. A high stocking rate seems to have had a gradual depressing effect on lucerne DM production, while the less severe levels of defoliation at a lower stocking rate promoted lucerne DM production. A digestibility trial was conducted with mature ostriches (12 months old) to investigate the effect of supplementation on intake and digestibility of nutrients, as well as to investigate the substitution effect that ostriches may display when they receive supplementary feed in addition to…

Advisors/Committee Members: Brand, T. S., Van Heerden, J. M., Jordaan, J. W., University of Stellenbosch. Faculty of Agrisciences. Dept. of Animal Sciences..

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Strydom, M. (2010). The effect of different levels of supplementary feed on the production of finisher ostriches (Struthio camelus) grazing irrigated lucerne (Medicago sativa) pastures. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/5234

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Strydom, Marline. “The effect of different levels of supplementary feed on the production of finisher ostriches (Struthio camelus) grazing irrigated lucerne (Medicago sativa) pastures.” 2010. Thesis, Stellenbosch University. Accessed February 27, 2020. http://hdl.handle.net/10019.1/5234.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Strydom, Marline. “The effect of different levels of supplementary feed on the production of finisher ostriches (Struthio camelus) grazing irrigated lucerne (Medicago sativa) pastures.” 2010. Web. 27 Feb 2020.

Vancouver:

Strydom M. The effect of different levels of supplementary feed on the production of finisher ostriches (Struthio camelus) grazing irrigated lucerne (Medicago sativa) pastures. [Internet] [Thesis]. Stellenbosch University; 2010. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10019.1/5234.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Strydom M. The effect of different levels of supplementary feed on the production of finisher ostriches (Struthio camelus) grazing irrigated lucerne (Medicago sativa) pastures. [Thesis]. Stellenbosch University; 2010. Available from: http://hdl.handle.net/10019.1/5234

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

18. Raath, P. J. ( Pieter Johannes). Effect of varying levels of nitrogen, potassium and calcium nutrition on table grape vine physiology and berry quality.

Degree: Viticulture and Oenology, 2012, Stellenbosch University

URL: http://hdl.handle.net/10019.1/19996

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Thesis (PhD(Agric)) – Stellenbosch University, 2012.

ENGLISH ABSTRACT: A lack of defects is required for successful table grape marketing, which pre-suppose optimal vine performance, berry development… (more)

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Thesis (PhD(Agric)) – Stellenbosch University, 2012.

ENGLISH ABSTRACT: A lack of defects is required for successful table grape marketing, which pre-suppose optimal vine performance, berry development and post-harvest quality. The supply of mineral nutrients affects vine development, physiology and berry quality. Despite a vast amount of research conducted over decades, there remain many unresolved issues regarding table grape vine nutrition to ensure optimal table grape quality and shelve-life. Unjustified fertilisation practices often include excessive applications of nitrogen (N), potassium (K) and calcium (Ca). A four-year field trial was therefore conducted on a sandy soil in the Paarl district of South Africa, using grafted on Ramsey, and trained to a gable trellis system. Nitrogen, potassium and calcium were applied, singular or in combination, at rates up to 300% the calculated annual nutritional requirement. The effect of these excessive applications on table grape performance under typical South African cultivation conditions was investigated for Vitis vinifera L. cv. Prime Seedless, a very early seedless table cultivar that is produced with minimum berry diameter of 18mm, with special reference to 1) vegetative growth, 2) expression of grapevine nutrient availability through foliar analyses, 3) berry nutrient accumulation patterns of this early cultivar, 4) manipulation of berry nutrient content through soil and bunch directed applications and 5) the effect of berry nutrient content on its quality. No definite vegetative growth responses (expressed as shoot length, leaf surface area and shoot mass) and leaf chlorophyll content differences were obtained for all the treatments. These results were obtained in a vineyard on a sandy soil where excessive N fertilisation caused a reduction of soil pH to detrimentally low levels and where the excessive N, K and Ca applications reduced mutual concentrations and that of Mg, in the soil. A lack of stimulation in vegetative growth may therefore be ascribed to the combined negative effect of these excessive applications on soil pH and vine nutrition. Although the N content of petioles was higher for treatments where N was applied, consistent significant increases in petiole N with N fertilisation were not observed. Petiole N concentration showed a decreasing trend throughout the season. Petiole K concentrations were significantly increased by the K fertilisation at all phenological stages. None of the K fertilisation treatments, however, succeeded to raise petiole K concentrations above the accepted maximum norms and petiole K concentration at a specific sampling stage varied significantly between the four seasons. A general decrease in petiole K concentration was found for all seasons. Calcium fertilisation did not increase soil Ca content, resulting in a lack of differences in petiole Ca concentrations between treatments. An increase in petiole Ca concentration towards harvest was obtained. Correlations between petiole nutrient …

Advisors/Committee Members: Hunter, J. J., Conradie, W. J., Stellenbosch University. Faculty of AgriSciences. Dept. of Viticulture and Oenology..

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Raath, P. J. (. P. J. (2012). Effect of varying levels of nitrogen, potassium and calcium nutrition on table grape vine physiology and berry quality. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/19996

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Raath, P J ( Pieter Johannes). “Effect of varying levels of nitrogen, potassium and calcium nutrition on table grape vine physiology and berry quality.” 2012. Thesis, Stellenbosch University. Accessed February 27, 2020. http://hdl.handle.net/10019.1/19996.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Raath, P J ( Pieter Johannes). “Effect of varying levels of nitrogen, potassium and calcium nutrition on table grape vine physiology and berry quality.” 2012. Web. 27 Feb 2020.

Vancouver:

Raath PJ(PJ. Effect of varying levels of nitrogen, potassium and calcium nutrition on table grape vine physiology and berry quality. [Internet] [Thesis]. Stellenbosch University; 2012. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10019.1/19996.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Raath PJ(PJ. Effect of varying levels of nitrogen, potassium and calcium nutrition on table grape vine physiology and berry quality. [Thesis]. Stellenbosch University; 2012. Available from: http://hdl.handle.net/10019.1/19996

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

19. Brand, Zanell. Studies on embryonic development and hatchability of ostrich eggs.

Degree: Animal Sciences, 2012, Stellenbosch University

URL: http://hdl.handle.net/10019.1/20314

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Thesis (PhD(Agric)) – Stellenbosch University, 2012.

ENGLISH ABSTRACT: The ostrich industry experiences high rates of embryonic mortalities during artificial incubation of eggs. Studies have been carried… (more)

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Thesis (PhD(Agric)) – Stellenbosch University, 2012.

ENGLISH ABSTRACT: The ostrich industry experiences high rates of embryonic mortalities during artificial incubation of eggs. Studies have been carried out to investigate factors influencing hatchability, as well as determining genotypic effects for commercial production. Eggs from the combination of South African Black (SAB) male ostriches crossed with Zimbabwean Blue (ZB) female ostriches had embryonic losses of 45.7%. The embryonic mortality of eggs produced by pure bred SAB or ZB breeding birds subjected to pure breeding was similar at around 33 - 34%, but embryonic mortality was improved in eggs produced by ZB males and SAB female crosses (27%). Female age had a significant effect on the proportion of chicks pipped, as well as on early and late the embryonic mortalities. Chicks from eggs stored for intermediate periods, i.e. 3, 4 and 6 days prior to being set, were more likely to pip than chicks from those eggs set directly after collection without storage. Embryonic mortality was increased in eggs that were set directly (32.0%) or subjected to longer than 6 days of storage (43.5%). Chicks that pipped in the correct position had a higher probability of successfully hatching than those pipping in the incorrect position. Transfer of eggs between setters (i.e. disturbance of eggs) during incubation reduced the number of ostrich chicks pipping in the correct position. Incubated ostrich eggs with intermediate levels of water loss, i.e. between 9.0 and 19% of fresh egg weight, were more likely to pip in the correct position than those with higher or lower levels of water loss. Such eggs were also less likely to sustain early, late or overall embryonic mortalities. To optimise hatching success it is important to understand embryonic development. After 2 days of incubation the blastoderm area in eggs from the SAB x ZB crosses (104.5 mm) was lower (P < 0.05) compared to the pure SAB (141.0 mm), pure ZB (161.7 mm) and ZB x SAB crosses (166.1 mm). For embryos incubated for 7 to 42 days, both embryonic and leg growth during the 42 days of incubation was similar and approximately linear, more or less doubling in size up to 35 days of incubation. The embryo eye size increased more rapidly than beak length and reached full size of approximately 16.2 mm by 28 days of incubation, whereas the beak length continued to increase until the chick hatched at 42 days. Incubation position, vertical or horizontal, did not affect any of the measurements of the developing embryo throughout the 42-day incubation period. Air cell volume at 29 day of incubation for infertile eggs (19.3%) was significantly (P < 0.05) higher when compared to dead-in-shell eggs (14.3%) and eggs that hatched successfully (13.8%). Air cell volume was largely independent of strain (SAB or ZB) and whether chicks were assisted to hatch or not. After 41 days of incubation there was a significantly greater (P < 0.05) air cell volume in eggs that hatched normally compared to dead-in-shell eggs (28.3% vs. 21.7%,…

Advisors/Committee Members: Cloete, S. W. P., Malecki, I. A, Brown, C. R., Stellenbosch University. Faculty of AgriSciences. Dept. of Animal Sciences..

Subjects/Keywords: Agriculture

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Brand, Z. (2012). Studies on embryonic development and hatchability of ostrich eggs. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/20314

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Brand, Zanell. “Studies on embryonic development and hatchability of ostrich eggs.” 2012. Thesis, Stellenbosch University. Accessed February 27, 2020. http://hdl.handle.net/10019.1/20314.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Brand, Zanell. “Studies on embryonic development and hatchability of ostrich eggs.” 2012. Web. 27 Feb 2020.

Vancouver:

Brand Z. Studies on embryonic development and hatchability of ostrich eggs. [Internet] [Thesis]. Stellenbosch University; 2012. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10019.1/20314.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Brand Z. Studies on embryonic development and hatchability of ostrich eggs. [Thesis]. Stellenbosch University; 2012. Available from: http://hdl.handle.net/10019.1/20314

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

20. Gerber, Hein Jaco. Tree training and managing complexity and yield in fig (Ficus carica L.).

Degree: Horticulture, 2010, Stellenbosch University

URL: http://hdl.handle.net/10019.1/3184

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Thesis (MscAgric (Horticulture)) – University of Stellenbosch, 2010.

ENGLISH ABSTRACT: Commercial fig production with popular European cultivars, Bourjasotte Noire, Col de Damme Noire and Noire de… (more)

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Thesis (MscAgric (Horticulture)) – University of Stellenbosch, 2010.

ENGLISH ABSTRACT: Commercial fig production with popular European cultivars, Bourjasotte Noire, Col de Damme Noire and Noire de Caromb, is new to the Western Cape. Little research on fig production has been conducted in South Africa and producers are struggling to implement effective commercial practices. In order to establish practices that will maximise yield of quality fruit, the most productive one-year-old shoot lengths were identified in a phenological study. All shoot length categories evaluated in ‘Bourjasotte Noire’ (10 – 15 cm, 25 – 40 cm, 50 – 65 cm, 75+ cm) yielded fruit and will probably yield well the following season. In ‘Col de Damme Noire’, shoots longer than 60 cm seem to be suited to reproduction, yet they might produce a poor yield the following season. Shoots 10 – 20 cm long in ‘Noire de Caromb’ are productive relative to their length, while shoots 30 – 50 cm and 60 – 80 cm long are also fairly productive. Shoots longer than 100 cm produced suitable shoot lengths for yield the following season. Two experiments were conducted on ‘Bourjasotte Noire’ and ‘Col de Damme Noire’ to establish the type (Experiment 1, different intensity heading cuts) and timing (Experiment 2) of pruning cuts required to stimulate the growth of shoots of the same length as the shoots selected to be optimal for yield in the phenology study, and to reduce the expression of distal branching. In ‘Bourjasotte Noire’, removing one third of the total length of one-year-old shoots on 21 July by heading stimulated the development of more growth and longer current season shoots compared to other treatments, while reducing yield slightly. Heading back to three nodes in ‘Col de Damme Noire’ stimulated the growth of current season shoots of the optimal length established in the phenology study, while heading cuts on 30 June produced the longest average current season shoot length in ‘Col de Damme Noire’. To further address the effects of distal branching (acrotony), an experiment was conducted to establish whether rest breaking agents (RBA’s) in combination with tip-pruning can increase tree complexity by improving bud break, and whether increased complexity would increase yield in all three cultivars. A second experiment was conducted to evaluate the effects of timing RBA applications on bud break and harvest scheduling. Lift® increased the number of buds breaking in ‘Bourjasotte Noire’, while in ‘Noire de Caromb’ Dormex® and oil increased bud break. Tip-pruning increased the average shoot length in ‘Bourjasotte Noire’ and ‘Col de Damme Noire’, while causing a reduction in the amount of new growth in ‘Noire de Caromb’. Lift® applied 3 August and Dormex® applied 30 June shortened the number of days to 50% bud break in ‘Bourjasotte Noire’ and ‘Col de Damme Noire’. Both Lift® and Dormex® applied on 30 June decreased the number of days to 50% bud break and 50% harvest of the breba crop in ‘Noire de Caromb’. These treatments increased the number of fruit in both the…

Advisors/Committee Members: Theron, K. I., Steyn, W. J., University of Stellenbosch. Faculty of Agrisciences. Dept. of Horticulture..

Subjects/Keywords: Agriculture

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gerber, H. J. (2010). Tree training and managing complexity and yield in fig (Ficus carica L.). (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/3184

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gerber, Hein Jaco. “Tree training and managing complexity and yield in fig (Ficus carica L.).” 2010. Thesis, Stellenbosch University. Accessed February 27, 2020. http://hdl.handle.net/10019.1/3184.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gerber, Hein Jaco. “Tree training and managing complexity and yield in fig (Ficus carica L.).” 2010. Web. 27 Feb 2020.

Vancouver:

Gerber HJ. Tree training and managing complexity and yield in fig (Ficus carica L.). [Internet] [Thesis]. Stellenbosch University; 2010. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10019.1/3184.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gerber HJ. Tree training and managing complexity and yield in fig (Ficus carica L.). [Thesis]. Stellenbosch University; 2010. Available from: http://hdl.handle.net/10019.1/3184

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

21. Van der Westhuizen, Rykie Jacoba. Irrigation scheduling of tomatoes (Lycopersicon esculentum Mill.) and cucumbers (Cucumis sativus L.) grown hydroponically in coir.

Degree: Agronomy, 2009, Stellenbosch University

URL: http://hdl.handle.net/10019.1/1086

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Thesis (PhD(Agric) (Agronomy)) – University of Stellenbosch, 2009.

ENGLISH ABSTRACT: The use of capacitance water sensors for the scheduling of irrigation for hydroponic tomato and cucumber… (more)

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Thesis (PhD(Agric) (Agronomy)) – University of Stellenbosch, 2009.

ENGLISH ABSTRACT: The use of capacitance water sensors for the scheduling of irrigation for hydroponic tomato and cucumber crops grown in coir was investigated in a series of laboratory and glasshouse experiments in the Free State province of South Africa. Laboratory experiments in a climate controlled chamber were conducted to accurately calibrate ECH2O capacitance sensors, models EC-10 and EC-20, in coir with an improved calibration procedure. Water content predictions by the coir-specific calibration and manufacturer’s calibration equations were compared to actual water content measured from mass loss of the coir sample. The manufacturer’s calibration equation indicated a poor accuracy of prediction, which mostly underestimated the volumetric water content, compared to the near perfect prediction of the coir-specific calibration of individual sensors. A rapid calibration procedure for EC-10 and EC-20 sensors was proposed to reduce the calibration time of the sensors and promote their commercial use for irrigation management in coir. The accuracy of prediction by the rapid calibration procedure for the plant available water content range was high for both EC-10 and EC-20 sensors and allowed for the compensation for variation between sensors. Glasshouse studies aimed to characterise the water retention and ability of coir to supply water to greenhouse tomato and cucumber crops through the continuous monitoring of medium water content in small and large growing bags with the EC-10 and EC-20 capacitance sensors during a drying cycle, compared to well-watered plants. Stages of crop water stress were identified and, based only on the plant’s response to the drying cycle, it was suggested that water depletion can be allowed to the point of mild water stress for both greenhouse tomato and cucumber crops, which can be detected by soil water sensors. In a second series of glasshouse experiments, the identified stages of crop water stress were used to determine and apply depletion levels in coir and compare this irrigation strategy to a well-watered treatment for greenhouse cucumber and tomato plants, with regard to the water balance components, yield and water use efficiency for different bag sizes. Results indicated that irrigation was successfully managed to the pre-determined water depletion levels for cucumber and tomato plants in coir, through the use of in situ calibrated capacitance sensors. For both crops the depletion of water varied between bag sizes, indicating that various bag sizes require different irrigation management strategies. Scheduling to the highest pre-determined by 124 L m-2 in the small and 240 L m-2 in the large bags for cucumbers and 427 L m-2 in the small and 487 L m-2 in the large bags for tomato plants, compared to the well-watered treatments. Yields achieved by the greenhouse tomato plants in the large growing bags and cucumber plants in the small and large bags were maintained or improved when …

Advisors/Committee Members: Agenbag, G. A., Van Rensburg, L. D., Deckers, Ir. S., University of Stellenbosch. Faculty of Agrisciences. Dept. of Agronomy..

Subjects/Keywords: Agriculture

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Van der Westhuizen, R. J. (2009). Irrigation scheduling of tomatoes (Lycopersicon esculentum Mill.) and cucumbers (Cucumis sativus L.) grown hydroponically in coir. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/1086

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Van der Westhuizen, Rykie Jacoba. “Irrigation scheduling of tomatoes (Lycopersicon esculentum Mill.) and cucumbers (Cucumis sativus L.) grown hydroponically in coir.” 2009. Thesis, Stellenbosch University. Accessed February 27, 2020. http://hdl.handle.net/10019.1/1086.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Van der Westhuizen, Rykie Jacoba. “Irrigation scheduling of tomatoes (Lycopersicon esculentum Mill.) and cucumbers (Cucumis sativus L.) grown hydroponically in coir.” 2009. Web. 27 Feb 2020.

Vancouver:

Van der Westhuizen RJ. Irrigation scheduling of tomatoes (Lycopersicon esculentum Mill.) and cucumbers (Cucumis sativus L.) grown hydroponically in coir. [Internet] [Thesis]. Stellenbosch University; 2009. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10019.1/1086.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Van der Westhuizen RJ. Irrigation scheduling of tomatoes (Lycopersicon esculentum Mill.) and cucumbers (Cucumis sativus L.) grown hydroponically in coir. [Thesis]. Stellenbosch University; 2009. Available from: http://hdl.handle.net/10019.1/1086

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

22. Pienaar, Johanni. Fermentation, stability and degradability of whole-crop oat silage ensiled with a commercial inoculant.

Degree: Animal Sciences, 2010, Stellenbosch University

URL: http://hdl.handle.net/10019.1/4204

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Thesis (MScAgric (Animal Sciences)) – Stellenbosch University, 2010.

ENGLISH ABSTRACT: South Africa is well-known for periodic dry periods and uncertain rainfall. Ensiling of crops is a… (more)

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Thesis (MScAgric (Animal Sciences)) – Stellenbosch University, 2010.

ENGLISH ABSTRACT: South Africa is well-known for periodic dry periods and uncertain rainfall. Ensiling of crops is a method of preserving forage and ensures feed availability during periods when the supply of good quality forage is low. Cereal-based silages, especially in the Western Cape, South Africa, represent a significant proportion of feed consumed by ruminant animals, particularly high-producyion dairy cattle. However, farmers are still concerned about the technical challenges of ensiling cereal crops. Previous research done on lactic acid bacteria (LAB) inoculants used on cereal based silage has indicated a potential for improving silage fermentation, stability and degradability, thus enhancing feed conversion and production by ruminants. Two experiments were conducted to determine the effects of inoculating whole-crop oat silage with Lalsil® Cereal Lactobacilli (Lactobacillus buchneri (NCIMB 40788) and Pediococcus acidilactici (CNCM MA 18/5M)) LAB on (1) silage fermentation, (2) aerobic stability and (3) nutritional value of silage ensiled under a. micro-silos conditions and b. in a bunker under outdoor conditions of a Mediterranean summer. Oats (Avena sativa, cv SSH 405) were planted on 60 ha under dryland conditions at Elsenburg in the Western Cape province, South Africa. Whole-crop oats were harvested at the soft dough stage and length of the chopped material was 9 mm (Day of ensiling – Day 0). Chopped whole-crop oats were sampled, mixed thoroughly and divided into two portions. The Inoculant (Lalsil® Cereal) was applied to one portion to provide 5.79 x 109 colony forming units (CFU) of LAB per gram of fresh material. In the first experiment twenty - four glass silos (1.5 L glass jars) (WECK, GmbH u.Co., Wehr-Ofligen, W. Germany) were filled for each of the control and inoculant treatments. The glass silos were stored in a dark room in the laboratory at ambient temperature. Three glass silos were opened for each treatment on days 1, 2, 4, 8, 15, 30, 60 and 102 post-ensiling to determine fermentation dynamics. A parallel study was done with the same chopped whole-crop oats using the buried bag technique in a bunker silo. Whole-crop oats were ensiled in six net bags per treatment buried in a bunker filled with the same untreated whole crop oats. Bags, attached with nylon lines (3 m lengths) for easy retrieval were buried at 1m and 2 m depths in the same bunker. The net bags in the bunker were retrieved after 186 days of ensiling. Dry matter (DM), organic matter (OM), neutral detergent fibre (NDF), crude protein (CP), lactic acid levels, pH, water soluble carbohydrates (WSC) and in vitro organic matter degradability (IVOMD) for both studies were determined. Silage of both experiments was exposed to aerobic conditions for ten days to determine aerobic stability. It is concluded that the inoculant Lalsil® Cereal had the effect of reducing the rate of consumption of WSC during the anaerobic phase and…

Advisors/Committee Members: Cruywagen, C. W., Meeske, R., Stellenbosch University. Faculty of Agrisciences. Dept. of Animal Sciences..

Subjects/Keywords: Agriculture

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pienaar, J. (2010). Fermentation, stability and degradability of whole-crop oat silage ensiled with a commercial inoculant. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/4204

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pienaar, Johanni. “Fermentation, stability and degradability of whole-crop oat silage ensiled with a commercial inoculant.” 2010. Thesis, Stellenbosch University. Accessed February 27, 2020. http://hdl.handle.net/10019.1/4204.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pienaar, Johanni. “Fermentation, stability and degradability of whole-crop oat silage ensiled with a commercial inoculant.” 2010. Web. 27 Feb 2020.

Vancouver:

Pienaar J. Fermentation, stability and degradability of whole-crop oat silage ensiled with a commercial inoculant. [Internet] [Thesis]. Stellenbosch University; 2010. [cited 2020 Feb 27]. Available from: http://hdl.handle.net/10019.1/4204.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pienaar J. Fermentation, stability and degradability of whole-crop oat silage ensiled with a commercial inoculant. [Thesis]. Stellenbosch University; 2010. Available from: http://hdl.handle.net/10019.1/4204

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

23. Rice, Emily Margaret. SUPPLEMENTATION OF SODIUM BUTYRATE TO POST-WEANED HEIFER DIETS: EFFECTS ON GROWTH PERFORMANCE, NUTRIENT DIGESTIBILITY, AND HEALTH.

Degree: MS, 2017, University of New Hampshire

URL: https://scholars.unh.edu/thesis/1162

► The objective of this study was to determine the effect of varying levels of sodium, butyrate (SB) on the growth, digestibility, and health of post-weaned… (more)

▼ The objective of this study was to determine the effect of varying levels of sodium, butyrate (SB) on the growth, digestibility, and health of post-weaned heifers. Forty Holstein, dairy heifers with a mean age of 84 d and average body weight (BW) of 100.88 kg were housed, in a naturally ventilated freestall barn. Heifers were blocked by birth date and randomly assigned, to 1 of 4 treatments in a completely randomized block design: (1) 100 g of soybean meal carrier, (control; CON); (2) 0.25 g SB/kg of body weight + carrier (0.25SB); (3) 0.50 g SB/kg of BW +, carrier (0.50SB); (4) (0.75 g SB/kg of BW + carrier (0.75SB). Treatments were top-dressed and, hand-mixed into a total mixed ration (TMR) once daily. Heifers had free access to water. Initial, BW, hip and withers heights, heart girth and body length were measured before the start of the, study and every week thereafter until the 15 wk trial was over. Blood samples were obtained and, plasma urea nitrogen, glucose, and β-hydroxybutyrate (BHB) concentrations were determined, prior to the start of treatment and weekly after until the conclusion of the study. Fecal samples, were taken prior to treatment and every other week from each heifer for coccidia counts., Apparent total-tract nutrient digestibility was determined utilizing a chromium oxide marker., Each heifer underwent this phase at 47 d on study until 54 d on study. Sodium butyrate appeared, to increase the digestibility of acid detergent fiber (ADF) and organic matter (OM) (P = 0.08; P, = 0.07, respectively). Sodium butyrate had a positive effect on average BW and overall BW gain., Sodium butyrate had no performance effects on skeletal growth or blood metabolites. Average, daily gains were 1.16, 1.15, 1.17, and 1.24 kg/d (P = 0.12) and daily dry matter intakes (DMI), were 5.09, 4.84, 5.19, and 4.91 kg/d (P = 0.85) for CON, 0.25SB, 0.50SB, and 0.75SB,, respectively. There was a trend towards improved feed efficiency (FE). Fecal samples from each, heifer indicated the presence of coccidian, but the counts were variable within blocks and not, consistent across heifers within each pen. There was a trend towards positive feed efficiency., Sodium butyrate supplementation offers positive results in the growth performance and feed, efficiency of post-weaned heifers. Advisors/Committee Members: Peter S Erickson, Andre F Brito, William E Berndtson.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Rice, E. M. (2017). SUPPLEMENTATION OF SODIUM BUTYRATE TO POST-WEANED HEIFER DIETS: EFFECTS ON GROWTH PERFORMANCE, NUTRIENT DIGESTIBILITY, AND HEALTH. (Thesis). University of New Hampshire. Retrieved from https://scholars.unh.edu/thesis/1162

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rice, Emily Margaret. “SUPPLEMENTATION OF SODIUM BUTYRATE TO POST-WEANED HEIFER DIETS: EFFECTS ON GROWTH PERFORMANCE, NUTRIENT DIGESTIBILITY, AND HEALTH.” 2017. Thesis, University of New Hampshire. Accessed February 27, 2020. https://scholars.unh.edu/thesis/1162.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rice, Emily Margaret. “SUPPLEMENTATION OF SODIUM BUTYRATE TO POST-WEANED HEIFER DIETS: EFFECTS ON GROWTH PERFORMANCE, NUTRIENT DIGESTIBILITY, AND HEALTH.” 2017. Web. 27 Feb 2020.

Vancouver:

Rice EM. SUPPLEMENTATION OF SODIUM BUTYRATE TO POST-WEANED HEIFER DIETS: EFFECTS ON GROWTH PERFORMANCE, NUTRIENT DIGESTIBILITY, AND HEALTH. [Internet] [Thesis]. University of New Hampshire; 2017. [cited 2020 Feb 27]. Available from: https://scholars.unh.edu/thesis/1162.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rice EM. SUPPLEMENTATION OF SODIUM BUTYRATE TO POST-WEANED HEIFER DIETS: EFFECTS ON GROWTH PERFORMANCE, NUTRIENT DIGESTIBILITY, AND HEALTH. [Thesis]. University of New Hampshire; 2017. Available from: https://scholars.unh.edu/thesis/1162

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Tennessee – Knoxville

24. Richardson, Lauren Kathryn. Evaluation of agronomic, seed quality traits, and transcript abundance in conventional high oleic soybeans with mutant FAD2-1A and FAD2-1B genes.

Degree: MS, Plant Sciences, 2016, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_gradthes/3800

► Two soybean omega-6 fatty acid desaturase genes [FAD2-1A and FAD2- 1B] are responsible for converting oleic acid into linoleic acid (Okuley et al., 1994).… (more)

▼ Two soybean omega-6 fatty acid desaturase genes [FAD2-1A and FAD2- 1B] are responsible for converting oleic acid into linoleic acid (Okuley et al., 1994). Plant introductions [PI] 603452 and 283327 have naturally occurring mutations in FAD2-1A and FAD2-1B, respectively, which hinder the conversion of oleic acid to polyunsaturated fatty acids. The end result is more functional soybean oil with exceptionally high levels of oleic acid. The homozygous alleles of FAD2-1A and FAD2-1B were combined in a BC₃F_2:4 [backcross three, second filial generation selected, advanced to the fourth filial generation] population of forty-eight lines and were evaluated in Tennessee. Each line belonged to a double homozygous genotypic class: i) double wild-type [WT] (AABB), ii) mutant FAD2-1A with WT FAD2-1B (aaBB), iii) the converse (AAbb), and iv) double mutant (aabb). All genotypic groups yielded similarly to each other and to three high yielding checks (p<0.05). When one mutant allele was present the high oleic content was increased significantly (aaBB-34.4% and AAbb-26.2%) compared to AABB-21.3%. When both mutations were combined, aabb, the mean oleic content was significantly greater (p<0.05) than all other genotypic groups (80.4%). The range of oleic acid content across all twelve double mutant groups was 77.1% - 81.8%. It appears that the high oleic genotype has a significant effect on total oil, crude protein, and the concentration of five amino acids. The aabb group had significantly more oil (240 ± 1 g kg^-1) and crude protein (400 ± 7 g kg^-1) than all other groups. This increase in crude protein is consistent with the significantly lowered amino acid concentration (p<0.05) of lysine, methionine, tryptophan, and threonine in the aabb group. Conversely, the high oleic group had the greatest concentration of cysteine (p<0.05). It appears that mutant FAD2-1 genes from PI 603452 and PI 283327 are a useful source for developing high oleic soybean lines in Tennessee with no yield drag. It will be beneficial to explore the effect of these mutant alleles on total oil and protein in the future. Advisors/Committee Members: Vincent R. Pantalone, Hem Bhandari, Feng Chen, Tarek Hewezi.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Richardson, L. K. (2016). Evaluation of agronomic, seed quality traits, and transcript abundance in conventional high oleic soybeans with mutant FAD2-1A and FAD2-1B genes. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/3800

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Richardson, Lauren Kathryn. “Evaluation of agronomic, seed quality traits, and transcript abundance in conventional high oleic soybeans with mutant FAD2-1A and FAD2-1B genes.” 2016. Thesis, University of Tennessee – Knoxville. Accessed February 27, 2020. https://trace.tennessee.edu/utk_gradthes/3800.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Richardson, Lauren Kathryn. “Evaluation of agronomic, seed quality traits, and transcript abundance in conventional high oleic soybeans with mutant FAD2-1A and FAD2-1B genes.” 2016. Web. 27 Feb 2020.

Vancouver:

Richardson LK. Evaluation of agronomic, seed quality traits, and transcript abundance in conventional high oleic soybeans with mutant FAD2-1A and FAD2-1B genes. [Internet] [Thesis]. University of Tennessee – Knoxville; 2016. [cited 2020 Feb 27]. Available from: https://trace.tennessee.edu/utk_gradthes/3800.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Richardson LK. Evaluation of agronomic, seed quality traits, and transcript abundance in conventional high oleic soybeans with mutant FAD2-1A and FAD2-1B genes. [Thesis]. University of Tennessee – Knoxville; 2016. Available from: https://trace.tennessee.edu/utk_gradthes/3800

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Tennessee – Knoxville

25. Chu, Mingwei. Effect of Different Cover Crop Species on Crop Production and Soil Health.

Degree: MS, Environmental and Soil Sciences, 2017, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_gradthes/4917

► Integration of cover crops (CCs) can provide several benefits to row crop production systems. Comprehensive studies to understand the effectiveness of a mixture of… (more)

▼ Integration of cover crops (CCs) can provide several benefits to row crop production systems. Comprehensive studies to understand the effectiveness of a mixture of CCs versus single or double species CCs are limited. In this study, we evaluated the effect of single and double species CCs, and the soil health mix (SHM, a combination of five species recommended by the United States Department of Agriculture) on soil quality attributes and crop production in western Tennessee. The results showed an increase in soybean yield after 3-years of SHM treatment, which corresponded with significantly higher soil moisture content and soil inorganic nitrogen content compared to less diverse CC treatments and no-cover control. Overall the multi-species SHM showed potential for enhancing soil quality and crop yield. The Haney’s soil health test is a new approach to quantify the soil health status with heavy emphasis on soil biological properties. It introduced a new extractant for determining soil available nutrients, H3A; a new method of soil respiration measurement using Solvita gel system; and two new soil bioavailability parameters: water extractable organic carbon (WEOC) and water extractable organic nitrogen (WEON). The final Haney soil health score is calculated from the Solvita respiration, WEOC and WEON. In this study, components in Haney’s soil health test were evaluated to test their effectiveness in Tennessee soils. The H3A extractant showed significant but weak correlation with the traditional extractants such as Mehlich-1 and Mehlich-3. The Solvita test did not provide a reliable estimation of potential mineralizable nitrogen, however, it correlated with many soil properties including soil carbon and nitrogen pools as well as the WEOC and WEON. Although the soil health score showed some extent of sensitivity to long-term cover crop treatments, it did not capture the variation in soil health status after 4 years of cover cropping with different species of cover crops. This study is a first step towards simultaneous suitability evaluation of a suite of CCs for improving the sustainability of the agricultural belt of Tennessee. More similar studies are needed to help farmers make informed decisions of CC species selection for their cropping systems. Advisors/Committee Members: Forbes Walker, Sindhu Jagadamma, Neal S. Eash.

Subjects/Keywords: Agriculture

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chu, M. (2017). Effect of Different Cover Crop Species on Crop Production and Soil Health. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/4917

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chu, Mingwei. “Effect of Different Cover Crop Species on Crop Production and Soil Health.” 2017. Thesis, University of Tennessee – Knoxville. Accessed February 27, 2020. https://trace.tennessee.edu/utk_gradthes/4917.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chu, Mingwei. “Effect of Different Cover Crop Species on Crop Production and Soil Health.” 2017. Web. 27 Feb 2020.

Vancouver:

Chu M. Effect of Different Cover Crop Species on Crop Production and Soil Health. [Internet] [Thesis]. University of Tennessee – Knoxville; 2017. [cited 2020 Feb 27]. Available from: https://trace.tennessee.edu/utk_gradthes/4917.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chu M. Effect of Different Cover Crop Species on Crop Production and Soil Health. [Thesis]. University of Tennessee – Knoxville; 2017. Available from: https://trace.tennessee.edu/utk_gradthes/4917

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Tennessee – Knoxville

26. Lane, Jennifer Kay. Establishing a Fall Harvest Window for Switchgrass Biomass Based on Optimum Decline of Phosphorus and Potassium Levels in Shoots.

Degree: MS, Plant Sciences, 2011, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_gradthes/994

► Switchgrass (Panicum virgatum) is a perennial grass that remobilizes nutrients during senescence and is being used as biomass for cellulosic ethanol production. Phosphorus (P)… (more)

▼ Switchgrass (Panicum virgatum) is a perennial grass that remobilizes nutrients during senescence and is being used as biomass for cellulosic ethanol production. Phosphorus (P) and potassium (K) are removed in harvested biomass and replenished through additions of fertilizer. Identifying the appropriate harvest window in a one-cut system based on the remobilization of nutrients can be economically beneficial for biomass producers. The primary objective of this research was to determine if a one-cut harvest can be executed earlier in the fall based on the remobilization of P and K from stems and leaves to crown and roots of plants. Better harvesting conditions and reduced nutrient removal rates are potential benefits of earlier harvest. This project consisted of three parts, evaluating: (1) P and K levels in shoots and whole plants of Alamo and Kanlow cultivars, (2) P and K levels in shoots of upland and lowland switchgrass varieties, and (3) Effects of earlier harvest on yield. Twelve varieties, including ‘Alamo’ and ‘Kanlow’ cultivars, were planted in Knoxville, TN in 2007. Eight of these varieties were planted in Springfield, TN. Above and belowground samples were collected throughout the fall and analyzed for P and K concentrations. No significant declines of P and K were observed in stems and leaves from early October through November. Levels of P and K in leaves, stems, and panicles fluctuated during the fall season; however, final levels were similar in all tissues. Based on these changes in aboveground biomass, the harvest window could begin as early as mid-September. Data suggested that P and K in Alamo and Kanlow followed similar patterns through the fall, without significant declines in shoots. This is confirmed by data from whole plants, which showed no significant increases in P and K in crowns and roots. Levels of P and K in varieties of upland and lowland switchgrass did not differ and followed patterns observed in Alamo and Kanlow. Yields observed in different varieties did not decline when harvested as early as mid-September. Based solely on this study, it is not necessary to delay harvest and could take place as early as September. Advisors/Committee Members: Fred L. Allen, Carl E. Sams, Donald D. Tyler, William E. Hart, Jerome F. Grant.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Lane, J. K. (2011). Establishing a Fall Harvest Window for Switchgrass Biomass Based on Optimum Decline of Phosphorus and Potassium Levels in Shoots. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/994

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lane, Jennifer Kay. “Establishing a Fall Harvest Window for Switchgrass Biomass Based on Optimum Decline of Phosphorus and Potassium Levels in Shoots.” 2011. Thesis, University of Tennessee – Knoxville. Accessed February 27, 2020. https://trace.tennessee.edu/utk_gradthes/994.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lane, Jennifer Kay. “Establishing a Fall Harvest Window for Switchgrass Biomass Based on Optimum Decline of Phosphorus and Potassium Levels in Shoots.” 2011. Web. 27 Feb 2020.

Vancouver:

Lane JK. Establishing a Fall Harvest Window for Switchgrass Biomass Based on Optimum Decline of Phosphorus and Potassium Levels in Shoots. [Internet] [Thesis]. University of Tennessee – Knoxville; 2011. [cited 2020 Feb 27]. Available from: https://trace.tennessee.edu/utk_gradthes/994.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lane JK. Establishing a Fall Harvest Window for Switchgrass Biomass Based on Optimum Decline of Phosphorus and Potassium Levels in Shoots. [Thesis]. University of Tennessee – Knoxville; 2011. Available from: https://trace.tennessee.edu/utk_gradthes/994

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

27. Kochka, Matthew. STRAWBERRY PRODUCTION IN NEW HAMPSHIRE Strawberry root-lesion nematode, matted-row production, and annual plasticulture compared to matted-row production in New Hampshire.

Degree: MS, 2016, University of New Hampshire

URL: https://scholars.unh.edu/thesis/900

► The dominant strawberry production system in New Hampshire (NH) is the semi-perennial matted-row system. In this system, dormant crowns are planted in the spring… (more)

▼ The dominant strawberry production system in New Hampshire (NH) is the semi-perennial matted-row system. In this system, dormant crowns are planted in the spring and require a full year of maintenance before the first harvest. While as many two additional years of harvests can be realized in this system, strawberry root rot disease effectively limits the productive longevity of matted-row plantings in the state. Root-lesion nematode (Pratylenchus spp.) damage is often cited as a possible factor in facilitating the infection process of the causative pathogen complex of strawberry root rot; but no systematic survey for the presence of Pratylenchus spp. in NH strawberry fields has been undertaken. In the first chapter of this thesis, soil surveys reveal the presence of populations of both P. penetrans (a known pest in the region) and P. vulnus (a root-lesion nematode heretofore undocumented in the state) in strawberry plantings in NH. In the second chapter, five NH strawberry producers were surveyed in an effort to develop an enterprise budget for strawberry operations in the state. The study found that average yield, price paid for strawberry transplants, marketing outlet (u-pick or pre-picked berries), and number of harvest years all significantly affect profitability. Yields ranged widely from 2,750 - 9,000 pounds per bearing acre, with an average of 6,193 lbs/bearing ac (or 1,833 - 6,000 pounds per planted acre, with an average of 4,253 lbs/planted ac). The net return per planted acre ranged from 3,018 - 20,954 (average 10,586). This wide range in net return illustrates the need to investigate the effects of cultural decisions on overall economics. In the third chapter, an alternative production system known as annual plasticulture was evaluated for its potential to increase profitability for NH strawberry growers, relative to matted-row production. In all, two different annual plasticulture systems were evaluated alongside the matted-row system for material inputs, labor requirements, yields, and potential incomes over a period of two seasons. The study indicates that projected three-year average yields, net incomes, and expenses per harvest of both plasticulture systems compare favorably with those of the matted-row system. Specifically, average returns on expenses were estimated to be 205%, 646%, and 197% per year for the one-year June-bearing plasticulture system, the two-year everbearing plasticulture system, and the June-bearing matted-row system, respectively. Advisors/Committee Members: Iago Hale, Becky Sideman, Mike Sciabarrasi.

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Kochka, M. (2016). STRAWBERRY PRODUCTION IN NEW HAMPSHIRE Strawberry root-lesion nematode, matted-row production, and annual plasticulture compared to matted-row production in New Hampshire. (Thesis). University of New Hampshire. Retrieved from https://scholars.unh.edu/thesis/900

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kochka, Matthew. “STRAWBERRY PRODUCTION IN NEW HAMPSHIRE Strawberry root-lesion nematode, matted-row production, and annual plasticulture compared to matted-row production in New Hampshire.” 2016. Thesis, University of New Hampshire. Accessed February 27, 2020. https://scholars.unh.edu/thesis/900.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kochka, Matthew. “STRAWBERRY PRODUCTION IN NEW HAMPSHIRE Strawberry root-lesion nematode, matted-row production, and annual plasticulture compared to matted-row production in New Hampshire.” 2016. Web. 27 Feb 2020.

Vancouver:

Kochka M. STRAWBERRY PRODUCTION IN NEW HAMPSHIRE Strawberry root-lesion nematode, matted-row production, and annual plasticulture compared to matted-row production in New Hampshire. [Internet] [Thesis]. University of New Hampshire; 2016. [cited 2020 Feb 27]. Available from: https://scholars.unh.edu/thesis/900.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kochka M. STRAWBERRY PRODUCTION IN NEW HAMPSHIRE Strawberry root-lesion nematode, matted-row production, and annual plasticulture compared to matted-row production in New Hampshire. [Thesis]. University of New Hampshire; 2016. Available from: https://scholars.unh.edu/thesis/900

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Eaton, Connor. YEAR-ROUND MANAGEMENT OF HIGH TUNNEL PRODUCTION SYSTEMS: SPINACH AND TOMATO.

Degree: MS, 2016, University of New Hampshire

URL: https://scholars.unh.edu/thesis/1088

► As high tunnel production is relatively new to the Northeast, this research has helped understand knowledge-gaps in common warm and cold-season crop systems in… (more)

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Eaton, C. (2016). YEAR-ROUND MANAGEMENT OF HIGH TUNNEL PRODUCTION SYSTEMS: SPINACH AND TOMATO. (Thesis). University of New Hampshire. Retrieved from https://scholars.unh.edu/thesis/1088

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Eaton, Connor. “YEAR-ROUND MANAGEMENT OF HIGH TUNNEL PRODUCTION SYSTEMS: SPINACH AND TOMATO.” 2016. Thesis, University of New Hampshire. Accessed February 27, 2020. https://scholars.unh.edu/thesis/1088.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Eaton, Connor. “YEAR-ROUND MANAGEMENT OF HIGH TUNNEL PRODUCTION SYSTEMS: SPINACH AND TOMATO.” 2016. Web. 27 Feb 2020.

Vancouver:

Eaton C. YEAR-ROUND MANAGEMENT OF HIGH TUNNEL PRODUCTION SYSTEMS: SPINACH AND TOMATO. [Internet] [Thesis]. University of New Hampshire; 2016. [cited 2020 Feb 27]. Available from: https://scholars.unh.edu/thesis/1088.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Eaton C. YEAR-ROUND MANAGEMENT OF HIGH TUNNEL PRODUCTION SYSTEMS: SPINACH AND TOMATO. [Thesis]. University of New Hampshire; 2016. Available from: https://scholars.unh.edu/thesis/1088

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

29. Lamb, Alyssa. The Current Status and Control of Horseweed (Conyza canadensis) in Ohio Soybean (Glycine max) Production.

Degree: MS, Horticulture and Crop Science, 2018, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1523877602007281

► Studies were conducted from 2013 through 2017 with the objectives of: 1) optimizing a cereal rye cover crop program for the control of glyphosate-resistant (GR)… (more)

▼ Studies were conducted from 2013 through 2017 with the objectives of: 1) optimizing a cereal rye cover crop program for the control of glyphosate-resistant (GR) horseweed in soybean production; and 2) determining the frequency, infestation level, and distribution of some of the most common and troublesome weeds in Ohio soybean fields as well as the spatial and temporal distribution of horseweed populations.Two studies were conducted simultaneously from fall of 2016 to fall of 2017 to evaluate how the planting date and seeding rate of a cereal rye cover crop affect horseweed population density, and the utility of cereal rye to aid or replace control from spring preplant residual (Study I) or fall herbicides (Study II). There was no difference in horseweed population density as a result of rye planting date in either study. The rye seeding rate affected horseweed density throughout the season in both studies. Horseweed density was greater in the absence of rye compared to either seeding rate. In Study I, the flumioxazin + metribuzin spring preplant residual reduced horseweed density in June compared with no or low level residual. In July, the flumioxazin + metribuzin treatments had a reduced horseweed density compared to the nontreated, but the flumioxazin alone was not different than the mixture or nontreated. In Study II, the fall herbicide treatment reduced horseweed density until July compared with the absence of a fall treatment. These results suggest that cereal rye used as a cover crop before no-till soybeans can reduce GR horseweed plant density, but that fall herbicide treatments and comprehensive spring residual programs are still important to ensure effective GR horseweed control into the growing season.A survey was conducted annually from 2013 through 2017 in 49 to 52 counties in Ohio soybean fields to assess the frequency, infestation level, and distribution of horseweed, giant ragweed (Ambrosia trifida), common ragweed (Ambrosia artemisiifolia), and three Amaranthus or `pigweed’ species. Horseweed was the most frequently encountered species in all years, followed by giant ragweed, pigweeds, and common ragweed, respectively. Horseweed also had the greatest number of infestations (highest density) each year, followed by giant ragweed, common ragweed, and pigweed species, respectively. Spatial cores of interest, or counties identified as having significant levels of horseweed infestations or lack thereof, relative to surrounding counties, were identified in 2013, 2014, 2015 and 2016, but not 2017. However, the lowest total frequency of horseweed occurred in 2017, which coincided with second highest frequency of infestations among years. There was no distinct distribution or pattern of horseweed movement within the state from year to year, but there did seem to be an increase in counties with one to three infested fields over time compared to the early years of the survey where many counties had one or no infested fields. These results suggest that horseweed persists as a common and troublesome threat to Ohio… Advisors/Committee Members: Loux, Mark (Advisor).

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Lamb, A. (2018). The Current Status and Control of Horseweed (Conyza canadensis) in Ohio Soybean (Glycine max) Production. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1523877602007281

Chicago Manual of Style (16^th Edition):

Lamb, Alyssa. “The Current Status and Control of Horseweed (Conyza canadensis) in Ohio Soybean (Glycine max) Production.” 2018. Masters Thesis, The Ohio State University. Accessed February 27, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523877602007281.

MLA Handbook (7^th Edition):

Lamb, Alyssa. “The Current Status and Control of Horseweed (Conyza canadensis) in Ohio Soybean (Glycine max) Production.” 2018. Web. 27 Feb 2020.

Vancouver:

Lamb A. The Current Status and Control of Horseweed (Conyza canadensis) in Ohio Soybean (Glycine max) Production. [Internet] [Masters thesis]. The Ohio State University; 2018. [cited 2020 Feb 27]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1523877602007281.

Council of Science Editors:

Lamb A. The Current Status and Control of Horseweed (Conyza canadensis) in Ohio Soybean (Glycine max) Production. [Masters Thesis]. The Ohio State University; 2018. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1523877602007281

Iowa State University

30. Dagna, Nicolas. Application of soil test methods to study the availability of phosphorus in beef cattle manure.

Degree: 2012, Iowa State University

URL: https://lib.dr.iastate.edu/etd/12663

► Characterizing beef cattle (Bos taurus) manure P and its crop availability is essential to improve the utilization of this resource. The objectives of this study… (more)

Subjects/Keywords: Agriculture

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APA (6^th Edition):

Dagna, N. (2012). Application of soil test methods to study the availability of phosphorus in beef cattle manure. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/12663

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dagna, Nicolas. “Application of soil test methods to study the availability of phosphorus in beef cattle manure.” 2012. Thesis, Iowa State University. Accessed February 27, 2020. https://lib.dr.iastate.edu/etd/12663.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dagna, Nicolas. “Application of soil test methods to study the availability of phosphorus in beef cattle manure.” 2012. Web. 27 Feb 2020.

Vancouver:

Dagna N. Application of soil test methods to study the availability of phosphorus in beef cattle manure. [Internet] [Thesis]. Iowa State University; 2012. [cited 2020 Feb 27]. Available from: https://lib.dr.iastate.edu/etd/12663.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dagna N. Application of soil test methods to study the availability of phosphorus in beef cattle manure. [Thesis]. Iowa State University; 2012. Available from: https://lib.dr.iastate.edu/etd/12663

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations