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| Registros recuperados: 14 | |
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| Lai, Jing-Yi; Myers, Robert J.; Hanson, Steven D.. |
| Most previous research on post-harvest grain storage by farmers has assumed risk-neutral behavior and/or made restrictive assumptions about underlying price probability distributions. In this study, we solve the optimal on-farm storage problem for a risk-averse farmer under more general assumptions about underlying price distributions. The resulting model is applied to Michigan corn farmers and findings show, contrary to the "sell all or nothing" risk-neutral rule, risk-averse farmers will spread sales out over the storage season. As farmers become more risk averse, the optimal strategy is to sell more grain at harvest and spread sales over the storage season, even though this practice reduces expected return. This result is more consistent with observed... |
| Tipo: Journal Article |
Palavras-chave: Grain storage; Risk aversion; Stochastic dynamic programming; Agribusiness. |
| Ano: 2003 |
URL: http://purl.umn.edu/31063 |
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| Buschena, David E.; Smith, Vincent H.; Di, Hua. |
| Market-oriented policy reforms often have important effects on farm-level grain production and utilisation decisions in developing countries. China’s grain farmers are of particular interest because of China’s importance in world grain markets and because of China’s recent major agricultural policy advances and retrenchments. An empirical evaluation of market liberalisation among farmers located in two provinces in China on farm-level wheat consumption, market sales and on-farm storage during 1994 is presented. The results indicate that policymakers should account for such changes in farm household behaviour in designing and assessing the consequence ofmarket liberalisation programs for agricultural sectors in developing countries. |
| Tipo: Article |
Palavras-chave: China; Grain storage; Household allocation decisions; Procurement quotas; Wheat; Crop Production/Industries. |
| Ano: 2005 |
URL: http://purl.umn.edu/118442 |
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| Buschena, David E.; Smith, Vincent H.; Di, Hua. |
| Market-oriented policy reforms have potentially important effects on farm-level grain production and utilization decisions in developing countries. This paper provides an empirical evaluation of the potential effects of market liberalization in China on farm-level wheat consumption, market sales, and on-farm storage. The results indicate that price changes have economically important impacts on utilization decisions by farm families through both income and substitution effects and that off- farm income also appears to be significant. The potential to earn off-farm income is also shown to be an important factor in grain utilization decisions. Storage is affected by government procurement policies as well as by more traditional food and income security... |
| Tipo: Working or Discussion Paper |
Palavras-chave: China; Wheat; Grain storage; Procurement quotas; Household allocation decisions; Agricultural and Food Policy; Q18. |
| Ano: 2000 |
URL: http://purl.umn.edu/29244 |
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| Saak, Alexander E.. |
| In a marketing environment, the demand conditions, the costs of shipping and storing grain varieties, the interest rate on farm loans, and the distribution of cropland in the area are important determinants of growers' planting decisions. In this article, I focus on a market for two quality-differentiated agricultural commodities: one produced with the use of biotechnology and the other, without. I develop a model for analyzing the equilibrium planting and marketing decisions made by geographically dispersed producers during the marketing year following harvest. I identify the types of marketing environments leading to a greater concentration of equilibrium acreage planted to a particular grain variety near the market and investigate the effects of the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Commodity prices; Grain storage; Location; Marketing; Product quality; Supermodularity; Crop Production/Industries. |
| Ano: 2003 |
URL: http://purl.umn.edu/18427 |
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| Jairoce,Carlos F.; Teixeira,Cristiano M.; Nunes,Camila F. P.; Nunes,Adrise M.; Pereira,Claudio M. P.; Garcia,Flávio R. M.. |
| ABSTRACT Bean weevil and maize weevil can cause considerable damage to stored grains. These insects are mainly controlled with synthetic chemical insecticides, which may bring serious problems to human and environmental health. Therefore, this study aimed to evaluate the efficiency of the essential oil of clove [Syzygium aromaticum (L.) Merrill & Perry (Myrtaceae) (origin: Bahia, season Sep.2014-Feb.2015)] in the control of S. zeamais and A. obtectus under laboratory conditions. The essential oil was extracted through the classic hydrodistillation process and its chemical components were identified via gas chromatography. Oil efficiency was tested at the doses of 35, 17.9, 8.9, 3.6, 1.8, 0.4 and 0.2 μL g-1 (derived from a pilot study) for insect... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Control strategies; Insect infestations; Grain storage. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100072 |
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| Viebrantz,Priscila C.; Radunz,Lauri L.; Dionello,Rafael G.. |
| ABSTRACT Due to the need to improve the quality and safety of foods, chemical methods used to control grain pests have been replaced by alternative methods. For example, modified atmosphere within the storage units has been used. Therefore, the objective was to evaluate maize grain quality and mortality of insects of the species Sitophilus zeamais and Tribolium castaneum in hermetic and non-hermetic environments for 50 days of storage. The hermetic units consisted of polyethylene "bags" with capacity for 60 kg. A cage with 20 adults of each species and 200 g of maize was placed inside each unit. The oxygen level was quantified every five days. Evaluations of insect mortality and survival occurred at 10, 20, 30, 40 and 50 days of storage. At 0, 30 and 50... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain storage; Modified atmosphere; Pest control; Fungal incidence; Density. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500487 |
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| Ceruti,Fabiane Cristina; Lazzari,Sonia Maria Noemberg. |
| The use of diatomaceous earth (DE) is a very efficient insect control measure in stored grain IPM due to its low cost, easy application, reduction of active ingredient residues, lower environmental contamination and operator safety. The objective of this research was to evaluate the efficacy of different dosages of DE mixed with powder deltamethrin for controlling Sitophilus zeamais in stored corn. Samples of 100 g of clean and dry corn, in three replicates, were submitted to the following treatments: DE (Keepdry®), at the dosages of 500, 750 and 1000 g/t; powder deltamethrin (K-Obiol®) at 0,5 g a.i. /t and 1,0 g a.i. /t; and combinations of the lowest and highest DE dosages with the two dosages of deltamethrin. Thirty adults of S. zeamais were placed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain storage; Inert dust; Insecticide; Sitophilus zeamais. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262005000400020 |
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| Di Domenico, Adriana Sbardelotto; Busso, Cleverson; Hashimoto, Elisabete Hiromi; Frata, Marcela Tostes; Christ, Divair; Coelho, Sílvia Renata Machado. |
| The aim of this study was to assess alternatives for viable corn storage for small rural properties in two annual storage experiments. A 4×5 factorial design was used with four types of storage (conventional bags, hermetic bags, metal silos and corncobs) and five periods of storage (0, 3, 6, 9 and 12 months). We used corn hybrids 2B688RR and 30K73Hx cultivated in winter 2012 and summer 2012/2013 in the city of Dois Vizinhos, Paraná, Brazil. The moisture contents, counts of Aspergillus sp. and Fusarium sp., and the occurrence of aflatoxins (B1, B2, G1 and G2) were assessed. The kernels stored in hermetic bags had lower moisture contents. Aspergillus sp. and Fusarium sp. were observed in 20.37 and 86.11% of winter storage samples, respectively, and in 83.3... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.03.03.02-3; 5.07.01.03-7 Armazenamento de Produtos Agrícolas/Microbiologia de Alimentos Zea mays L.; Fungi; Mycotoxins; Grain storage; Food safety Armazenamento de Produtos Agrícolas/Microbilogia Aplicada. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/25621 |
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| Ben Nasr, Rima; El Melki, Mohamed Nejib; El Moueddeb, Khaled; Kairouani, Lakdhar. |
| Cereal quality preservation is traditionally the accountability of grain storekeepers who count on profound knowledge discovered through scientific research. The main purpose of this research study was to predict the evolution of wheat temperature in unaerated silo during storage period under Tunisia climate. First, a bidimensional mathematical combined model (silo wall model + heat transfer model in grain bulk), which describes the distribution of the unsteady temperature in a cylindrical grain storage system, was presented and simulated using the parabolic solver incorporated in the Matlab 2015a environment. Mesh refinement at the shortest boundaries, including triangular elements, was adopted to simulate storage temperatures. In this numerical model,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain storage; Grain temperature; Wheat; Numerical study; Experimental study; Mediterranean climate. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7137 |
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| Registros recuperados: 14 | |
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