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Louisiana State University
1.
Fontenot, Dexter Paul.
Assessment of bermudagrass (Cynodon dactylon) biotypes and bermudagrass interference with sugarcane (Saccharum spp. hybrids.
Degree: PhD, 2014, Louisiana State University
URL: etd-04042014-153331
;
https://digitalcommons.lsu.edu/gradschool_dissertations/2500 
► Bermudagrass (Cynodon dactylon L. Pers.) collected from 17 Louisiana sugarcane (Saccharum spp. hybrids) fields and two sites outside sugarcane-growing area was evaluated for genetic diversity,…
(more)
▼ Bermudagrass (Cynodon dactylon L. Pers.) collected from 17 Louisiana sugarcane (Saccharum spp. hybrids) fields and two sites outside sugarcane-growing area was evaluated for genetic diversity, growth characteristics and response to glyphosate. Random Amplified Polymorphic DNA (RAPD) genetic analysis and Jacard’s similarity coefficient, a dedrogram, based on unweighted pair group mean average (UPGMA) identified two cluster groups based on presence of common alleles. Bermudagrass considered most aggressive in establishment rate based on ground cover, plant height, and biomass production included the biotypes A (St. Martinville) and Q (Port Allen) in cluster A and R (St. Gabriel) in cluster B. Biotypes J (Samuels), N (New Iberia), and T (St. Joseph) considered least aggressive were included in cluster A. Rate of establishment for biotypes J, N, and T averaged 5.3 times slower and plant height was 61% less compared with A, Q, and R. Biomass production the first year averaged 7.8 times greater for biotypes A, Q, and R compared with J, N, and T. In greenhouse and field studies, bermudagrass biotypes A, C (Baldwin), and Q in cluster A were least sensitive to glyphosate and biotypes D (Centerville) and P (Patterson) in cluster B were most sensitive to glyphosate. In a competition study, pre-sprouted single node stem cuttings of ‘HoCP 96-540’ sugarcane were planted in 26.5 L pots with one, two, or four bermudagrass plants, sugarcane shoot weight 56 days after planting (DAP) was reduced on average 58%; two and four bermudagrass plants reduced sugarcane root weight on average 39%. In another study, two bermudagrass plants did not negatively affect shoot population 56 DAP for the cultivars HoCP 96-540, ‘L 97-128’, ‘L 99-226’, ‘HoCP 00-950’, ‘L 01-283’, and ‘L 03-371’. For L 97-128 and L 99-226, shoot weight averaged 1.7 to 3.0 times greater than the average of the other cultivars and root weight averaged 1.8 to 2.1 times greater than the average of the other cultivars. When the sugarcane cultivars were watered over a 42-day period with leachate collected from actively growing bermudagrass, sugarcane tiller height, tiller number, shoot weight, and root weight were not negatively affected.
Subjects/Keywords: biotype; bermudagrass; interference
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APA (6th Edition):
Fontenot, D. P. (2014). Assessment of bermudagrass (Cynodon dactylon) biotypes and bermudagrass interference with sugarcane (Saccharum spp. hybrids. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-04042014-153331 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2500
Chicago Manual of Style (16th Edition):
Fontenot, Dexter Paul. “Assessment of bermudagrass (Cynodon dactylon) biotypes and bermudagrass interference with sugarcane (Saccharum spp. hybrids.” 2014. Doctoral Dissertation, Louisiana State University. Accessed March 04, 2021.
etd-04042014-153331 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2500.
MLA Handbook (7th Edition):
Fontenot, Dexter Paul. “Assessment of bermudagrass (Cynodon dactylon) biotypes and bermudagrass interference with sugarcane (Saccharum spp. hybrids.” 2014. Web. 04 Mar 2021.
Vancouver:
Fontenot DP. Assessment of bermudagrass (Cynodon dactylon) biotypes and bermudagrass interference with sugarcane (Saccharum spp. hybrids. [Internet] [Doctoral dissertation]. Louisiana State University; 2014. [cited 2021 Mar 04].
Available from: etd-04042014-153331 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2500.
Council of Science Editors:
Fontenot DP. Assessment of bermudagrass (Cynodon dactylon) biotypes and bermudagrass interference with sugarcane (Saccharum spp. hybrids. [Doctoral Dissertation]. Louisiana State University; 2014. Available from: etd-04042014-153331 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2500
Louisiana State University
2.
Bhandari, Basu Deb.
Three Essays on Economic Analysis of Production Systems of U.S. Grass-fed Beef Industry.
Degree: PhD, Agricultural Economics, 2015, Louisiana State University
URL: etd-07082015-182940
;
https://digitalcommons.lsu.edu/gradschool_dissertations/2577
► This dissertation research consists of three essays. The first two studies analyze experimental research data based on three pasture systems for grass-fed beef (GFB) production…
(more)
▼ This dissertation research consists of three essays. The first two studies analyze experimental research data based on three pasture systems for grass-fed beef (GFB) production in the Gulf Coast Region. System 1 included bermudagrass and ryegrass; System 2 included bermudagrass, ryegrass, rye, dallisgrass, and clover mixtures (red, white, and berseem clovers); and System 3 included bermudagrass, soybean, sorghum sudan hybrid, ryegrass, rye, dallisgrass, and clover mixtures (red, white, and berseem clovers). Fifty-four Fall-born steers were weaned in May and grouped into nine groups and randomly blocked into treatments and replicates. Inputs and output data were recorded on a daily basis. Greenhouse gas (GHG) emissions in terms of CO2 equivalent emissions from each system were estimated based on the experimental data and literature for the first three years (2009/10 to 2011/12). For the first essay, the three pasture systems were analyzed to maximize the profitability and sustainability of grass-fed beef production. The simplest grazing system yielded higher profit than the most complex, but the most complex system produced the lowest greenhouse gas impact. A trade-off was found between profitability and GHG impact among the systems. In the second essay, the same three pasture systems were analyzed for labor use and profitability based on five years of experimental data (2009/10 to 2011/12). System 1 was more profitable as well as more labor consuming. Systems 1 and 2 were more profitable than System 3 with or without including the labor expenses. Application of simulation and dominance techniques showed that decision makers would choose between Systems 1 and 2 based on their risk preferences. The third essay analyzes the technical efficiency of grass-fed beef farms in the U.S. The study is based on a cost and return survey conducted in 2013. The average technical efficiency of grass-fed beef production was found to be 76%. Technical efficiency is positively affected by farm specialization, and percentage share of grass-fed beef meat in GFB income and negatively impacted by off-farm income and owning cow-calf segment. Increasing return to scale was found in GFB production and larger-scale farms were found to have lower average costs than smaller-scale farms.
Subjects/Keywords: bermudagrass; ryegrass; dallisgrass
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APA (6th Edition):
Bhandari, B. D. (2015). Three Essays on Economic Analysis of Production Systems of U.S. Grass-fed Beef Industry. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-07082015-182940 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2577
Chicago Manual of Style (16th Edition):
Bhandari, Basu Deb. “Three Essays on Economic Analysis of Production Systems of U.S. Grass-fed Beef Industry.” 2015. Doctoral Dissertation, Louisiana State University. Accessed March 04, 2021.
etd-07082015-182940 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2577.
MLA Handbook (7th Edition):
Bhandari, Basu Deb. “Three Essays on Economic Analysis of Production Systems of U.S. Grass-fed Beef Industry.” 2015. Web. 04 Mar 2021.
Vancouver:
Bhandari BD. Three Essays on Economic Analysis of Production Systems of U.S. Grass-fed Beef Industry. [Internet] [Doctoral dissertation]. Louisiana State University; 2015. [cited 2021 Mar 04].
Available from: etd-07082015-182940 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2577.
Council of Science Editors:
Bhandari BD. Three Essays on Economic Analysis of Production Systems of U.S. Grass-fed Beef Industry. [Doctoral Dissertation]. Louisiana State University; 2015. Available from: etd-07082015-182940 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2577
Texas A&M University
3.
Robinson, William Dustan.
Traffic tolerance and recovery of bermudagrass.
Degree: MS, Agronomy, 2005, Texas A&M University
URL: http://hdl.handle.net/1969.1/2287
► Bermudagrass is the predominant turfgrass used for athletic fields in the southern United States. Numerous bermudagrass cultivars are utilized for sports field use. Two frequent…
(more)
▼ Bermudagrass is the predominant turfgrass used for athletic fields in the southern
United States. Numerous
bermudagrass cultivars are utilized for sports field use. Two
frequent variations in management among facilities include mowing and nitrogen
fertility regimes. Research is needed to determine the influence of
bermudagrass
cultivar, mowing regime, and nitrogen fertility on traffic tolerance. Research conducted
at Texas A&M Univeristy studied the traffic tolerance of Tifsport, GN-1, Princess, and
NuMex Sahara bermudagrasses. These grasses were mowed once weekly at 3.80 cm
and three times weekly at 1.90 cm and fertilized with 146, 292, 585, or 1171 kg ha-1 yr-1.
Digital images were taken before and after simulated traffic to provide a quantitative
value for percent coverage. Images were analyzed for percent green canopy coverage
using Sigma Scan Pro. The number of green pixels was divided by the total image
pixels a yielding a percent coverage value. Shoot density, visual quality, tissue water
content, and tissue dry mass values were taken monthly. Percent tissue nitrogen was
taken for three months. Analysis of digital images revealed variability in traffic injury
tolerance between varieties. Tifsport, GN-1, and Princess maintained higher percent
coverage than NuMex Sahara. GN-1, Princess, and Tifsport were able to tolerate traffic
but did not maintain acceptable quality. Lower and more frequent mowing increased
shoot density and visual quality for all grasses. Increased nitrogen fertility levelsincreased tissue succulence and tissue dry mass but did not affect the traffic tolerance of
any variety. Increasing nitrogen fertility above 585 kg ha-1 yr-1 showed no benefit other
than increasing visual color. This research provides a guide for managers to make
informed decisions on cultivar selection and management practices under traffic
conditions.
Advisors/Committee Members: White, Richard H. (advisor), Hons, Frank M. (committee member), Krausz, Joseph P. (committee member).
Subjects/Keywords: Traffic; Bermudagrass
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APA (6th Edition):
Robinson, W. D. (2005). Traffic tolerance and recovery of bermudagrass. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/2287
Chicago Manual of Style (16th Edition):
Robinson, William Dustan. “Traffic tolerance and recovery of bermudagrass.” 2005. Masters Thesis, Texas A&M University. Accessed March 04, 2021.
http://hdl.handle.net/1969.1/2287.
MLA Handbook (7th Edition):
Robinson, William Dustan. “Traffic tolerance and recovery of bermudagrass.” 2005. Web. 04 Mar 2021.
Vancouver:
Robinson WD. Traffic tolerance and recovery of bermudagrass. [Internet] [Masters thesis]. Texas A&M University; 2005. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/1969.1/2287.
Council of Science Editors:
Robinson WD. Traffic tolerance and recovery of bermudagrass. [Masters Thesis]. Texas A&M University; 2005. Available from: http://hdl.handle.net/1969.1/2287
North Carolina State University
4.
Redding, Arthur Philip.
An Assessment of the Dilute Acid Pretreatment of Coastal Bermudagrass for Bioethanol Production.
Degree: MS, Biological and Agricultural Engineering, 2009, North Carolina State University
URL: http://www.lib.ncsu.edu/resolver/1840.16/1453
► There is a clear interest domestically to examine alternative liquid fuels which are more sustainable and environmentally friendly than gasoline. Bioethanol is a leading candidate…
(more)
▼ There is a clear interest domestically to examine alternative liquid fuels which are more sustainable and environmentally friendly than gasoline. Bioethanol is a leading candidate for this replacement, but limitations exist on current starch based production. As a result, lignocellulosics are being examined. Lignocellulosics require a pretreatment step to degrade the biomass enough to allow enzymes to access to the carbohydrates. Dilute acid pretreatment has been demonstrated across many lignocellulosic feedstocks as a leading method compared to other pretreatment options.
Coastal
bermudagrass was identified as a promising lignocellulosic feedstock for bioethanol production. It is well suited for the Southeastern United States where it is currently grown for nutrient management in concentrated animal farming operations and as a source of hay. In a full factorial experimental design, dilute sulfuric acid pretreatment was used to pretreat coastal
bermudagrass at 120, 140, 160, and 180ºC using 0.3, 0.6, 0.9, and 1.2% w/w sulfuric acid over residence times of 5, 15, 30, and 60 minutes. After enzymatic hydrolysis, the highest yield of total sugars (combined xylose and glucose) was 97%, which was shared by the pretreatment condition combinations of 0.9% acid at 160ºC for 15 minutes and 1.2% acid at 160ºC for 5 minutes. The prehydrolyzate liquor was analyzed for inhibitory compounds (furfural, hydroxymethylfurfural (HMF)) in order to assess potential risk for inhibition during fermentation. Accounting for the inhibitory compounds, a pretreatment with 1.2% acid at 140ºC for 30 minutes with a total sugar yield of 94% o r0.9% acid at 160 ºC for five minutes with a total sugar yield of 91% may be more favorable for fermentation because furfural levels remain under the inhibitory threshold concentration of 1 g/L. Additionally, due to significant interactions between factors, there are likely optimal pretreatment condition combinations possible other than those found experimentally.
Both kinetic and multiple linear regression (MLR) models have been developed in other studies to describe dilute acid pretreatment, however no study has yet applied an artificial neural network (ANN). In this study, the utility of an ANN was assessed for modeling the dilute acid pretreatment of coastal
bermudagrass using statistics that quantified the error between the predicted data and actual data and through a comparison with an MLR model. The statistics used were the coefficient of determination (R2), the root mean squared error (RMSE), and the root percent deviation (RPD). A standard 2nd-order polynomial multiple linear regression (MLR) model was developed for comparison with the ANN model. Time (minutes), acid concentration (% w/w), and temperature (ºC) were input into the models to generate xylose in the prehydrolyzate (PreH), glucose in the PreH, furfural in the PreH, HMF in the PreH, xylose in the enzymatic hydrolyzate (EH), and glucose in the EH. It was found that the two types of models…
Advisors/Committee Members: Steven W. Peretti, Committee Member (advisor), Ratna R. Sharma-Shivappa, Committee Member (advisor), Jay J. Cheng, Committee Chair (advisor).
Subjects/Keywords: Dilute Acid; Pretreatment; Bermudagrass; Ethanol
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APA (6th Edition):
Redding, A. P. (2009). An Assessment of the Dilute Acid Pretreatment of Coastal Bermudagrass for Bioethanol Production. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/1453
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Redding, Arthur Philip. “An Assessment of the Dilute Acid Pretreatment of Coastal Bermudagrass for Bioethanol Production.” 2009. Thesis, North Carolina State University. Accessed March 04, 2021.
http://www.lib.ncsu.edu/resolver/1840.16/1453.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Redding, Arthur Philip. “An Assessment of the Dilute Acid Pretreatment of Coastal Bermudagrass for Bioethanol Production.” 2009. Web. 04 Mar 2021.
Vancouver:
Redding AP. An Assessment of the Dilute Acid Pretreatment of Coastal Bermudagrass for Bioethanol Production. [Internet] [Thesis]. North Carolina State University; 2009. [cited 2021 Mar 04].
Available from: http://www.lib.ncsu.edu/resolver/1840.16/1453.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Redding AP. An Assessment of the Dilute Acid Pretreatment of Coastal Bermudagrass for Bioethanol Production. [Thesis]. North Carolina State University; 2009. Available from: http://www.lib.ncsu.edu/resolver/1840.16/1453
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Virginia Tech
5.
Ashley, James Elton Jr.
Evaluation of Weed Control and Crop Tolerance With Postemergence Herbicides in Sethoxydim-Tolerant Corn.
Degree: MS, Plant Pathology, Physiology, and Weed Science, 1998, Virginia Tech
URL: http://hdl.handle.net/10919/36737
► Field experiments were conducted in 1995, 1996, and 1997 at six locations to evaluate strategies for the use of sethoxydim-tolerant hybrids in Virginia corn production.…
(more)
▼ Field experiments were conducted in 1995, 1996, and 1997 at six locations to evaluate strategies for the use of sethoxydim-tolerant hybrids in Virginia corn production. The specific objectives of this research were to evaluate the effect of graminicides including clethodim, fluazifop-P, quizalofop-P, and sethoxydim, and method of application, on crop tolerance and
bermudagrass (Cynodon dactylon L.) control; to evaluate the effect of sethoxydim in combination with broadleaf herbicides on crop tolerance and
bermudagrass control; to evaluate sethoxydim-based herbicide programs for annual grass and broadleaf weed control; and to determine the response of sethoxydim-tolerant corn hybrids to these graminicides in the absence of the competitive effects of weeds. All experiments were conducted using a randomized complete block design with four replications. Individual plots consisted of 4 corn rows 7.6 meters in length in which the two inner rows received treatment and the two outer rows served as borders. All applications were made with a CO2-pressurized backpack sprayer delivering 210 L/ha of water at 220 kPa using flat fan spray tips. The dependent variables evaluated included crop response to herbicide treatments, weed control by species, and corn yield. All data were subjected to analysis of variance and appropriate mean separation techniques at the 0.05 significance level. Excellent
bermudagrass control was obtained from postemergence broadcast or postemergence directed applications of sethoxydim, fluazifop-P, quizalofop-P, clethodim, and fluazifop-P plus fenoxaprop. Broadcast applications of fluazifop-P and both broadcast and directed applications of clethodim caused significant crop injury, however. Combinations of sethoxydim with bentazon, bentazon plus atrazine, flumiclorac, and halosulfuron resulted in reduced
bermudagrass control relative to that control afforded by sethoxydim alone. In experiments to evaluate control of annual species including smooth pigweed (Amaranthus hybridus L.), common lambsquarters (Chenopodium album L.), giant foxtail (Setaria faberi Herrm.), ivyleaf morningglory (Ipomoea hederaceae L. Jacq.), jimsonweed (Datura stramonium L.), large crabgrass (Digitaria sanguinalis L. Scop.), and a perennial, yellow nutsedge (Cyperus esculentus L.), excellent broad spectrum control was achieved with sethoxydim in combination with bentazon, bentazon plus atrazine, nicosulfuron, or primisulfuron. Crop tolerance to these treatments was excellent. In experiments to evaluate sethoxydim-tolerant hybrids and susceptibility to graminicides, no rate of sethoxydim caused significant injury to any hybrid tested. Tolerance of these hybrids to a 1X rate of quizalofop-P was also demonstrated, although 4X and 8X rates of fluazifop-P and quizalofop-P caused significant injury. Clethodim at all rates of application caused significant crop injury. Differential responses to graminicides among hybrids were noted.
Advisors/Committee Members: Hagood, Edward Scott Jr. (committeechair), Alley, Marcus M. (committee member), Wilson, Henry P. (committee member).
Subjects/Keywords: Bermudagrass; corn
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APA (6th Edition):
Ashley, J. E. J. (1998). Evaluation of Weed Control and Crop Tolerance With Postemergence Herbicides in Sethoxydim-Tolerant Corn. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/36737
Chicago Manual of Style (16th Edition):
Ashley, James Elton Jr. “Evaluation of Weed Control and Crop Tolerance With Postemergence Herbicides in Sethoxydim-Tolerant Corn.” 1998. Masters Thesis, Virginia Tech. Accessed March 04, 2021.
http://hdl.handle.net/10919/36737.
MLA Handbook (7th Edition):
Ashley, James Elton Jr. “Evaluation of Weed Control and Crop Tolerance With Postemergence Herbicides in Sethoxydim-Tolerant Corn.” 1998. Web. 04 Mar 2021.
Vancouver:
Ashley JEJ. Evaluation of Weed Control and Crop Tolerance With Postemergence Herbicides in Sethoxydim-Tolerant Corn. [Internet] [Masters thesis]. Virginia Tech; 1998. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10919/36737.
Council of Science Editors:
Ashley JEJ. Evaluation of Weed Control and Crop Tolerance With Postemergence Herbicides in Sethoxydim-Tolerant Corn. [Masters Thesis]. Virginia Tech; 1998. Available from: http://hdl.handle.net/10919/36737
Oklahoma State University
6.
Bryant-Schlobohm, Ryan.
Breeding and genetic characterization of forage bermudagrass for the transition zone of the United States.
Degree: Crop Science, 2020, Oklahoma State University
URL: http://hdl.handle.net/11244/325489
► Bermudagrass is a robust forage option for livestock producers as both a grazed and stockpiled herbage. Breeding efforts focused on improved cold tolerance have expanded…
(more)
▼ Bermudagrass is a robust forage option for livestock producers as both a grazed and stockpiled herbage. Breeding efforts focused on improved cold tolerance have expanded the geographic range of
bermudagrass into the transition zone of the United States. However, many cold tolerant clonal hybrids experience a gap in yield potential and quality compared to southern adapted cultivars. Additionally, producers experience a limited option of seeded commercial cultivars that have the necessary adaptation for production within the transition zone. This study was conducted to genetically characterize collections of germplasm for the improvement of forage
bermudagrass in the transition zone of the United States. A collection of 215 Cynodon dactylon SSR markers were identified as transferable to C. nlemfuensis, with confirmed effectiveness through a genetic diversity analysis. Transferable markers were used to identify interspecific hybrids from a cross between P3 1x7 and Tifton 68 that employed to develop a population with improved cold tolerance, yield potential, and forage quality in Stillwater and Perkins, OK. Population evaluations of 100 seeded genotypes were conducted in Goodwell, OK to characterize the genetic variation of biomass and reproductive traits, in addition to identifying elite germplasm for synthetic seeded cultivar development. Furthermore, a collection of 31 commercial cultivars and experimental accessions were characterized with SSR markers for molecular genetic diversity. Ten seeded genotypes and 25 interspecific hybrids were selected for further testing. Several trait associations were identified for indirect selection of seed and biomass yield. Furthermore, broad sense heritability estimates of interspecific hybrids displayed a significant genetic influence to adaptive trait performance. Molecular characterization confirmed a relatively narrow genetic base within current commercial cultivars. The genetic information, selections and SSR markers developed in the investigation will further enhance the capabilities of forage
bermudagrass breeding, as we seek to broaden the genetic base and improve key traits for transition zone performance.
Advisors/Committee Members: Wu, Yanqi (advisor), Anderson, Michael (committee member), Rocateli, Alex (committee member), Reuter, Ryan (committee member).
Subjects/Keywords: bermudagrass; genetics; plant breeding
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APA (6th Edition):
Bryant-Schlobohm, R. (2020). Breeding and genetic characterization of forage bermudagrass for the transition zone of the United States. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/325489
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bryant-Schlobohm, Ryan. “Breeding and genetic characterization of forage bermudagrass for the transition zone of the United States.” 2020. Thesis, Oklahoma State University. Accessed March 04, 2021.
http://hdl.handle.net/11244/325489.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bryant-Schlobohm, Ryan. “Breeding and genetic characterization of forage bermudagrass for the transition zone of the United States.” 2020. Web. 04 Mar 2021.
Vancouver:
Bryant-Schlobohm R. Breeding and genetic characterization of forage bermudagrass for the transition zone of the United States. [Internet] [Thesis]. Oklahoma State University; 2020. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/11244/325489.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bryant-Schlobohm R. Breeding and genetic characterization of forage bermudagrass for the transition zone of the United States. [Thesis]. Oklahoma State University; 2020. Available from: http://hdl.handle.net/11244/325489
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oklahoma State University
7.
Liu, Yichen.
Testing and Selecting Drought Resistant Common Bermudagrass Genotypes.
Degree: Horticulture, 2013, Oklahoma State University
URL: http://hdl.handle.net/11244/14977
► Bermudagrass (Cynodon dactylon (L.) Pers.) is a perennial warm-season turfgrass that is widely used in the central and southern part of the United States. The…
(more)
▼ Bermudagrass (Cynodon dactylon (L.) Pers.) is a perennial warm-season turfgrass that is widely used in the central and southern part of the United States. The drought performance of 67 experimental selections made from the normally seed-propagated cultivars 'Yukon', 'Riviera' and ' OKS 2004-2'
bermudagrass, with two cultivars `Celebration' and `Premier' serving as standards. Field research plots were established at the Oklahoma State University Turfgrass Research Center in Stillwater, OK in 2012 in a randomized complete block design with four replications. Plots were evaluated in the field during and following a one month drought treatment period in 2012 and 2013. Plots received no water from irrigation or natural rainfall during the treatment period. Right after the drought period, plots were irrigated to allow grass recovery and the recovery rate was measured. Parameters measured included turf quality, leaf firing, normalized difference vegetation index, soil volumetric water content, and digital image analysis. Based on data collected in 2012 and 2013, two experimental genotypes, `1x9' and `20x7', showed significant improvement in field drought performance compared to all other entries and performed better than the highly drought resistant standard Celebration.
Advisors/Committee Members: Moss, Justin Quetone (advisor), Martin, Dennis L. (committee member), Bell, Gregory E. (committee member), Wu, Yanqi (committee member).
Subjects/Keywords: bermudagrass; drought resistant; turfgrass
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APA (6th Edition):
Liu, Y. (2013). Testing and Selecting Drought Resistant Common Bermudagrass Genotypes. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/14977
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Liu, Yichen. “Testing and Selecting Drought Resistant Common Bermudagrass Genotypes.” 2013. Thesis, Oklahoma State University. Accessed March 04, 2021.
http://hdl.handle.net/11244/14977.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Liu, Yichen. “Testing and Selecting Drought Resistant Common Bermudagrass Genotypes.” 2013. Web. 04 Mar 2021.
Vancouver:
Liu Y. Testing and Selecting Drought Resistant Common Bermudagrass Genotypes. [Internet] [Thesis]. Oklahoma State University; 2013. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/11244/14977.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Liu Y. Testing and Selecting Drought Resistant Common Bermudagrass Genotypes. [Thesis]. Oklahoma State University; 2013. Available from: http://hdl.handle.net/11244/14977
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Mississippi State University
8.
Begitschke, Erick G.
Effects of preemergence herbicides on hybrid bermudagrass root growth, establishment, and sod harvestability.
Degree: MS, Plant and Soil Sciences, 2017, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10192017-095620/
;
► Preemergence herbicides are generally considered as a group to negatively affect hybrid bermudagrass (Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy) establishment. However, little…
(more)
▼ Preemergence herbicides are generally considered as a group to negatively affect hybrid
bermudagrass (Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy) establishment. However, little is known about the effects upon hybrid
bermudagrass root growth, establishment, and sod harvestability. Several research projects were conducted at Mississippi State University to determine the effects of commonly used preemergence herbicides on hybrid
bermudagrass sod production. Measured response variables included visually estimated hybrid
bermudagrass cover, normalized difference vegetative index (NDVI), ratio vegetative index (RVI), relative chlorophyll concentration (CI-RE), sod tensile strength, root mass, root length, root surface area, average root diameter, and root carbohydrate concentration after application of these herbicides. While several of these preemergence herbicides initially reduced hybrid
bermudagrass growth, hybrid
bermudagrass was generally able to recover and outgrow the herbicidal effects by the end of the growing season.
Advisors/Committee Members: T. Casey Barickman (committee member), Te-Ming (Paul) Tseng (committee member), Barry Stewart (committee member), Jay McCurdy (chair).
Subjects/Keywords: sod; herbicides; preemergence; turfgrass; hybrid bermudagrass
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APA (6th Edition):
Begitschke, E. G. (2017). Effects of preemergence herbicides on hybrid bermudagrass root growth, establishment, and sod harvestability. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-10192017-095620/ ;
Chicago Manual of Style (16th Edition):
Begitschke, Erick G. “Effects of preemergence herbicides on hybrid bermudagrass root growth, establishment, and sod harvestability.” 2017. Masters Thesis, Mississippi State University. Accessed March 04, 2021.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-10192017-095620/ ;.
MLA Handbook (7th Edition):
Begitschke, Erick G. “Effects of preemergence herbicides on hybrid bermudagrass root growth, establishment, and sod harvestability.” 2017. Web. 04 Mar 2021.
Vancouver:
Begitschke EG. Effects of preemergence herbicides on hybrid bermudagrass root growth, establishment, and sod harvestability. [Internet] [Masters thesis]. Mississippi State University; 2017. [cited 2021 Mar 04].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10192017-095620/ ;.
Council of Science Editors:
Begitschke EG. Effects of preemergence herbicides on hybrid bermudagrass root growth, establishment, and sod harvestability. [Masters Thesis]. Mississippi State University; 2017. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10192017-095620/ ;
Clemson University
9.
Young, Kaylin.
Methane Prediction by Nutrient Profiles in Ruminal Continuous Cultures Fed an All Forage Diet of Bermudagrass or Annual Ryegrass.
Degree: MS, Animal and Veterinary Sciences, 2013, Clemson University
URL: https://tigerprints.clemson.edu/all_theses/1829
► Extensive research has been done on the effect of diet on rumen methane (CH4) production, and on developing equations to accurately predict CH4 in…
(more)
▼ Extensive research has been done on the effect of diet on rumen methane (CH4) production, and on developing equations to accurately predict CH4 in cattle. However, the majority of this research has been gathered from feedlot cattle or cattle fed a total mixed ration (TMR). To date, no studies have examined nutrient correlations with CH4 when feeding an all pasture diet of warm season or cool season grasses. This study included two in vitro experiments, one with a warm season forage and one with a cool season forage to see which nutrient characteristics of each forage best correlated with CH4 production. Rumen microorganisms from a lactating Holstein cow were incubated in dual-flow ruminal continuous cultures for 7 days and thirty g of either Tifton 85
bermudagrass in experiment 1 or Marshall Annual Ryegrass in experiment 2 at 5 different days regrowth (14 d, 21 d, 28 d, 35 d, and 42 d) were fed twice daily in equal amounts. Methane concentrations were measured hourly to determine differences in CH4 production with time, forage species and regrowth. In experiment 1, feeding
bermudagrass at 28 d regrowth resulted in CH4 production (32.13 mmol/d) which was higher than all others except for 35 d. The three nutrients included in the forward regression, were starch, sugar, and acid detergent lignin (ADL). In experiment 2, feeding annual ryegrass at 21 d regrowth produced the highest amount of CH4 (17.21 mmol/d) compared to all other days regrowth. The three nutrients included in the forward regression were starch, ADL, and hemicellulose (HC). For both experiments, measured values were lower than predicted ones from equations. These experiments conclude that starch is the strongest predictor of CH4 in grazed forages but other predictors may vary based on grass type.
Advisors/Committee Members: Andrae, John G, Stringer, William C, Jenkins, Thomas C.
Subjects/Keywords: annual ryegrass; bermudagrass; cattle; methane; Animal Sciences
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APA (6th Edition):
Young, K. (2013). Methane Prediction by Nutrient Profiles in Ruminal Continuous Cultures Fed an All Forage Diet of Bermudagrass or Annual Ryegrass. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/1829
Chicago Manual of Style (16th Edition):
Young, Kaylin. “Methane Prediction by Nutrient Profiles in Ruminal Continuous Cultures Fed an All Forage Diet of Bermudagrass or Annual Ryegrass.” 2013. Masters Thesis, Clemson University. Accessed March 04, 2021.
https://tigerprints.clemson.edu/all_theses/1829.
MLA Handbook (7th Edition):
Young, Kaylin. “Methane Prediction by Nutrient Profiles in Ruminal Continuous Cultures Fed an All Forage Diet of Bermudagrass or Annual Ryegrass.” 2013. Web. 04 Mar 2021.
Vancouver:
Young K. Methane Prediction by Nutrient Profiles in Ruminal Continuous Cultures Fed an All Forage Diet of Bermudagrass or Annual Ryegrass. [Internet] [Masters thesis]. Clemson University; 2013. [cited 2021 Mar 04].
Available from: https://tigerprints.clemson.edu/all_theses/1829.
Council of Science Editors:
Young K. Methane Prediction by Nutrient Profiles in Ruminal Continuous Cultures Fed an All Forage Diet of Bermudagrass or Annual Ryegrass. [Masters Thesis]. Clemson University; 2013. Available from: https://tigerprints.clemson.edu/all_theses/1829
University of Arkansas
10.
Deboer, Eric.
Using Covers and Wetting Agents to Prevent Winter Injury of Ultradwarf Bermudagrass.
Degree: MS, 2018, University of Arkansas
URL: https://scholarworks.uark.edu/etd/2634
► As ultradwarf bermudagrass (Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy) putting green use in the United States moves further north, there is risk…
(more)
▼ As ultradwarf
bermudagrass (Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy) putting green use in the United States moves further north, there is risk of sustaining winter injury from low-temperature exposure and tissue desiccation. Protective covers reduce low-temperature exposure on ultradwarf
bermudagrass greens. Desiccation of turf can be caused by hydrophobic soils. Wetting agents are applied to actively growing ultradwarf
bermudagrass greens to relieve symptoms of hydrophobic soils. Less is known about the effects late-fall wetting agent applications on dormant
bermudagrass putting greens. This research aims to define a predicted low-temperature threshold for covering ultradwarf
bermudagrass greens and to quantify the effects of a late-fall wetting agent application on winter survival of ultradwarf
bermudagrass. A protective cover and wetting agent trial was conducted on a sand-based putting green with plots of ‘Champion’, ‘MiniVerde’, and ‘TifEagle’ ultradwarf
bermudagrass during the winters if 2015-2016 and 2016-2017. Cover treatments were placed at forecasted low-temperature thresholds of -9.4, -7.8, -5.6, and -4.0 °C and were compared to an uncovered control. A single late-fall wetting agent application was applied to each cultivar x cover treatment. An additional wetting agent trial was conducted by comparing a single application of various wetting agent treatments to an untreated control on a sand-based ultradwarf
bermudagrass putting green. Spring green-up was monitored by quantifying green turfgrass coverage through digital image analysis. Soil volumetric water content was monitored at a depth of 3.8 cm using time-domain reflectometry. The wetting agent trial included two water drop penetration tests during each season. In both seasons, reducing the cover temperature threshold resulted in significant differences in green turfgrass coverage between treatments, but lower cover temperatures did not delay green-up of turf. ‘MiniVerde’ and ‘TifEagle’ greened up significantly faster compared to ‘Champion’. In 2016, wetting agent treatments greened up significantly faster than the untreated control. Multiple wetting agent treatments significantly reduced water drop penetration times in the top three cm of the soil profile. Our research demonstrates the potential to reduce the forecasted low-temperature for covering ultradwarf
bermudagrass without negatively impacting turf health, potentially reducing golf course winter labor costs.
Advisors/Committee Members: Michael Richardson, Douglas Karcher, Kristofor Brye.
Subjects/Keywords: Bermudagrass; Golf; Putting Green; Turfgrass; Horticulture
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Manager
APA (6th Edition):
Deboer, E. (2018). Using Covers and Wetting Agents to Prevent Winter Injury of Ultradwarf Bermudagrass. (Masters Thesis). University of Arkansas. Retrieved from https://scholarworks.uark.edu/etd/2634
Chicago Manual of Style (16th Edition):
Deboer, Eric. “Using Covers and Wetting Agents to Prevent Winter Injury of Ultradwarf Bermudagrass.” 2018. Masters Thesis, University of Arkansas. Accessed March 04, 2021.
https://scholarworks.uark.edu/etd/2634.
MLA Handbook (7th Edition):
Deboer, Eric. “Using Covers and Wetting Agents to Prevent Winter Injury of Ultradwarf Bermudagrass.” 2018. Web. 04 Mar 2021.
Vancouver:
Deboer E. Using Covers and Wetting Agents to Prevent Winter Injury of Ultradwarf Bermudagrass. [Internet] [Masters thesis]. University of Arkansas; 2018. [cited 2021 Mar 04].
Available from: https://scholarworks.uark.edu/etd/2634.
Council of Science Editors:
Deboer E. Using Covers and Wetting Agents to Prevent Winter Injury of Ultradwarf Bermudagrass. [Masters Thesis]. University of Arkansas; 2018. Available from: https://scholarworks.uark.edu/etd/2634
University of Tennessee – Knoxville
11.
da Silva, Marcia Pereira.
Forage mass, nutritive value and persistence of alfalfa and alfalfa mixtures as influenced by forage management.
Degree: MS, Plant Sciences, 2018, University of Tennessee – Knoxville
URL: https://trace.tennessee.edu/utk_gradthes/5374
► The utilization of alfalfa (<i>Medicago sativa</i>) alone or in mixtures with tall fescue (<i>Lolium arundinaceum</i> (Schreb.) Darbyish) or bermudagrass (<i>Cynodon dactylon</i> (L.) Pers) in the…
(more)
▼ The utilization of alfalfa (<i>Medicago sativa</i>) alone or in mixtures with tall fescue (<i>Lolium arundinaceum</i> (Schreb.) Darbyish) or
bermudagrass (<i>Cynodon dactylon</i> (L.) Pers) in the Southeast U.S. must be assessed so better management recommendations can be given. The objective of this first study was to determine the cumulative capacity of alfalfa in monoculture (A) and mixtures with tall fescue (ATF) and
bermudagrass (AB), and its indirect improvements on the nutritive (NV). Three species combinations were utilized (A, ATF and AB) and subjected to four harvest frequencies (21, 28, 35 and 42 days) throughout the 2016 and 2017 growing seasons at The University of Tennessee Plateau Research and Education Center (PREC) in Crossville, TN. Samples were collected for analysis of NV and forage mass (FM). Results indicated that on spring of 2016 and 2017, A and ATF showed highest FM values (<i>P</i> < 0.0001). In summer 2016, A and AB had higher FM than ATF (<i>P</i> < 0.0001), however, in summer of 2017 no differences were observed. The NV increased once alfalfa was incorporated into the mixtures, with higher crude protein (CP) and lower neutral detergent fiber (NDF). In conclusion, harvest frequencies above 28 days are recommended for optimum FM accumulation. Yet, harvest frequencies of 42 days tend to have increased lignification thus decreased NV. The second experiment asses the persistence of the same experiment on the third year. Based on FM, results showed that persistence of A (<i>P</i> = 0.0042), AB (<i>P</i> = 0.0002), and ATF (<i>P</i> = 0.0007) decreased at the third year of growth, and different harvest schedules should be followed for each species combination for increased persistence in the field. For A and AB, harvest frequencies should be 35 days and for ATF, 42 days.
Advisors/Committee Members: Renata N. Oakes, Gary Bates, Augustin Rius, Carl Sams.
Subjects/Keywords: alfalfa; bermudagrass; tall fescue; mixtures; southeast; persistence
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APA (6th Edition):
da Silva, M. P. (2018). Forage mass, nutritive value and persistence of alfalfa and alfalfa mixtures as influenced by forage management. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/5374
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
da Silva, Marcia Pereira. “Forage mass, nutritive value and persistence of alfalfa and alfalfa mixtures as influenced by forage management.” 2018. Thesis, University of Tennessee – Knoxville. Accessed March 04, 2021.
https://trace.tennessee.edu/utk_gradthes/5374.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
da Silva, Marcia Pereira. “Forage mass, nutritive value and persistence of alfalfa and alfalfa mixtures as influenced by forage management.” 2018. Web. 04 Mar 2021.
Vancouver:
da Silva MP. Forage mass, nutritive value and persistence of alfalfa and alfalfa mixtures as influenced by forage management. [Internet] [Thesis]. University of Tennessee – Knoxville; 2018. [cited 2021 Mar 04].
Available from: https://trace.tennessee.edu/utk_gradthes/5374.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
da Silva MP. Forage mass, nutritive value and persistence of alfalfa and alfalfa mixtures as influenced by forage management. [Thesis]. University of Tennessee – Knoxville; 2018. Available from: https://trace.tennessee.edu/utk_gradthes/5374
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Tennessee – Knoxville
12.
Carter, Timothy Donald.
Irrigation Plus Nitrogen Rate Effects on Hybrid Bermudagrass Hay Yield and Quality, With Preliminary Evaluation of NDVI, Tissue, and Soil Nitrate-N Sampling as Diagnostic Tools.
Degree: MS, Biosystems Engineering Technology, 2011, University of Tennessee – Knoxville
URL: https://trace.tennessee.edu/utk_gradthes/861
► A nitrogen fertility study with Vaughn’s hybrid bermudagrass conducted on a Crider silt loam soil (fine, silty, mixed, active, mesic Typic Paleudalfs) over three…
(more)
▼ A nitrogen fertility study with Vaughn’s hybrid
bermudagrass conducted on a Crider silt loam soil (fine, silty, mixed, active, mesic Typic Paleudalfs) over three (3) years (2008-2011) at the Highland Rim Research and Education Center near Springfield, Tennessee is evaluated in this manuscript. Nitrogen applications are evaluated in both irrigated and non-irrigated plots at five (5) different application rates: 0, 56, 112, 168, and 224 kg N ha
-1. These rates are applied beginning in late April, and three (3) additional times upon harvests occurring in June, July, and August. Irrigation plots receive enough water to bring total weekly water up to 2.24 cm/plot whenever rainfall is less than that amount. Normalized difference vegetative index (NDVI) measurements are collected mid harvest and on harvest dates to investigate new nitrogen status indicators between Vaughn’s hybrid
bermudagrass yields. Plant tissue samples are collected at harvest. Soil samples are collected mid harvest to investigate soil nitrate nitrogen and its relationship with
bermudagrass yields.
The results of the study show irrigation has no effect on yields during the period of this study. There is a significant effect resulting from the interaction between month and nitrogen application on yield. Investigation of this interaction reveals two (2) distinct periods of production potential during the growing season. A low to medium yielding period produces an average harvest yield maximum of 3.14 Mg ha
-1. A medium to high yield period produces an average harvest yield maximum of 5.4 Mg ha
-1. Based on an analysis of variance and mean separation, a nitrogen rate of 56 kg N ha
-1 rate is recommended for harvests occurring during the low to medium yielding period, and a nitrogen rate of 113 kg N ha
-1 is recommended for those occurring during the high to medium yielding period. NDVI is highly correlated with yield on date of harvest. The results also show NDVI is correlated with mid-harvest yields also, which suggests a possible development of using NDVI as a mid harvest nitrogen status indicator. The results show soil nitrate is not correlated with yield, but did indicate accumulation in the soil as the growing season progressed.
Advisors/Committee Members: Hubert J. Savoy, Brian Leib, John Wilkerson, Joann Logan.
Subjects/Keywords: hybrid; bermudagrass; NDVI; soil nitrate; Irrigation; Agriculture
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APA (6th Edition):
Carter, T. D. (2011). Irrigation Plus Nitrogen Rate Effects on Hybrid Bermudagrass Hay Yield and Quality, With Preliminary Evaluation of NDVI, Tissue, and Soil Nitrate-N Sampling as Diagnostic Tools. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/861
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Carter, Timothy Donald. “Irrigation Plus Nitrogen Rate Effects on Hybrid Bermudagrass Hay Yield and Quality, With Preliminary Evaluation of NDVI, Tissue, and Soil Nitrate-N Sampling as Diagnostic Tools.” 2011. Thesis, University of Tennessee – Knoxville. Accessed March 04, 2021.
https://trace.tennessee.edu/utk_gradthes/861.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Carter, Timothy Donald. “Irrigation Plus Nitrogen Rate Effects on Hybrid Bermudagrass Hay Yield and Quality, With Preliminary Evaluation of NDVI, Tissue, and Soil Nitrate-N Sampling as Diagnostic Tools.” 2011. Web. 04 Mar 2021.
Vancouver:
Carter TD. Irrigation Plus Nitrogen Rate Effects on Hybrid Bermudagrass Hay Yield and Quality, With Preliminary Evaluation of NDVI, Tissue, and Soil Nitrate-N Sampling as Diagnostic Tools. [Internet] [Thesis]. University of Tennessee – Knoxville; 2011. [cited 2021 Mar 04].
Available from: https://trace.tennessee.edu/utk_gradthes/861.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Carter TD. Irrigation Plus Nitrogen Rate Effects on Hybrid Bermudagrass Hay Yield and Quality, With Preliminary Evaluation of NDVI, Tissue, and Soil Nitrate-N Sampling as Diagnostic Tools. [Thesis]. University of Tennessee – Knoxville; 2011. Available from: https://trace.tennessee.edu/utk_gradthes/861
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Tennessee – Knoxville
13.
Dickson, Kyley Hampton.
Evaluation of Crumb Rubber Dynamics for Improving Athletic Field Quality.
Degree: MS, Plant Sciences, 2014, University of Tennessee – Knoxville
URL: https://trace.tennessee.edu/utk_gradthes/2707
► Crumb rubber (CR) is an amendment used to reduce surface hardness and increase wear-tolerance on athletic fields. Turf managers can topdress CR particles into…
(more)
▼ Crumb rubber (CR) is an amendment used to reduce surface hardness and increase wear-tolerance on athletic fields. Turf managers can topdress CR particles into highly trafficked portions of athletic fields; however, optimum particle size and topdressing depth combinations for use on
bermudagrass (
Cynodon spp) athletic fields have not been determined. Optimum CR particle size and depth to maximize performance of hybrid
bermudagrass (
C. dactylon (L.) Pers. x
C. transvaalensis Burtt-Davy, 'Tifway') athletic field turf established on a Sequatchie silt loam soil was investigated at the University of Tennessee Center for Athletic Field Safety (Knoxville, TN) in 2011 and 2012. The experimental design was a randomized complete block with four replications. Treatments included five CR particle sizes (30, 20, 10:14, 14:30, and 8:20 mesh size, respectively) and three topdressing depths (0.6, 1.3 and 1.9 cm, respectively). The coefficient of uniformity for each particle size tested was 1.83 (30 mesh), 2.28 (20 mesh), 1.82 (10:14 mesh), 1.38 (14:30 mesh), and 1.79 (8:2 mesh), respectively. All plots were subjected to 25 simulated traffic events with the Cady traffic simulator. In 2011, significantly greater green turfgrass cover was retained in 1.3 and 1.9 cm depths than the control. Surface hardness was significantly lower on 1.3 and 1.9 cm depth plots, whereas, particle size had no significant effect on surface hardness. However, no differences were observed in 2012. Our findings indicate that CR topdressing depth is more important than CR particle size in optimizing performance of hybrid
bermudagrass athletic fields under simulated traffic.
Advisors/Committee Members: John C. Sorochan, Jim T. Brosnan, John C. Stier.
Subjects/Keywords: Crumb rubber; bermudagrass; Other Plant Sciences
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Manager
APA (6th Edition):
Dickson, K. H. (2014). Evaluation of Crumb Rubber Dynamics for Improving Athletic Field Quality. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/2707
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Dickson, Kyley Hampton. “Evaluation of Crumb Rubber Dynamics for Improving Athletic Field Quality.” 2014. Thesis, University of Tennessee – Knoxville. Accessed March 04, 2021.
https://trace.tennessee.edu/utk_gradthes/2707.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Dickson, Kyley Hampton. “Evaluation of Crumb Rubber Dynamics for Improving Athletic Field Quality.” 2014. Web. 04 Mar 2021.
Vancouver:
Dickson KH. Evaluation of Crumb Rubber Dynamics for Improving Athletic Field Quality. [Internet] [Thesis]. University of Tennessee – Knoxville; 2014. [cited 2021 Mar 04].
Available from: https://trace.tennessee.edu/utk_gradthes/2707.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Dickson KH. Evaluation of Crumb Rubber Dynamics for Improving Athletic Field Quality. [Thesis]. University of Tennessee – Knoxville; 2014. Available from: https://trace.tennessee.edu/utk_gradthes/2707
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Georgia
14.
Grimshaw, Austin Lee.
ACCase herbicide resistance in bermudagrass.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/29052
► Bermudagrass (Cynodon dactylon (L.) Pers.) is a widely used turfgrass in home lawns, golf courses, and athletic fields. The turf industry faces challenges regarding the…
(more)
▼ Bermudagrass (Cynodon dactylon (L.) Pers.) is a widely used turfgrass in home lawns, golf courses, and athletic fields. The turf industry faces challenges regarding the issues of environmental impact and increasing expense of turf
management. Fertilizer and herbicide application has been linked with non-point pollution of fresh water systems. Creating new turf cultivars with potential to reduce environmental impacts is critical for continued success of the industry. Herbicide
resistant bermudagrass cultivars are a way to modernize the turf industry, making management more cost efficient for operators. Studies were performed to identify and attempt to create ACCase herbicide resistant bermudagrass cultivars. A possible
herbicide tolerant genotype (93-175) exhibited less injury to ACCase herbicide applications. Also, a lysimeter study was completed to analyze fertilizer leaching characteristics of several fertilizers and determined an experimental fertilizer (E 15-0-0)
had a greater potential to leach nitrogen than two other commonly used fertilizers.
Subjects/Keywords: Bermudagrass; ACCase; Sethoxydim; Clethodim; Fluazifop; Resistance
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Manager
APA (6th Edition):
Grimshaw, A. L. (2014). ACCase herbicide resistance in bermudagrass. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/29052
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Grimshaw, Austin Lee. “ACCase herbicide resistance in bermudagrass.” 2014. Thesis, University of Georgia. Accessed March 04, 2021.
http://hdl.handle.net/10724/29052.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Grimshaw, Austin Lee. “ACCase herbicide resistance in bermudagrass.” 2014. Web. 04 Mar 2021.
Vancouver:
Grimshaw AL. ACCase herbicide resistance in bermudagrass. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10724/29052.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Grimshaw AL. ACCase herbicide resistance in bermudagrass. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/29052
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oklahoma State University
15.
Tan, Chengcheng.
Development of Simple Sequence Repeat Markers, Fertility Study and Seed Yield Heritability Estimates in Bermudagrass.
Degree: Plant & Soil Science, 2013, Oklahoma State University
URL: http://hdl.handle.net/11244/15142
► The objectives of this study were to: develop and characterize genomic simple sequence repeat (SSR) markers in C. transvaalensis from its four SSR libraries enriched…
(more)
▼ The objectives of this study were to: develop and characterize genomic simple sequence repeat (SSR) markers in C. transvaalensis from its four SSR libraries enriched with [CA]n, [GA]n, [AAG]n, and [AAT]n; study selfing and outcrossing fertility in C. dactylon var. dactylon under open-pollinating conditions using SSR markers; and estimate heritability for seed yield and its two components, inflorescence prolificacy and seed set percentage in C. dactylon var. dactylon. There were 981 unique SSR markers developed and effective with reliable amplifications of targeted bands in C. transvaalensis donor DNA. Up to 93% of the 981 markers were polymorphic in eight C. transvaalensis plants and 544 markers were effective in all genotypes. A set of 917 markers amplified heritable alleles examined with six F1 progeny of African
bermudagrass parents `T577' x `Uganda'. In the fertility study, 25 clonal common
bermudagrass plants were planted in a randomized complete block design with 3 replications at Perkins and Stillwater, OK. DNA samples were isolated from 1439 progeny germinated from open-pollinated seed of 25 seed parents. After comparing the progeny alleles to those of their respective maternal parents using 11 selected SSR markers, only two progeny were identified to be selfed, indicating an extremely high outcrossing rate of 99.86% in common
bermudagrass under open-pollinating field conditions. The field trials were also used to collect data of seed yield, inflorescence prolificacy and seed set percentage in both 2012 and 2013. Half-sib families differed for all three traits, indicating the presence of additive gene action. Family � location effects were observed for seed set and seed yield. All three traits showed family � year interaction effects, while a significant family � location � year interaction existed in the two components. Narrow-sense heritability estimates (0.18 and 0.26-0.68) for seed yield, respectively based on variance component analysis and parent-offspring regressions, indicated a complex genetics of seed yield. Heritability estimates were moderate to relatively high for inflorescence prolificacy (0.30-0.55) and seed set (0.41-0.78). The results indicated that genetic improvement could be achieved if phenotypic selection is applied for seed yield components and conventional genotypic evaluation is needed for seed yield increase.
Advisors/Committee Members: Wu, Yanqi (advisor), Taliaferro, Charles (committee member), Bell, Gregory E. (committee member), Smith, Michael (committee member), Martin, Dennis (committee member).
Subjects/Keywords: bermudagrass; fertility; heritability; seed yield; ssr markers
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APA (6th Edition):
Tan, C. (2013). Development of Simple Sequence Repeat Markers, Fertility Study and Seed Yield Heritability Estimates in Bermudagrass. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/15142
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tan, Chengcheng. “Development of Simple Sequence Repeat Markers, Fertility Study and Seed Yield Heritability Estimates in Bermudagrass.” 2013. Thesis, Oklahoma State University. Accessed March 04, 2021.
http://hdl.handle.net/11244/15142.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tan, Chengcheng. “Development of Simple Sequence Repeat Markers, Fertility Study and Seed Yield Heritability Estimates in Bermudagrass.” 2013. Web. 04 Mar 2021.
Vancouver:
Tan C. Development of Simple Sequence Repeat Markers, Fertility Study and Seed Yield Heritability Estimates in Bermudagrass. [Internet] [Thesis]. Oklahoma State University; 2013. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/11244/15142.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tan C. Development of Simple Sequence Repeat Markers, Fertility Study and Seed Yield Heritability Estimates in Bermudagrass. [Thesis]. Oklahoma State University; 2013. Available from: http://hdl.handle.net/11244/15142
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oklahoma State University
16.
Tian, Yang.
Organic acid changes in bermudagrass root exudates under aluminum stress.
Degree: Horticulture and Landscape Architecture Department, 2011, Oklahoma State University
URL: http://hdl.handle.net/11244/9595
► Root exudates can act as root zone chelators to reduce harmful effects when plants are under heavy metal stress. Aluminum toxicity in acidic soils is…
(more)
▼ Root exudates can act as root zone chelators to reduce harmful effects when plants are under heavy metal stress. Aluminum toxicity in acidic soils is a common problem in bermudagrass areas across the United States. Therefore, a controlled environment study was developed to evaluate organic acid changes of `Princess-77'. Aluminum (AlK(SO4)2 12H2O) treatments were applied at 100 ppm and 200 ppm to bermudagrass growing in a 4.5 pH sand profile. Treatments also included a 4.5 pH treatment with no Al and a 7.0 pH control with no Al. Each treatment was replicated three times in a randomized complete block design. Five organic acids (oxalate, citrate, malate, malonate, and succinate) were found in bermudagrass root tissues. Citric and malic acid were the dominant acids compared to oxalic acid. Oxalic acid only accounted for 11 % of the total organic acid concentration in root tissues compared that in root exudate samples (63 %), which may indicate the specific response of oxalic acid to external Al stress. Al was accumulated in shoot tissues at concentrations of 1214.41 mg/kg and 2261.13 mg/kg dry wt. under 100 ppm and 200 ppm Al treatment respectively. There was a significant (P = 0.01) negative linear relationship (r2 = 0.61) between Al leaf accumulation and bermudagrass root mass where root mass decreased significantly (P < 0.05) as Al accumulation increased. Citric, malic, oxalic, and succinic acid were found in bermudagrass root exudates. Oxalic acid was the dominant acid accounting for 51-81 % of total organic acids and the exudation rate had a significant (P = 0.01) positive linear relationship (r2 = 0.78) with external Al concentrations. Citric acid was induced by Al stress and higher exudation rate was detected in 100 ppm Al stress, the average exudation rate of malic acid also increased under Al treatment compared to the control treatments. The results indicated potential Al tolerance mechanisms presented in bermudagrass cultivar `Princess-77'.
Subjects/Keywords: aluminum stress; bermudagrass; organic acid; root exudate
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APA (6th Edition):
Tian, Y. (2011). Organic acid changes in bermudagrass root exudates under aluminum stress. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/9595
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tian, Yang. “Organic acid changes in bermudagrass root exudates under aluminum stress.” 2011. Thesis, Oklahoma State University. Accessed March 04, 2021.
http://hdl.handle.net/11244/9595.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tian, Yang. “Organic acid changes in bermudagrass root exudates under aluminum stress.” 2011. Web. 04 Mar 2021.
Vancouver:
Tian Y. Organic acid changes in bermudagrass root exudates under aluminum stress. [Internet] [Thesis]. Oklahoma State University; 2011. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/11244/9595.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tian Y. Organic acid changes in bermudagrass root exudates under aluminum stress. [Thesis]. Oklahoma State University; 2011. Available from: http://hdl.handle.net/11244/9595
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Georgia
17.
Corriher, Vanessa Ann.
Cow and calf grazing performance on Coastal and Tifton 85 pastures with creep grazing and steer performance on Coastal, Russell and Tifton 85 bermudagrass hays.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/23339
► Beef cow and calf performance was determined prior to weaning in 2-yr grazing experiment using replicated Coastal (C) or Tifton 85 (T85) bermudagrass (Cynodon dactylon)pastures…
(more)
▼ Beef cow and calf performance was determined prior to weaning in 2-yr grazing experiment using replicated Coastal (C) or Tifton 85 (T85) bermudagrass (Cynodon dactylon)pastures without or with Aeschynomene americana L. creep grazing. The
91-d calf average daily gain (ADG) was 19% higher for calves grazing T85, and 9.4% higher for calves allowed to creepgraze. Higher calf gains on T85, and on creep grazed aeschynomene, could significantly increase producer returns. Steer performance and
in situ digestion of Coastal, Russell (R), and Tifton 85bermudagrass hays were determined in a 40-d dry lot experiment. Hays were fed with supplement, and steer ADG and hay dry matter intake was higher on C than R or T85 (0.90, 5.4vs 0.58, 4.0 and 0.55,
4.1 kg). Hay samples incubated in ruminally cannulated steers over 72 h,had similar chemical composition and digestibility. Tifton 85 hay or pasture can improve performance of growing beef cattle.
Subjects/Keywords: Creep grazing; Bermudagrass; Forage; Aeschynomene; Calf gain; Bermudagrass hay; In situ; Steer
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APA (6th Edition):
Corriher, V. A. (2014). Cow and calf grazing performance on Coastal and Tifton 85 pastures with creep grazing and steer performance on Coastal, Russell and Tifton 85 bermudagrass hays. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/23339
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Corriher, Vanessa Ann. “Cow and calf grazing performance on Coastal and Tifton 85 pastures with creep grazing and steer performance on Coastal, Russell and Tifton 85 bermudagrass hays.” 2014. Thesis, University of Georgia. Accessed March 04, 2021.
http://hdl.handle.net/10724/23339.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Corriher, Vanessa Ann. “Cow and calf grazing performance on Coastal and Tifton 85 pastures with creep grazing and steer performance on Coastal, Russell and Tifton 85 bermudagrass hays.” 2014. Web. 04 Mar 2021.
Vancouver:
Corriher VA. Cow and calf grazing performance on Coastal and Tifton 85 pastures with creep grazing and steer performance on Coastal, Russell and Tifton 85 bermudagrass hays. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10724/23339.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Corriher VA. Cow and calf grazing performance on Coastal and Tifton 85 pastures with creep grazing and steer performance on Coastal, Russell and Tifton 85 bermudagrass hays. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/23339
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Georgia
18.
Baxter, Lisa Leanne.
Bermudagrass stem maggot.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/30294
► The bermudagrass stem maggot (BSM; Atherigona reversura Villeneuve) has infested and damaged bermudagrass [Cynodon dactylon (L.) Pers.] hayfields throughout the southeastern United States. Eight Cynodon…
(more)
▼ The bermudagrass stem maggot (BSM; Atherigona reversura Villeneuve) has infested and damaged bermudagrass [Cynodon dactylon (L.) Pers.] hayfields throughout the southeastern United States. Eight Cynodon cultivars were tested and it was
determined that the number and percent of tillers damaged depends on cultivar, but an average 7.7% decrease in total dry biomass was observed for all cultivars. Unfortunately, there is no information available on the reproductive potential of the BSM.
Adult flies dissected from various regions in Georgia and Florida demonstrated that the reproductive morphology resembled A. soccata and the total number of ovarioles varied with region. To provide information on morphological differences among Cynodon
cultivars, eight characteristics were compared, and it was concluded that C. dactylon have denser, lighter green, finer-textured canopies while C. nlemfuensis Vanderyst had less leaf density, were darker green, and more robust. Cultivar tolerance appears
to be the best IPM strategy to implement for BSM control.
Subjects/Keywords: Bermudagrass; Cynodon; Bermudagrass Stem Maggot; BSM; Atherigona reversura; cultivar differences; ovariole number
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APA (6th Edition):
Baxter, L. L. (2014). Bermudagrass stem maggot. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/30294
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Baxter, Lisa Leanne. “Bermudagrass stem maggot.” 2014. Thesis, University of Georgia. Accessed March 04, 2021.
http://hdl.handle.net/10724/30294.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Baxter, Lisa Leanne. “Bermudagrass stem maggot.” 2014. Web. 04 Mar 2021.
Vancouver:
Baxter LL. Bermudagrass stem maggot. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10724/30294.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Baxter LL. Bermudagrass stem maggot. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/30294
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
19.
Hargey, Daniel Francis.
Establishment and Management of Turfgrass Under Municipal Water Restrictions.
Degree: MS, Agronomy, 2015, Texas A&M University
URL: http://hdl.handle.net/1969.1/156210
► Drought has become and continues to be a major concern throughout many areas of the United States. To better manage water supplies, municipalities are constantly…
(more)
▼ Drought has become and continues to be a major concern throughout many areas of the United States. To better manage water supplies, municipalities are constantly in search of ways to conserve and ration water. In this process, they must identify the areas of importance to continue to allocate sufficient water and others in which to make reductions. Home lawns and turfgrass in general have been viewed as luxuries rather than necessities, and therefore lawns and turfgrass are the first areas to experience watering reductions. These come in the form of municipal water restrictions in which, depending on the severity of the drought, will limit the extent to which a lawn can be irrigated during conservation periods.
Limited knowledge of turfgrass maintenance under drought conditions and water restrictions has created challenges for home owners’ and turf managers’ inabilities to take care of turf. Selecting cultivars and management practices that result in a higher tolerance of drought can be the difference between having a healthy lawn and a dead lawn when water is decreased. Maintenance during establishment is arguably just as important as proper cultivar selection. To combat limited moisture in the upper part of the soil, deep rooting will help turf to utilize water well below the soil surface. In areas where warm-season turfgrass enters winter dormancy, cool season turfgrasses have historically been overseeded to maintain green color throughout the dormancy period. However, this practice may not be feasible under limited irrigation frequency associated with water restriction periods. Alternatives that do not require supplemental water, such as the use of colorants, have been increasingly utilized on areas that do not endure excessive wear.
The objectives of this study are to (1) evaluate establishment cultural practices on turf quality and root development of ‘Floratam’ and newly released St. Augustinegrass cultivar ‘TamStar’ during a simulated water variance period and (2) evaluate the performance of overseeded, colorant treated, and untreated ‘Tifway’
bermudagrass under water restriction and traffic.
Advisors/Committee Members: Wherley, Benjamin G (advisor), White, Richard H (advisor), Elmore, Matthew (committee member), Chandra, Ambika (committee member).
Subjects/Keywords: Turfgrass; Drought; Rooting; St. Augustinegrass; Bermudagrass; Overseed; Colorant; Traffic; Irrigation
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APA (6th Edition):
Hargey, D. F. (2015). Establishment and Management of Turfgrass Under Municipal Water Restrictions. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156210
Chicago Manual of Style (16th Edition):
Hargey, Daniel Francis. “Establishment and Management of Turfgrass Under Municipal Water Restrictions.” 2015. Masters Thesis, Texas A&M University. Accessed March 04, 2021.
http://hdl.handle.net/1969.1/156210.
MLA Handbook (7th Edition):
Hargey, Daniel Francis. “Establishment and Management of Turfgrass Under Municipal Water Restrictions.” 2015. Web. 04 Mar 2021.
Vancouver:
Hargey DF. Establishment and Management of Turfgrass Under Municipal Water Restrictions. [Internet] [Masters thesis]. Texas A&M University; 2015. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/1969.1/156210.
Council of Science Editors:
Hargey DF. Establishment and Management of Turfgrass Under Municipal Water Restrictions. [Masters Thesis]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/156210
Texas A&M University
20.
Spurgin, Chelsey L.
Effects of Crude Protein Content on Intake and Digestion of Coastal Bermudagrass Hay by Horses.
Degree: MS, Animal Science, 2011, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7970
► This study was conducted to determine the effect of forage CP level on intake and digestion of Coastal bermudagrass hay by horses. Four cecally fistulated…
(more)
▼ This study was conducted to determine the effect of forage CP level on intake
and digestion of Coastal
bermudagrass hay by horses. Four cecally fistulated geldings
were used in a 4 x 4 Latin square design with four treatments and four periods. Horses
were fed one of four Coastal
bermudagrass hays consisting of 7, 10, 13, or 16% CP
during each of the 4 15-d periods. Intake and apparent digestibility were determined for
each horse at the end of each period by total fecal collection. In addition, cecal fluid and
blood samples were collected from each horse on the last day of each period for
determination of cecal ammonia, cecal pH, plasma urea nitrogen, and plasma glucose
concentrations.
Crude protein concentration of Coastal
bermudagrass hay influenced equine
intake and digestion. Increasing CP concentration linearly increased digestible OM
intake (DOMI) from 3.79 to 5.98 kg/d for 7 and 16% CP hay, respectively (P = 0.04).
Furthermore, as forage CP level increased, CP intake increased linearly (P < 0.01).
Forage CP level had no effect on forage DM intake. Quadratic effects (P less than or equal to 0.05) were observed for forage OM, NDF, ADF, and digestible energy. Overall digestibility was
lowest for the 7% CP hay and highest for the 10% CP hay.
Cecal pH remained above 6.62 irrespective of treatment and time, indicating that
cecal pH was suitable for microbial growth. As forage CP level increased, cecal
ammonia concentration increased linearly from 0.03 mM for the 7% to 1.74 mM for the
15% CP hay (P < 0.01). Concentration of plasma glucose also linearly increased (P =
0.04) from 68.77 to 73.68 mg/dL as CP concentration increased from 7% to 16% CP.
Plasma urea nitrogen exhibited a quadratic effect as concentration increased (P < 0.01)
from 4.34 to 5.61 mM for the 7 and 16% CP hays, respectively.
Advisors/Committee Members: Wickersham, Tryon A. (advisor), Coverdale, Josie A. (advisor), Redmon, Larry A. (committee member).
Subjects/Keywords: Horse; Equine; Forage; Crude Protein; Digestion; Intake; Coastal bermudagrass
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APA (6th Edition):
Spurgin, C. L. (2011). Effects of Crude Protein Content on Intake and Digestion of Coastal Bermudagrass Hay by Horses. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7970
Chicago Manual of Style (16th Edition):
Spurgin, Chelsey L. “Effects of Crude Protein Content on Intake and Digestion of Coastal Bermudagrass Hay by Horses.” 2011. Masters Thesis, Texas A&M University. Accessed March 04, 2021.
http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7970.
MLA Handbook (7th Edition):
Spurgin, Chelsey L. “Effects of Crude Protein Content on Intake and Digestion of Coastal Bermudagrass Hay by Horses.” 2011. Web. 04 Mar 2021.
Vancouver:
Spurgin CL. Effects of Crude Protein Content on Intake and Digestion of Coastal Bermudagrass Hay by Horses. [Internet] [Masters thesis]. Texas A&M University; 2011. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7970.
Council of Science Editors:
Spurgin CL. Effects of Crude Protein Content on Intake and Digestion of Coastal Bermudagrass Hay by Horses. [Masters Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7970
Texas A&M University
21.
Matocha, Matthew Edward.
Hybrid bermudagrass [Cynodon dactylon (L.) Pers.] tolerance and broadleaf weed control using tank mix combinations of diflufenzopyr.
Degree: MS, Agronomy, 2009, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-1034
► Field studies were conducted during the 2003 and 2004 growing seasons to: 1) evaluate the control of silverleaf nightshade and western ragweed, and (2) assess…
(more)
▼ Field studies were conducted during the 2003 and 2004 growing seasons to: 1)
evaluate the control of silverleaf nightshade and western ragweed, and (2) assess the
forage tolerance of Coastal and Tifton 85
bermudagrass hybrids using tank mix
combinations of diflufenzopyr. Herbicides that were evaluated in each study included
picloram, multiple rates of picloram with diflufenzopyr, triclopyr, triclopyr with
diflufenzopyr, dicamba + diflufenzopyr, and diflufenzopyr alone. Visual ratings were
taken on the weed control experiments approximately 30, 60 and 90 days after treatment.
Phytotoxicity ratings were taken prior to each harvest of the Coastal and Tifton 85
varieties to determine influence of each herbicide treatment. Each
bermudagrass variety
was harvested twice during each growing season to determine dry matter yield and
quality. Forage quality, including crude protein, acid detergent fiber, and neutral
detergent fiber, was assessed using near infrared reflectance spectroscopy.
Adding diflufenzopyr to triclopyr did not consistently increase control of
silverleaf nightshade or western ragweed. In general, picloram + diflufenzopyr and
picloram applied alone provided the greatest control of both species at the highest rate of
picloram. Increased efficacy was more evident from the addition of diflufenzopyr to picloram in 2004 on western ragweed. By the final ratings in both experimental years,
dicamba + diflufenzopyr provided no more than 76% control of either species.
Both forage varieties showed significant variability in phytotoxicity between
years. Although observed levels of growth reduction were relatively high at the first
harvest in 2003, no treatment exceeded a 10% growth reduction by the second harvest
for either forage variety. In addition, the only significant reduction in dry matter yield
occurred at the first harvest of Coastal in 2003 from picloram + diflufenzopyr applied at
the highest rate.
Advisors/Committee Members: Baumann, Paul A. (advisor), Morgan, Gaylon D. (committee member), Sprott, Lesley R. (committee member).
Subjects/Keywords: bermudagrass tolerance; weed control
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APA (6th Edition):
Matocha, M. E. (2009). Hybrid bermudagrass [Cynodon dactylon (L.) Pers.] tolerance and broadleaf weed control using tank mix combinations of diflufenzopyr. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1034
Chicago Manual of Style (16th Edition):
Matocha, Matthew Edward. “Hybrid bermudagrass [Cynodon dactylon (L.) Pers.] tolerance and broadleaf weed control using tank mix combinations of diflufenzopyr.” 2009. Masters Thesis, Texas A&M University. Accessed March 04, 2021.
http://hdl.handle.net/1969.1/ETD-TAMU-1034.
MLA Handbook (7th Edition):
Matocha, Matthew Edward. “Hybrid bermudagrass [Cynodon dactylon (L.) Pers.] tolerance and broadleaf weed control using tank mix combinations of diflufenzopyr.” 2009. Web. 04 Mar 2021.
Vancouver:
Matocha ME. Hybrid bermudagrass [Cynodon dactylon (L.) Pers.] tolerance and broadleaf weed control using tank mix combinations of diflufenzopyr. [Internet] [Masters thesis]. Texas A&M University; 2009. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1034.
Council of Science Editors:
Matocha ME. Hybrid bermudagrass [Cynodon dactylon (L.) Pers.] tolerance and broadleaf weed control using tank mix combinations of diflufenzopyr. [Masters Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1034
22.
Payne, Catherine Pomeroy.
Effect of Increasing Protein Supplementation on Intake and Digestion of Bermudagrass Hays of Divergent Quality by Beef Cattle.
Degree: MS, Animal Science, 2012, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9295
► Bermudagrass (Cynodon dactylon (L) Pers.), one of the predominant forages in the southeastern US, varies in nutritive value in response to management and environmental factors.…
(more)
▼ Bermudagrass (Cynodon dactylon (L) Pers.), one of the predominant forages in the southeastern US, varies in nutritive value in response to management and environmental factors. Beef cattle supplementation decisions are complicated by this variability. Therefore, our objective was to determine the effect of four protein supplementation levels (0, 82, 119 and 155 mg N/kg BW) on the utilization of three
bermudagrass hays (5.6, 6.3, and 8.1 percent CP).Thirteen ruminally fistulated Angus x Hereford steers (BW = 330 plus/minus 19 kg) were used in a 13 x 4 incomplete Latin square design with 13 treatments. Treatments were arranged as a 3 x 4 factorial plus a control
bermudagrass hay (10.8 percent CP). Hay was provided ad libitum and protein supplements were offered as range cubes once daily. Periods were 15 d with intake determinations made on d 10 through d 13 to correspond with fecal grab samples collected from d 11 through d 14. Acid detergent insoluble ash was used as an internal marker for determination of fecal output. Hay OM intake of unsupplemented steers increased linearly (P < 0.01) as hay nutritive value increased from 75 to 77, 96 and 94 g/kg BW
0.75 for 5.6, 6.3, 8.1 and 10.8 percent CP hays, respectively. A cubic increase (P = 0.03) in OM digestibility for unsupplemented hays was observed with values ranging from 46 to 65 percent. This resulted in a linear increase (P < 0.01) in total digestible OM intake in response to hay nutritive value from 35 to 45, 51, and 60 g/kg BW
0.75 for 5.6, 6.3, 8.1, and 10.8 percent CP hays, respectively. No significant effects on total digestible OM intake were observed when hays were supplemented with protein. There was a tendency for forage OM intake of the 6.3 percent CP hay to increase linearly with supplemental protein (P = 0.08). Total OM intake increased linearly (P < 0.01) when CP was supplemented to the 6.3 percent CP hay from 77 to 88, 92, and 98 g/kg BW
0.75 for 0, 82, 119, and 155 mg N/kg BW, respectively. We conclude that forage CP content was the primary driver in determining total digestible OM intake, and the effects of protein supplementation on utilization of
bermudagrass hay were varied.
Advisors/Committee Members: Wickersham, Tryon A. (advisor), Sawyer, Jason E. (committee member), Rouquette, Jr., Francis M. (committee member), Redmon, Larry A. (committee member).
Subjects/Keywords: bermudagrass; cattle; protein; supplementation
…EFFECT OF INCREASING PROTEIN SUPPLEMENTATION ON INTAKE
AND DIGESTION OF BERMUDAGRASS HAYS… …Increasing Protein Supplementation on Intake and Digestion of Bermudagrass
Hays of Divergent… …SUPPLEMENTATION ON INTAKE
AND DIGESTION OF BERMUDAGRASS HAYS OF DIVERGENT QUALITY
BY BEEF CATTLE
A… …Digestion of Bermudagrass
Hays of Divergent Quality by Beef Cattle. (May 2011)
Catherine… …Dr. Tryon A. Wickersham
Bermudagrass (Cynodon dactylon (L) Pers.), one…
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APA (6th Edition):
Payne, C. P. (2012). Effect of Increasing Protein Supplementation on Intake and Digestion of Bermudagrass Hays of Divergent Quality by Beef Cattle. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9295
Chicago Manual of Style (16th Edition):
Payne, Catherine Pomeroy. “Effect of Increasing Protein Supplementation on Intake and Digestion of Bermudagrass Hays of Divergent Quality by Beef Cattle.” 2012. Masters Thesis, Texas A&M University. Accessed March 04, 2021.
http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9295.
MLA Handbook (7th Edition):
Payne, Catherine Pomeroy. “Effect of Increasing Protein Supplementation on Intake and Digestion of Bermudagrass Hays of Divergent Quality by Beef Cattle.” 2012. Web. 04 Mar 2021.
Vancouver:
Payne CP. Effect of Increasing Protein Supplementation on Intake and Digestion of Bermudagrass Hays of Divergent Quality by Beef Cattle. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9295.
Council of Science Editors:
Payne CP. Effect of Increasing Protein Supplementation on Intake and Digestion of Bermudagrass Hays of Divergent Quality by Beef Cattle. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9295
North Carolina State University
23.
Rutledge, James Marable.
Growth Characteristics and Physiological Stress Tolerance of Eight Bermudagrass Cultivars Intended for Athletic Fields and Golf Course Fairways.
Degree: MS, Crop Science, 2005, North Carolina State University
URL: http://www.lib.ncsu.edu/resolver/1840.16/1377
► Bermudagrass (Cynodon [L.] Rich) is well suited for use as recreational turf in the southeastern United States. Cultivars included in the trial were, 'TifSport', 'Tifway',…
(more)
▼ Bermudagrass (Cynodon [L.] Rich) is well suited for use as recreational turf in the southeastern United States. Cultivars included in the trial were, 'TifSport', 'Tifway', 'Tifton 10', 'Navy Blue', 'GN-1', 'Patriot', 'Celebration' and 'Quickstand'. During 2003 and 2004, data were collected on a wide range of criteria including, response to mowing height differential, nitrogen fertility rates, root and thatch production, surface hardness, rate of lateral spread, disease incidence, visual turf quality, wear tolerance, drought tolerance, and low temperature stress tolerance.
Under mowing heights of 1.25 and 1.90 cm in 2003, TifSport reflected the highest turf quality ratings at both heights of cut and mowing height had little effect on cultivars. Nitrogen fertility rates of 100, 150, and 200 kg N ha-1 had no effect on cultivars at any time during the study. In 2003, TifSport had the greatest root mass, while GN-1 and Navy Blue produced the greatest amount of thatch. Celebration had the least surface hardness during 2004. Rate of lateral spread data was gathered in 2004 by extracting cores from each plot and monitoring regrowth using digital images over a period of four weeks. Celebration achieved the greatest recovery at 86% by the fourth week, followed by TifSport and Quickstand, each with 70% recovery. In May 2004, Spring Dead Spot (Ophiosphaerella korrae) was observed on the field plots. Tifway had a greatest percent disease by area than did all other cultivars. Visual ratings over both years consistently ranked TifSport and Celebration higher due to their deep green color, fine texture, and high density. Traffic simulation had an effect on Quickstand, GN-1, Navy Blue, and Tifton 10. Navy Blue resisted leaf firing until the seventh week of the drought stress study; longer than any other cultivar. Low temperature stress tolerance testing was conducted using two methods, dormant field cores and excised stolons in February of 2003 and 2004. Field cores were potted and placed in a Low Temperature Stress Simulator (LTSS) at a temperature of either -1 °C or -7 °C for varying exposure lengths of 12, 24, 48, or 72 h, respectively. Patriot and Quickstand exhibited greater recovery rates than all other cultivars in the core study at -7 °C. The stolon study was composed of a single 24 h exposure length with temperatures ranging from 3 °C to -10 °C. Results between the core and stolon studies show correlation (rs = 0.82 and a probability of 0.01) with 'Quickstand' and 'Navy Blue' being more cold tolerant than all other cultivars with the exception of 'Patriot'.
Advisors/Committee Members: Dr. Charles H. Peacock, Committee Chair (advisor), Dr. Rich Cooper, Committee Member (advisor), Dr. Art Bruneau, Committee Member (advisor).
Subjects/Keywords: bermudagrass; cultivar trial; stress tolerance
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APA (6th Edition):
Rutledge, J. M. (2005). Growth Characteristics and Physiological Stress Tolerance of Eight Bermudagrass Cultivars Intended for Athletic Fields and Golf Course Fairways. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/1377
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rutledge, James Marable. “Growth Characteristics and Physiological Stress Tolerance of Eight Bermudagrass Cultivars Intended for Athletic Fields and Golf Course Fairways.” 2005. Thesis, North Carolina State University. Accessed March 04, 2021.
http://www.lib.ncsu.edu/resolver/1840.16/1377.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rutledge, James Marable. “Growth Characteristics and Physiological Stress Tolerance of Eight Bermudagrass Cultivars Intended for Athletic Fields and Golf Course Fairways.” 2005. Web. 04 Mar 2021.
Vancouver:
Rutledge JM. Growth Characteristics and Physiological Stress Tolerance of Eight Bermudagrass Cultivars Intended for Athletic Fields and Golf Course Fairways. [Internet] [Thesis]. North Carolina State University; 2005. [cited 2021 Mar 04].
Available from: http://www.lib.ncsu.edu/resolver/1840.16/1377.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rutledge JM. Growth Characteristics and Physiological Stress Tolerance of Eight Bermudagrass Cultivars Intended for Athletic Fields and Golf Course Fairways. [Thesis]. North Carolina State University; 2005. Available from: http://www.lib.ncsu.edu/resolver/1840.16/1377
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
North Carolina State University
24.
Reynolds, William Casey.
Establishment Rates and Growth Characteristics of Six Bermudagrass Cultivars for use on Athletic Fields and Golf Course Fairways.
Degree: MS, Crop Science, 2002, North Carolina State University
URL: http://www.lib.ncsu.edu/resolver/1840.16/2167
► Bermudagrass (Cynodon spp.) is the primary choice for athletic fields and golf course fairways in the southeastern United States. Its superior heat and drought tolerance…
(more)
▼ Bermudagrass (Cynodon spp.) is the primary choice for athletic fields and golf course fairways in the southeastern United States. Its superior heat and drought tolerance as well as excellent recuperative capacity allow it to withstand many of the stresses often associated with recreational turf. There are several new cultivars on the market with little available information regarding their performance. Six cultivars of
bermudagrass, 'TifSport', 'Tifway', 'GN-1', 'Quickstand', 'Navy Blue', and 'Tifton 10' were established by sprigs on a Candor sand (Sandy, siliceous, thermic, Arenic Paleudult) at the rate of 0.1m3/100m2 on 28 June 2001 at the Sandhills Research Station in Jackson Springs, NC. During year one of the study, data were taken on establishment, rooting, disease incidence, fall color, and spring green-up of each of the six bermudagrasses. Tifton 10 demonstrated the ability to establish faster than all other cultivars based on its ranking on all observation dates followed by Quickstand and GN-1, which had five and four top rankings, respectively. No differences in rooting density were found among the six cultivars. Navy Blue exhibited significantly more dollar spot (Sclerotinia homoeocarpa F.T. Bennett) incidence than all other cultivars, while GN-1 had significanctly higher incidence of Large patch (Rhizoctonia solani). During April 2002, 10.8 cm diameter plugs were taken from the field plots for the low temperature study. Sixty stolons per cultivar were excised from the plugs and placed into a Low Temperature Stress Simulator (LTSS) where they were exposed to four different temperatures of 2°C, 0°C, -2°C, and -4 °C for a period of 24 hr. No significant differences were found among cultivars in their ability to tolerate low temperatures, but mortality did increase as temperature decreased. After the field plots had achieved one year of growth, data were taken on growth characteristics such as root and rhizome mass, recuperative potential, surface hardness, seedhead production, and overall quality. No significant differences were found in root or rhizome mass among the six cultivars. Quickstand produced a harder surface than all other cultivars on 24 July, while Tifton 10, GN-1, and TifSport were the softest. TifSport consistently produced the highest turf quality of the six cultivars followed by Tifway, GN-1, and Navy Blue. Quickstand and Tifton 10 had the poorest quality over four observation dates, primarily due to their coarse texture and off-green color. Differences among these six
bermudagrass cultivars imply that they may not all be suitable for the same situation. Turfgrass managers can match this data to their intended use and more accurately choose which cultivar will perform best under their specific conditions.
Advisors/Committee Members: Charles H. Peacock, Committee Co-Chair (advisor), Richard J. Cooper, Committee Co-Chair (advisor), Arthur H. Bruneau, Committee Member (advisor), Mitzi Montoya-Weiss, Committee Member (advisor).
Subjects/Keywords: Bermudagrass; Cold Tolerance; TifSport
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APA (6th Edition):
Reynolds, W. C. (2002). Establishment Rates and Growth Characteristics of Six Bermudagrass Cultivars for use on Athletic Fields and Golf Course Fairways. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/2167
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Reynolds, William Casey. “Establishment Rates and Growth Characteristics of Six Bermudagrass Cultivars for use on Athletic Fields and Golf Course Fairways.” 2002. Thesis, North Carolina State University. Accessed March 04, 2021.
http://www.lib.ncsu.edu/resolver/1840.16/2167.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Reynolds, William Casey. “Establishment Rates and Growth Characteristics of Six Bermudagrass Cultivars for use on Athletic Fields and Golf Course Fairways.” 2002. Web. 04 Mar 2021.
Vancouver:
Reynolds WC. Establishment Rates and Growth Characteristics of Six Bermudagrass Cultivars for use on Athletic Fields and Golf Course Fairways. [Internet] [Thesis]. North Carolina State University; 2002. [cited 2021 Mar 04].
Available from: http://www.lib.ncsu.edu/resolver/1840.16/2167.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Reynolds WC. Establishment Rates and Growth Characteristics of Six Bermudagrass Cultivars for use on Athletic Fields and Golf Course Fairways. [Thesis]. North Carolina State University; 2002. Available from: http://www.lib.ncsu.edu/resolver/1840.16/2167
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Virginia Tech
25.
Johnson, Michael Dale.
The Control of Various Bermudagrass Cultivars in Tall Fescue Utilizing Fenoxaprop & Fluazifop.
Degree: MS, Plant Pathology, Physiology, and Weed Science, 2000, Virginia Tech
URL: http://hdl.handle.net/10919/32171
► Bermudagrass (Cynodon dactylon (L). Pers.) is considered to be one of the most difficult to control grass weeds in turf throughout the U.S. Recent breeding…
(more)
▼ Bermudagrass (Cynodon dactylon (L). Pers.) is considered to be one of the most difficult to control grass weeds in turf throughout the U.S. Recent breeding efforts have produced much more desirable
bermudagrass cultivars, and therefore its use has increased. Ironically, as
bermudagrass use becomes more popular it poses even greater difficulties to the turf manager. The need to control these warm season turfgrass species, without causing injury to other desirable turfgrass species, is one of the most intractable problems a turf specialist encounters. Herbicides previously used to selectively control
bermudagrass such as siduron and oxadiazon have proven to be of only minimal efficacy or to induce significant injury to other desirable turfgrasses. Tests conducted in 1993, 1994 and 1995 have indicated that fenoxaprop plus fluazifop (Horizon 2000R) controlled
bermudagrass effectively. Six
bermudagrass (Cynodon dactylon) cultivars and tall fescue (Festuca arundinacea) were used in the susceptibility studies. Visual control and cover ratings were taken at two-week intervals until ten weeks after the final treatment. Sequential applications of labeled rates of fenoxaprop or fluazifop alone only temporarily controlled
bermudagrass shoots. Horizon 2000 applied at 0.40 kg ai/ha in three sequential applications proved effective in controlling
bermudagrass rhizomes and stolons. From results of previous studies and research conducted here it has been hypothesized that synergistic effects of fenoxaprop on fluazifop allow both differential control of various
bermudagrass cultivars and increased tall fescue tolerance to these herbicides.
Advisors/Committee Members: Bingham, Samuel Wayne (committeechair), Hagood, Edward Scott Jr. (committee member), Hall, John R. (committee member).
Subjects/Keywords: Bermudagrass; Herbicide; Tall Fescue
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APA (6th Edition):
Johnson, M. D. (2000). The Control of Various Bermudagrass Cultivars in Tall Fescue Utilizing Fenoxaprop & Fluazifop. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/32171
Chicago Manual of Style (16th Edition):
Johnson, Michael Dale. “The Control of Various Bermudagrass Cultivars in Tall Fescue Utilizing Fenoxaprop & Fluazifop.” 2000. Masters Thesis, Virginia Tech. Accessed March 04, 2021.
http://hdl.handle.net/10919/32171.
MLA Handbook (7th Edition):
Johnson, Michael Dale. “The Control of Various Bermudagrass Cultivars in Tall Fescue Utilizing Fenoxaprop & Fluazifop.” 2000. Web. 04 Mar 2021.
Vancouver:
Johnson MD. The Control of Various Bermudagrass Cultivars in Tall Fescue Utilizing Fenoxaprop & Fluazifop. [Internet] [Masters thesis]. Virginia Tech; 2000. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10919/32171.
Council of Science Editors:
Johnson MD. The Control of Various Bermudagrass Cultivars in Tall Fescue Utilizing Fenoxaprop & Fluazifop. [Masters Thesis]. Virginia Tech; 2000. Available from: http://hdl.handle.net/10919/32171
University of Florida
26.
Darling, Courtney L.
Glyphosate Alone and in Tank-Mixes for Control of Perennial Grass Weed Species in Bermudagrass.
Degree: MS, Agronomy, 2019, University of Florida
URL: https://ufdc.ufl.edu/UFE0055810
► Bermudagrass (Cynodon dactylon (L.) Pers.) is used extensively across the Southeastern United.States. as a forage crop for livestock, particularly in the form of hay. It…
(more)
▼ Bermudagrass (Cynodon dactylon (L.) Pers.) is used extensively across the Southeastern United.States. as a forage crop for livestock, particularly in the form of hay. It is also utilized in grazing systems and as turf in commercial and residential settings. Despite its typically aggressive growth characteristics,
bermudagrass is suseptiable to weed invasion, especially from other perennial grasses. There were two main objectives of this research. The first objective evaluated the tolerance of two popular hybrid cultivars (Coastal and Jiggs) in Florida to broadcast applications of four rates (0.28, 0.56, 0.84, and 1.12 kg ae ha-1) of the nonselective herbicide, glyphosate at three different application timings. The second objective evaluated the effect of common pasture herbicides as stand-alone applications or tank-mixes with glyphosate for control of perennial grass weed species bahiagrass (Paspalum notatum Flugge.), vaseygrass (Paspalum urvillei Steud.), and guineagrass (Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs) often found in
bermudagrass hay systems. Coastal
bermudagrass was the most tolerant of the two cultivars to glyphosate, with only a 26% decrease in biomass at the highest rate (1.12 kg ha-1) applied at the latest timing of 14 DAC. In contrast Jiggs
bermudagrass was more sensitive to glyphosate at rates of 0.56 kg ha-1 and higher, particularly when the application timing was delayed until 7 or 14 DAC.The nutritive value of both cultivars declined when the highest rate of glyphosate was applied 14 DAC. These results indicate that glyphosate must be applied sooner and at lower rates to Jiggs than Coastal
bermudagrass and that high rates of glyphosate applied 14 DAC, or later will impact forage quality. Bahiagrass, vaseygrass, and guineagrass varied in their responses to glyphosate, imazapic, and nicosulfuron + metsulfuron. Vaseygrass was more sensitive to all rates of imazapic compared to bahiagrass and guinesgrass, while guineagrass was more sensitive to glyphosate applications than bahiagrass and vaseygrass. Bahiagrass was the most toolerant to all herbicide treatments of the three weed species, with the need for multiple herbicide applications to achieve full control. Although bahiagrass control varied (8.7 to 91.2%), greater control was achieved with glyphosate tank-mixes than glyphosate alone. Tank-mixing glyphosate with other herbicides resulted in greater control of guineagrass, but not vaseygrass. ( en )
Advisors/Committee Members: Sellers,Brent Alan (committee chair), Ferrell,Jason Arden (committee member), Dubeux,Jose Carlos (committee member).
Subjects/Keywords: bahiagrass – bermudagrass – biomass – glyphosate – guineagrass – imazapic – metsulfuron – nicosulfuron – vaseygrass
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APA (6th Edition):
Darling, C. L. (2019). Glyphosate Alone and in Tank-Mixes for Control of Perennial Grass Weed Species in Bermudagrass. (Masters Thesis). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0055810
Chicago Manual of Style (16th Edition):
Darling, Courtney L. “Glyphosate Alone and in Tank-Mixes for Control of Perennial Grass Weed Species in Bermudagrass.” 2019. Masters Thesis, University of Florida. Accessed March 04, 2021.
https://ufdc.ufl.edu/UFE0055810.
MLA Handbook (7th Edition):
Darling, Courtney L. “Glyphosate Alone and in Tank-Mixes for Control of Perennial Grass Weed Species in Bermudagrass.” 2019. Web. 04 Mar 2021.
Vancouver:
Darling CL. Glyphosate Alone and in Tank-Mixes for Control of Perennial Grass Weed Species in Bermudagrass. [Internet] [Masters thesis]. University of Florida; 2019. [cited 2021 Mar 04].
Available from: https://ufdc.ufl.edu/UFE0055810.
Council of Science Editors:
Darling CL. Glyphosate Alone and in Tank-Mixes for Control of Perennial Grass Weed Species in Bermudagrass. [Masters Thesis]. University of Florida; 2019. Available from: https://ufdc.ufl.edu/UFE0055810
27.
Pearsaul, David G.
Integrated Control of Tropical Signalgrass (Urochloa Subquadripara) in Turf.
Degree: MS, Agronomy, 2017, University of Florida
URL: https://ufdc.ufl.edu/UFE0051886
► Tropical signalgrass (TSG) has become a troublesome weed in south Florida following the removal of monosodium methane arsenate (MSMA), an effective and economical postemergence (POST)…
(more)
▼ Tropical signalgrass (TSG) has become a troublesome weed in south Florida following the removal of monosodium methane arsenate (MSMA), an effective and economical postemergence (POST) herbicide, from the turfgrass market at the end of 2012. Turfgrass managers have relied heavily upon this herbicide to control TSG, as well as many other weeds, for many years and are now searching for a comparable replacement.
Advisors/Committee Members: LEON-GONZALEZ,RAMON G (committee chair), SILVEIRA,MARIA LUCIA (committee member), ODERO,DENNIS C (committee member).
Subjects/Keywords: bermudagrass – brasu – iwm – verticutting
…TSG in bermudagrass turf. In one study, verticutting, a cultural practice that
is regularly… …et al. (2015) documented that after MSMA
applications to bermudagrass, a small… …bermudagrass turf. There are currently few to no options available for controlling this
weed in an… …approach to controlling tropical signalgrass in hybrid bermudagrass. Field experiments
were… …Tifway 419’ bermudagrass infested with TSG (>35% ground
cover).
The IWM study was…
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APA (6th Edition):
Pearsaul, D. G. (2017). Integrated Control of Tropical Signalgrass (Urochloa Subquadripara) in Turf. (Masters Thesis). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0051886
Chicago Manual of Style (16th Edition):
Pearsaul, David G. “Integrated Control of Tropical Signalgrass (Urochloa Subquadripara) in Turf.” 2017. Masters Thesis, University of Florida. Accessed March 04, 2021.
https://ufdc.ufl.edu/UFE0051886.
MLA Handbook (7th Edition):
Pearsaul, David G. “Integrated Control of Tropical Signalgrass (Urochloa Subquadripara) in Turf.” 2017. Web. 04 Mar 2021.
Vancouver:
Pearsaul DG. Integrated Control of Tropical Signalgrass (Urochloa Subquadripara) in Turf. [Internet] [Masters thesis]. University of Florida; 2017. [cited 2021 Mar 04].
Available from: https://ufdc.ufl.edu/UFE0051886.
Council of Science Editors:
Pearsaul DG. Integrated Control of Tropical Signalgrass (Urochloa Subquadripara) in Turf. [Masters Thesis]. University of Florida; 2017. Available from: https://ufdc.ufl.edu/UFE0051886
Clemson University
28.
Landry, Robin.
THE RESPONSE OF BERMUDAGRASSES [Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy] AND CREEPING BENTGRASS [Agrostis Stoloniferi (L.)] TO A COMMERCIAL HUMECTANT AND WETTING AGENTS DURING SUMMER.
Degree: MS, Plant and Environmental Science, 2012, Clemson University
URL: https://tigerprints.clemson.edu/all_theses/1455
► Four field studies, one laboratory and one greenhouse study were conducted from April 2011 through August 2011 at Clemson University in Clemson, SC on…
(more)
▼ Four field studies, one laboratory and one greenhouse study were conducted from April 2011 through August 2011 at Clemson University in Clemson, SC on `L-93'creeping bentgrass (Agrostis stolonifera L.), `Tifeagle'
bermudagrass (Cynodon dactylon (L.) Pers. X C. transvaalensis Burtt-Davy), and a combination of `Tifway' (Cynodon dactylon (L.) Pers. X C. transvaalensis Burtt-Davy) and common
bermudagrass (Cynodon dactylon (L.) The objectives of this research were: (i) evaluate bentgrass response to two irrigation regimes, light and frequent irrigation (replacing daily ET), verses deep and infrequent irrigation (watering at the sign of wilt); (ii) evaluate the combination of a humectant and a soil wetting agent under these two irrigation regimes; (iii) evaluate the efficacy of a humectant, various wetting agents and a fungicide on
bermudagrass infected with fairy ring (Lycopedon spp.); (iv) evaluate a humectant and various wetting agents on localized dry spots (LDS) on a `TifEagle'
bermudagrass putting green; (v) evaluate a humectant and various wetting agents on non-irrigated common and `Tifway'
bermudagrass blend in a sports field; (vi) assess the changes in volumetric water content (VWC) of a soil treated with different water sources, a humectant and a wetting agent; and (vii) assess the fluctuations of volumetric water content over a 7 day period under two relative humidity levels. The humectant, Hydretain ES Plus; two wetting agents, Cascade Plus and Primer Select; and Primer Select + the commercial fungicide, Prostar (flutolanil), were used during these studies. All field treatments were applied according to the label rate and plots were irrigated prior to application at 2.54 mm (0.10 inches) and following application at 6.35 mm (0.25 inches) to provide uniform soil moisture, except for the non-irrigated study. All treatments provided a normal electrical conductivity (EC) of 0.01 dS/m for the bentgrass irrigation regimes. Also, the light and frequent irrigation (LF) plots had the highest EC while the dielectric constant increased by 6v (volts) throughout each study. Turf quality and turf color provided acceptable visual quality and color of ≥7, but did not differ from the control. Phytotoxicity provided a rating of >40% and suggests there was significant chemical burn. At 14 DAT, Cascade held the most moisture in the upper 0-5.7 cm rootzone at 30%. Cascade provided a 20% increase on the upper rootzone moisture verses the other treatments. Soil temperatures were maintained around 35¡C for all studies on the bentgrass. All root diameter measurements provided a slight decrease from the beginning to the end from approximately 0.22 to 0.19 cm. Root length increased from 397 cm to 591 from the first sampling to 35 DAT, respectively. However, root length decreased from 35 to 42 DAT from 591 cm to 444 cm, respectively, Root volume also provided a similar trend decreasing after 35 DAT. Localized dry spot and fairy ring treatments provided a wettable (water penetrating the soil in <5 >seconds) to…
Advisors/Committee Members: McCarty, Dr. Lambert B, Quisenberry , Dr. Virgil, Bridges , Dr. William.
Subjects/Keywords: Bentgrass; Bermudagrass; Irrigation; Summer Stress; Surfactants; Wetting Agents; Plant Sciences
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APA (6th Edition):
Landry, R. (2012). THE RESPONSE OF BERMUDAGRASSES [Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy] AND CREEPING BENTGRASS [Agrostis Stoloniferi (L.)] TO A COMMERCIAL HUMECTANT AND WETTING AGENTS DURING SUMMER. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/1455
Chicago Manual of Style (16th Edition):
Landry, Robin. “THE RESPONSE OF BERMUDAGRASSES [Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy] AND CREEPING BENTGRASS [Agrostis Stoloniferi (L.)] TO A COMMERCIAL HUMECTANT AND WETTING AGENTS DURING SUMMER.” 2012. Masters Thesis, Clemson University. Accessed March 04, 2021.
https://tigerprints.clemson.edu/all_theses/1455.
MLA Handbook (7th Edition):
Landry, Robin. “THE RESPONSE OF BERMUDAGRASSES [Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy] AND CREEPING BENTGRASS [Agrostis Stoloniferi (L.)] TO A COMMERCIAL HUMECTANT AND WETTING AGENTS DURING SUMMER.” 2012. Web. 04 Mar 2021.
Vancouver:
Landry R. THE RESPONSE OF BERMUDAGRASSES [Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy] AND CREEPING BENTGRASS [Agrostis Stoloniferi (L.)] TO A COMMERCIAL HUMECTANT AND WETTING AGENTS DURING SUMMER. [Internet] [Masters thesis]. Clemson University; 2012. [cited 2021 Mar 04].
Available from: https://tigerprints.clemson.edu/all_theses/1455.
Council of Science Editors:
Landry R. THE RESPONSE OF BERMUDAGRASSES [Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy] AND CREEPING BENTGRASS [Agrostis Stoloniferi (L.)] TO A COMMERCIAL HUMECTANT AND WETTING AGENTS DURING SUMMER. [Masters Thesis]. Clemson University; 2012. Available from: https://tigerprints.clemson.edu/all_theses/1455
Clemson University
29.
Canegallo, Alejandro L.
Characterization and Control of Ophiosphaerella spp. Causing Spring Dead Spot of Bermudagrass in South Carolina, USA and Buenos Aires, Argentina.
Degree: PhD, Plant and Environmental Science, 2016, Clemson University
URL: https://tigerprints.clemson.edu/all_dissertations/1646
► Spring dead spot (SDS) disease is an important root disease of bermudagrass (Cynodon spp.) in transition zone habitats around the world. Causal agents have been…
(more)
Subjects/Keywords: Argentina; Bermudagrass; Ophiosphaerella; South Carolina; Spring Dead Spot
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APA (6th Edition):
Canegallo, A. L. (2016). Characterization and Control of Ophiosphaerella spp. Causing Spring Dead Spot of Bermudagrass in South Carolina, USA and Buenos Aires, Argentina. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/1646
Chicago Manual of Style (16th Edition):
Canegallo, Alejandro L. “Characterization and Control of Ophiosphaerella spp. Causing Spring Dead Spot of Bermudagrass in South Carolina, USA and Buenos Aires, Argentina.” 2016. Doctoral Dissertation, Clemson University. Accessed March 04, 2021.
https://tigerprints.clemson.edu/all_dissertations/1646.
MLA Handbook (7th Edition):
Canegallo, Alejandro L. “Characterization and Control of Ophiosphaerella spp. Causing Spring Dead Spot of Bermudagrass in South Carolina, USA and Buenos Aires, Argentina.” 2016. Web. 04 Mar 2021.
Vancouver:
Canegallo AL. Characterization and Control of Ophiosphaerella spp. Causing Spring Dead Spot of Bermudagrass in South Carolina, USA and Buenos Aires, Argentina. [Internet] [Doctoral dissertation]. Clemson University; 2016. [cited 2021 Mar 04].
Available from: https://tigerprints.clemson.edu/all_dissertations/1646.
Council of Science Editors:
Canegallo AL. Characterization and Control of Ophiosphaerella spp. Causing Spring Dead Spot of Bermudagrass in South Carolina, USA and Buenos Aires, Argentina. [Doctoral Dissertation]. Clemson University; 2016. Available from: https://tigerprints.clemson.edu/all_dissertations/1646
University of Tennessee – Knoxville
30.
Yurisic, Cory Alan.
Rooting Characteristics and Antioxidant Pigment Responses of Three Hybrid Bermudagrass [<i>Cynodon dactylon</i> (L.) Pers. × <i>Cynodon transvaalensis</i> Burtt- Davy] Cultivars Exposed to Drought.
Degree: MS, Plant Sciences, 2016, University of Tennessee – Knoxville
URL: https://trace.tennessee.edu/utk_gradthes/3822
► With recent changes in global climate, water use and its conservation have become important topics of discussion. Turfgrasses for lawns, parks, and other recreational…
(more)
▼ With recent changes in global climate, water use and its conservation have become important topics of discussion. Turfgrasses for lawns, parks, and other recreational areas are often perceived negatively due to the need for irrigation. The identification of turfgrasses possessing an improved ability to withstand water deficit is an important goal in science to curb irrigation requirements in the landscape. Newly released cultivars of hybrid
bermudagrass (
C. dactylon L. x.
C. transvaalensis Burtt-Davy) have demonstrated improved tolerance to stresses such as cold, traffic, and water deficit; however, drought resistance mechanisms of these new cultivars have been largely uninvestigated. Drought resistant plant species are often characterized by deep and extensive root systems and improved antioxidant defense mechanisms that can reduce the damaging effects of reactive oxygen species. Several studies in a variety of different species of turfgrass have focused on root architecture, while others have examined changes in enzymatic antioxidants. However, investigations into the roles of antioxidant pigments in turfgrasses exposed to stress are quite limited. This research examined drought resistance aspects of three commonly known hybrid
bermudagrass cultivars. Experiments at two locations utilizing lysimeter-grown plants were designed to evaluate differences in rooting characteristics and changes in antioxidant pigment composition among cultivars exposed to drought stress. Hybrid
bermudagrass plants were grown in 45-cm tall lysimeters and subjected to 28 days of drought stress under natural field conditions by withholding all water during the summer of 2015. Lysimeters were arranged in a completely randomized experimental design with three replications at two locations. Pigments were extracted from leaf tissue using high performance liquid chromatography at four day intervals during the experiments. At the end of the study, plant roots were washed and analyzed for root length, mass, and architecture for three separate soil depths. Cultivars exhibited significant differences for antioxidant pigment composition and rooting characteristics. Cultivars evaluated in this study included ‘TifTuf’, ‘Latitude 36’, and ‘Tifway’. The TifTuf cultivar demonstrated superior drought resistance which was characterized by increased root weight, surface area, and volume at deeper soil depths, and greater antioxidant pigment concentrations and xanthophyll cycle activity at the later stages of drought.
Advisors/Committee Members: John C. Sorochan, Jim T. Brosnan, Dean A. Kopsell, John C. Stier.
Subjects/Keywords: Antioxidants; Pigments; Drought; Bermudagrass; Rooting; Carotenoids; Plant Biology
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APA ·
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APA (6th Edition):
Yurisic, C. A. (2016). Rooting Characteristics and Antioxidant Pigment Responses of Three Hybrid Bermudagrass [<i>Cynodon dactylon</i> (L.) Pers. × <i>Cynodon transvaalensis</i> Burtt- Davy] Cultivars Exposed to Drought. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/3822
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Yurisic, Cory Alan. “Rooting Characteristics and Antioxidant Pigment Responses of Three Hybrid Bermudagrass [<i>Cynodon dactylon</i> (L.) Pers. × <i>Cynodon transvaalensis</i> Burtt- Davy] Cultivars Exposed to Drought.” 2016. Thesis, University of Tennessee – Knoxville. Accessed March 04, 2021.
https://trace.tennessee.edu/utk_gradthes/3822.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yurisic, Cory Alan. “Rooting Characteristics and Antioxidant Pigment Responses of Three Hybrid Bermudagrass [<i>Cynodon dactylon</i> (L.) Pers. × <i>Cynodon transvaalensis</i> Burtt- Davy] Cultivars Exposed to Drought.” 2016. Web. 04 Mar 2021.
Vancouver:
Yurisic CA. Rooting Characteristics and Antioxidant Pigment Responses of Three Hybrid Bermudagrass [<i>Cynodon dactylon</i> (L.) Pers. × <i>Cynodon transvaalensis</i> Burtt- Davy] Cultivars Exposed to Drought. [Internet] [Thesis]. University of Tennessee – Knoxville; 2016. [cited 2021 Mar 04].
Available from: https://trace.tennessee.edu/utk_gradthes/3822.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yurisic CA. Rooting Characteristics and Antioxidant Pigment Responses of Three Hybrid Bermudagrass [<i>Cynodon dactylon</i> (L.) Pers. × <i>Cynodon transvaalensis</i> Burtt- Davy] Cultivars Exposed to Drought. [Thesis]. University of Tennessee – Knoxville; 2016. Available from: https://trace.tennessee.edu/utk_gradthes/3822
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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