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| Registros recuperados: 224 | |
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| Cecílio Filho,Arthur B.; Rezende,Bráulio L.A.; Barbosa,José C.; Grangeiro,Leilson C.. |
| Four experiments were carried out at the São Paulo State University, Brazil, with the aim of determining the agronomic viability of intercropping tomato and lettuce, under greenhouse conditions. The studied intercropping systems were established by transplanting lettuce at 0, 10, 20 and 30 days after transplanting (DAT) tomato and by transplanting tomato at 0, 10, 20 and 30 DAT lettuce. Intercropped tomato and lettuce were evaluated during two seasons and compared to their sole cropping. The experimental design was a randomized complete block with nine treatments. The productivity and the classification of the tomato fruits were not influenced by having lettuce intercropped with it, but lettuce production was lowered when tomato was intercropped with it.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cropping systems; Greenhouse; Lactuca sativa; Solanum lycopersicon; Planting time. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300029 |
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| Farrell, Terence C.. |
| Economic benefits that arise from conservation farming practices need to be assessed over several years to account for improvements in soil structure and nutrient levels. A gross margin model was used to assess benefits over the eight-year period 1999-2006 for 12 regions in the central west of NSW. The annual benefits from improved soil structure ranged from $2.46 to $12.82 per hectare (ha). A reduction in tractor power produced annual savings in the range of $0.60 to $4.05 per ha. The cost of soil compaction by livestock grazing on crop areas ranged from $3.41 to $14.90 per ha. The break-even time to pay back costs for the conversion of machinery for no-till seeding was two to three seasons. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: No-till; Conservation; Farming; Tillage; Cropping systems; Environmental Economics and Policy; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/6177 |
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| Chan, Stephanie; Caldwell, Brian; Rickard, Bradley J.. |
| This paper provides an economic analysis that compares the profitability and land management capability of four different organic cropping systems used to produce winter squash (Cucurbita pepo cv. ‘Delicata’) and cabbage (Brassica oleracea var. capitata cv.’ Farao’). The organic cropping systems are part of a long term experiment designed for vegetable production in the Northeast, and designed to maintain ecological integrity and contribute to environmental stewardship. Our research addresses the causal chain from soil processes to economic outcomes including soil quality, efficiency in cycling of nutrients, off-farm impacts, pressures from weeds, insects and diseases, crop yield and quality, and marketing opportunities. Interactive crop budgets were... |
| Tipo: Working Paper |
Palavras-chave: Cropping systems; Economic analysis; Organic production; Sustainable agriculture; Vegetables.; Farm Management. |
| Ano: 2010 |
URL: http://purl.umn.edu/121652 |
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| Hignight, Jeffrey A.; Watkins, K. Bradley; Anders, Merle M.. |
| No-till (NT) has been shown to reduce fuel, labor, and machinery costs compared to conventional-till (CT) but very few rice producers in Arkansas practice NT. The low adoption rate is most likely due to difficulties in management but also limited information on the profitability and risk of NT. Most rice producers are knowledgeable on NT costs savings but consider it less profitable due to yield reductions offsetting costs savings. This study evaluates production costs, crop yields, and economic risk of both NT and CT in five rice-based cropping systems (continuous rice, rice-soybean, rice-corn, rice-wheat, and rice-wheat-soybean-wheat). Yields, crop prices, and key input prices are simulated to create net return distributions. Stochastic efficiency... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Cropping systems; Rice; No-till; Certainty equivalent; Risk premium; Crop Production/Industries; Farm Management; Financial Economics; Land Economics/Use; Production Economics; Risk and Uncertainty. |
| Ano: 2010 |
URL: http://purl.umn.edu/56354 |
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| MOURA, G. de M.; LODI, N. V.. |
| As vantagens da associação de duas culturas são regidas por princípios fundamentais que incluem fatores fisiológicos, genéticos, nutricionais e econômicos, entre outros. A maior eficiência de alguns sistemas de policultivo, em comparação com as respectivas culturas exclusivas, é explicada com base no fenômeno da "anidação", a qual é conceituada como sendo a utilização dos fatores ambientais pelos componentes do consórcio, de modo que não haja competição no uso desses recursos, ou seja, ocorre uma complementariedade no aproveitamento dos mesmos. |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Cultivo mixto; Oriza sativa; Maiz; Rendimiento de los cultivos.; Sistema de cultivo; Consorciação de cultura; Rendimento; Arroz; Milho; Zea mays.; Cropping systems; Mixed cropping; Rice; Corn; Crop yield.. |
| Ano: 1983 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492325 |
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| Registros recuperados: 224 | |
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