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| Registros recuperados: 237 | |
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| Komarek, Adam M.; Waldron, Scott A.; Brown, Colin G.. |
| This paper develops a heterogeneous-agent model to assess the impacts of removing lucerne growing subsidies, increasing livestock numbers and including district-level equilibrium conditions on optimal farm plans in the Qingyang district of Gansu Province, China. The model is a five-year dynamic linear program that solves across 96 farm households whilst incorporating district-level constraints. The approach used allows us to observe seasonal variations in incomes, infer the distribution of a policy shock among households and highlight trade patterns at the district level. The results suggest that without lucerne growing subsidies the total area of lucerne grown by all modelled households falls by 18%. Increasing livestock numbers by 25% reduces net... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Heterogeneous-agent model; District-level constraints; Livestock; China.; Farm Management. |
| Ano: 2011 |
URL: http://purl.umn.edu/100573 |
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| BALBINO, L. C.; MARTINEZ, G. B.; GALERANI, P. R.. |
| Na iLPF os sistemas agrossilvipastoris, ao associar o componente árboreo às pastagens e às lavouras, adquirem importância, principalmente em regiões agropastoris com grande fragmentação de remanescentes florestais naturais e/ou com pastagens degradadas. A inclusão do componente árboreo ao da lavoura e da pastagem representa um avanço inovador da Integração Lavoura-Pecuária (iLP), evoluindo para o conceito de integração-Lavoura-Pecuária-Floresta (iLPF), estratégia de produção sustentável que integra atividades agrícolas, pecuárias e florestais, realizadas na mesma área, num cultivo consorciado, em sucessão ou rotação, buscando efeitos sinérgicos entre os componentes do agroecossistema, em busca da adequação ambiental, da valorização do homem e da... |
| Tipo: Livro técnico (INFOTECA-E) |
Palavras-chave: Transferência de tecnologia; Sistema de integração; Lavoura; Pecuária; Floresta; Agrossilvicultura; ILPF; Lavoura-pecuária-floresta; Farming systems; Forestry; Livestock; Technology transfer. |
| Ano: 2011 |
URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/921336 |
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| Davis, Rex; Tisdell, Clement A.. |
| Outlines economic threshold models developed by various authors as an aid to decision-making about pest management. Particular attention is given to the models proposed by Stern et al. (1959) and by Headley (1972) and the major differences in their concepts of the economic threshold. Limitations and scope for applying these models is discussed as well as differences in the extent of their applications are reviewed. After considering general issues in this respect, particular matters are given attention such as difficulties raised by complexities in the nature of yield loss function due to uncertainty in pest densities, the presence of multiple-pests, and the occurrence of pesticide resistance. An extension is provided for multiple species pest models to... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Pest control; Pest management; Livestock; Livestock Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/48381 |
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| Koo, Won W.; Duncan, Marvin R.; Taylor, Richard D.; Aakre, Dwight G.; Swenson, Andrew L.. |
| The analysis was conducted to evaluate the impacts of both the Federal Agricultural Improvement and Reform Act of 1996 (FAIR) and the cattle cycle on the livestock enterprises. The North Dakota Representative Farm and Ranch Model, which uses the Food and Agricultural Policy Research Institute price projections as an input, was developed and used for this analysis. Net farm income and farm debt-to-asset ratios for the average and large beef cattle farms were analyzed. The U.S. cattle industry has been characterized by cyclical variations in production and prices. It appears that the current cattle cycle is in the final stages of expansion. Cattle numbers continued to increase during 1995, but at a slow rate. Industry estimates are that the bottom of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Livestock; Representative farms; Cattle cycle; Production Economics. |
| Ano: 1996 |
URL: http://purl.umn.edu/23339 |
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| Seo, S. Niggol; Mendelsohn, Robert. |
| This paper uses a cross-sectional approach to analyze the impacts of climate change on animal husbandry and the way farmers adapt. The study is based on surveys of almost 5000 livestock farmers across ten countries in Africa. A traditional Ricardian regression finds that the livestock net revenues of large farms in Africa are more sensitive to temperature than those of small farms. Cross-sectional analysis also reveals that large farms (but not small farms) have fewer animals per farm in warmer places. Farmers tend to select beef cattle and chickens in cool climates and goats and sheep in hot climates. Using the Ricardian results and examining climate scenarios for 2060 and beyond, the net revenues of small farms are predicted to increase as much as 120%... |
| Tipo: Journal Article |
Palavras-chave: Climate change; Livestock; Impact; Adaptation; Africa; Livestock Production/Industries; Resource /Energy Economics and Policy; Q12; Q25. |
| Ano: 2008 |
URL: http://purl.umn.edu/56968 |
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| Registros recuperados: 237 | |
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