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You searched for subject:(Sealed Storage). Showing records 1 – 2 of 2 total matches.

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Kansas State University

1. Cook, Samuel A.L. Evaluation of sealed storage silos for grain fumigation.

Degree: MS, Department of Grain Science and Industry, 2016, Kansas State University

Fumigation of stored grain is a common way to kill stored-grain insect pests. However, fumigating in unsealed structures is the leading cause of control failures and subsequent development of insect resistance. Sealing the storage structure is the only practical way to ensure a complete kill of all insects at all life stages. The cost, effort, and feasibility of sealing a U.S. corrugated steel silo during construction was evaluated and compared against an Australian sealed silo designed for fumigation. Gas monitoring and thermosiphon recirculation equipment was installed on both silos. Fumigation efficacy was evaluated using pressure half-life decay times, fumigant concentrations, insect bioassays, and grain quality data. Three fumigations with phosphine (PH₃) pellets or tablets and two with VAPORPH₃OS® cylinderized PH₃ and ProFume® cylinderized sulfuryl fluoride (SF) were performed in each silo for a total of ten experimental treatments. The Australian silo required 266 man-hours to construct and cost $180 for additional sealing, compared to 359 man-hours and $3,284 for constructing and sealing the U.S. silo. The Australian silo had a maximum pressure half-life decay time of 163 s versus 50 s for the U.S. silo. At application rates of 1.5 g/mᶟ of PH₃ both silos maintained an average concentration of approximately 0.28 g/mᶟ for 14 days. With thermosiphon recirculation the average minimum-to-maximum PH₃ concentration ratio in the U.S. silo was 0.52, compared to a ratio of 0.17 when fumigating without thermosiphon recirculation. Greater than 99% adult mortality was observed in all insect bioassays which included PH₃ resistant strains of R. dominica and T. castaneum. The average emergence from fumigated bioassays was 7 adult insects, compared to an average of 383 adults for the non-fumigated controls. Grain stored for 10 months in the sealed silos increased from approximately 11.5% to 17% m.c. in the top 0.3 m of grain, and decreased in test weight from approximately 77 to 65 kg/hL. Although the Australian silo retained higher fumigant concentrations than the U.S. silo, fumigations were successful in both. Long-term storage in sealed silos is a concern because grain quality can deteriorate due to condensation and mold in the top grain layer. Advisors/Committee Members: Dirk E. Maier.

Subjects/Keywords: Fumigation; Sealed Storage; Agriculture engineering; Grain storage; Phosphine resistance; Thermosiphon recirculation

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APA (6th Edition):

Cook, S. A. L. (2016). Evaluation of sealed storage silos for grain fumigation. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/32895

Chicago Manual of Style (16th Edition):

Cook, Samuel A L. “Evaluation of sealed storage silos for grain fumigation.” 2016. Masters Thesis, Kansas State University. Accessed October 17, 2019. http://hdl.handle.net/2097/32895.

MLA Handbook (7th Edition):

Cook, Samuel A L. “Evaluation of sealed storage silos for grain fumigation.” 2016. Web. 17 Oct 2019.

Vancouver:

Cook SAL. Evaluation of sealed storage silos for grain fumigation. [Internet] [Masters thesis]. Kansas State University; 2016. [cited 2019 Oct 17]. Available from: http://hdl.handle.net/2097/32895.

Council of Science Editors:

Cook SAL. Evaluation of sealed storage silos for grain fumigation. [Masters Thesis]. Kansas State University; 2016. Available from: http://hdl.handle.net/2097/32895

2. Romenique da Silva de Freitas. Qualidade de Grãos de Feijão Armazenados sob Atmosfera Modificada.

Degree: 2009, Universidade Federal Rural do Semi-Árido

The study was conducted at the Experimental Farm Rafael Fernandes, Mossoró city, Rio Grande do Norte State, Brazil, with the objective to verify the effect of irrigation levels and planting densities on the castor bean production, BRS ENERGIA. Thus, we used the experimental design in randomized blocks in a split-plot 5 x 2, with four replications. The treatments consisted of irrigation levels (0.6, 0.8, 1.0, 1.2 and 1.4 of ETc) in main plots and plant densities in the sub-plots formed by arrangements 1.50 m x 0.30 m x 0.30 m (D1 - 37,037 plants ha-1) and 1.50 m x 0.30 m x 0.40 m (D2 - 27,778 plants ha-1). The main plots were 18 m in length, 9 m for each of the densities. The irrigation levels were differentiated by the application time using the tubes, each of which had a strip of the water distribution system independent. The main bunches fruits income decreased with the applied levels and the secondary bunches income (in fruits and grains) followed quadratic polynomial model. How much to the total income, was gotten 3,974 kg ha-1 of fruits and 2,691 kg ha-1 of grains with irrigation based on 1,20 and 1,25 of the etc, respectively.

FREITAS, Romenique da Silva. Qualidade de grãos de feijão armazenados sob atmosfera modificada. Mossoró, UFERSA, 2009. 62 f. Dissertação (Mestrado em Agronomia: Fitotecnia) Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, 2009. Professor Orientador: D. Sc. Patrício Borges Maracajá. Co- orientador: Profa. D. Sc. Lêda Rita DAntonino Faroni. Conselheiros: Prof. D. Sc. Glauber Henrique de Sousa Nunes e Profa. D. Sc. Danila Kelly Pereira Neri. Este trabalho teve por objetivo avaliar a qualidade de grãos de feijão com diferentes teores de água, armazenados em condições herméticas, ao longo do armazenamento. O experimento foi realizado no Setor de Pré-Processamento e Armazenamento de Produtos Agrícolas do Departamento de Engenharia Agrícola da Universidade Federal de Viçosa (UFV). Foram utilizados grãos de feijão (Phaseolus vulgaris L.) do grupo vermelho, cultivar vermelhinho, com teores de água de 12,3, 15,7 e 17,8% b.u., produzidos na safra de inverno (2008), no município de Viçosa-MG. Os grãos foram acondicionados em embalagens herméticas e armazenados em câmara climática, por 0, 30, 60, 90 e 120 dias, à temperatura de 25 C e umidade relativa de 705%. No armazenamento foram utilizadas bolsas plásticas, impermeáveis com capacidade para três quilogramas e garrafas pet transparente com capacidade para 1,5 L. O delineamento utilizado foi o inteiramente casualizado, em esquema fatorial com parcelas subdivididas e três repetições, sendo as parcelas representadas pelo fatorial condição de armazenamento (silo tipo bolsa, garrafa pet e testemunha) e teor de água do grão (12,3, 15,7 e 17,8% b.u.) e as subparcelas representadas pelos períodos de armazenamento (0, 30, 60, 90 e 120 dias). Avaliou-se o teor de água, grau de infestação por insetos-praga, massa específica aparente, condutividade elétrica, percentual de germinação, tempo de cocção e classificação dos grãos, após cada período…

Advisors/Committee Members: Patrício Borges Maracajá.

Subjects/Keywords: Phaseolus vulgaris L.; hermetic storage; sealed storage system; grain quality; qualidade de grãos; silo bolsa; armazenamento hermético; Phaseolus vulgaris L.; FITOTECNIA

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

APA (6th Edition):

Freitas, R. d. S. d. (2009). Qualidade de Grãos de Feijão Armazenados sob Atmosfera Modificada. (Thesis). Universidade Federal Rural do Semi-Árido. Retrieved from http://bdtd.ufersa.edu.br/tde_busca/arquivo.php?codArquivo=55

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):

Freitas, Romenique da Silva de. “Qualidade de Grãos de Feijão Armazenados sob Atmosfera Modificada.” 2009. Thesis, Universidade Federal Rural do Semi-Árido. Accessed October 17, 2019. http://bdtd.ufersa.edu.br/tde_busca/arquivo.php?codArquivo=55.

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

MLA Handbook (7th Edition):

Freitas, Romenique da Silva de. “Qualidade de Grãos de Feijão Armazenados sob Atmosfera Modificada.” 2009. Web. 17 Oct 2019.

Vancouver:

Freitas RdSd. Qualidade de Grãos de Feijão Armazenados sob Atmosfera Modificada. [Internet] [Thesis]. Universidade Federal Rural do Semi-Árido; 2009. [cited 2019 Oct 17]. Available from: http://bdtd.ufersa.edu.br/tde_busca/arquivo.php?codArquivo=55.

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

Council of Science Editors:

Freitas RdSd. Qualidade de Grãos de Feijão Armazenados sob Atmosfera Modificada. [Thesis]. Universidade Federal Rural do Semi-Árido; 2009. Available from: http://bdtd.ufersa.edu.br/tde_busca/arquivo.php?codArquivo=55

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

.