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	Provedor de dados AgEcon (8) Autor Erenstein, Olaf (8) Farooq, Umar (2) Laxmi, Vijay (2) Malik, R.K. (2) Sharif, Muhammad (2) Gupta, Raj K. (1) Singh, Sher (1) Mais... Palavra-chave Crop Production/Industries (6) Zero tillage (5) Rice (4) Wheat (4) Agricultural development (3) E16 (3) F08 (3) Farming systems (3) India (3) Production costs (3) Drilling equipment (2) Innovation adoption (2) Land Economics/Use (2) Pakistan (2) Production Economics (2) Resource /Energy Economics and Policy (2) Agribusiness (1) Agricultural and Food Policy (1) Agro-ecological gradient (1) Credit (1) Mais... Tipo do documento Report (4) Conference Paper or Presentation (3) Working or Discussion Paper (1) Ano 2009 (1) 2007 (4) 2006 (2) 1999 (1) País United States (8) Idioma Inglês (8)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 8 Primeira ... 1 ... Última Adoption and impacts of zero tillage as a resource conserving technology in the irrigated plains of South Asia AgEcon Erenstein, Olaf; Farooq, Umar; Malik, R.K.; Sharif, Muhammad. The recent stagnation of productivity growth in the irrigated areas of the Indo-Gangetic Plains of South Asia has led to a quest for resource-conserving technologies that can save water, reduce production costs and improve production. The present synthesis of two detailed country studies confirmed widespread adoption of zero tillage (ZT) wheat in the rice-wheat systems of India’s Haryana State (34.5% of surveyed households) and Pakistan’s Punjab province (19%). The combination of a significant “yield effect” and “cost-saving effect” makes adoption worthwhile and is the main driver behind the rapid spread and widespread acceptance of ZT in Haryana, India. In Punjab, Pakistan, adoption is driven by the significant ZT-induced cost savings for wheat... Tipo: Report Palavras-chave: Zero tillage; Rice; Wheat; Water conservation; India; Pakistan; Haryana; Punjab; Agribusiness; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Land Economics/Use; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy; Risk and Uncertainty. Ano: 2007 URL: http://purl.umn.edu/91816 Adoption and Impacts of Zero-Tillage in the Rice-Wheat Zone of Irrigated Haryana, India AgEcon Erenstein, Olaf; Malik, R.K.; Singh, Sher. This study documents the adoption and impacts of zero-tillage (ZT) wheat in the rice-wheat systems of India’s Haryana State primarily drawing on a detailed empirical survey of 400 rice-wheat farmers. Our random stratified sample revealed 34.5% to be ZT wheat adopters and a quarter of the wheat area in the surveyed communities to be under ZT. The study suggests the potential for further diffusion but also flags the issue of disadoption (10%). ZT adopters, non-adopters, and disadopters differ significantly in terms of their resource bases, with adopters typically showing the most favorable values. ZT drastically reduces tractor operations in farmers’ ZT wheat fields from an average of 8 passes to a single pass, implying a saving of 6 tractor hours and 36... Tipo: Report Palavras-chave: Wheat; Rice; Agricultural development; Innovation adoption; Drilling equipment; Farming systems; Zero tillage; Production costs; Credit; Income; India; Crop Production/Industries; E16; F08. Ano: 2007 URL: http://purl.umn.edu/56092 Adoption and Impacts of Zero-Tillage in the Rice-Wheat Zone of Irrigated Punjab, Pakistan AgEcon Farooq, Umar; Sharif, Muhammad; Erenstein, Olaf. This study documents the adoption and impacts of zero-tillage (ZT) wheat in the ricewheat systems of Pakistan’s Punjab province primarily drawing on a detailed empirical survey of 458 rice-wheat farmers. Our random stratified sample revealed 19% to be ZT wheat adopters and a similar share of the wheat area in the surveyed communities to be under ZT. The study suggests that diffusion has stagnated and also flags the issue of disadoption (14%). ZT adopters, non-adopters, and disadopters differ significantly in terms of their resource bases, with adopters typically showing the most favorable values. ZT drastically reduces tractor operations in farmers’ ZT wheat fields from an average of 8 passes to a single pass, implying a saving of 7 tractor hours and 35... Tipo: Report Palavras-chave: Wheat; Rice; Agricultural development; Drilling equipment; Economic analysis; Innovation adoption; Farming systems; Cropping patterns; Production costs; Zero tillage; Pakistan; Crop Production/Industries; E16; F08. Ano: 2007 URL: http://purl.umn.edu/56095 Assessing the Impact of International Natural Resource Management Research: The Case of Zero Tillage in India's Rice-Wheat Systems AgEcon Laxmi, Vijay; Erenstein, Olaf. A conservative ex-ante assessment of supply-shift gains alone (excluding social and environmental gains), shows that the investment in zero tillage (ZT) R&D by the Rice-Wheat Consortium and CIMMYT was highly beneficial with a benefit-cost ratio of 39, a net present value of US$ 94 million and an internal rate of return 57%. Sensitivity analysis highlights the influential role of the yield gain, the contribution of reduced tillage (i.e. partial adoption) and the assumed time-lag. Significant positive spillovers of sunk ZT R&D costs – both previous and from elsewhere - also contributed to the high returns. The case thereby highlights the potential gains from successful technology transfer and adaptation. The case however also underscores that... Tipo: Conference Paper or Presentation Palavras-chave: Natural resource management research; Impact assessment; Economic surplus; Zero tillage; Q11; Q12; Q16; Crop Production/Industries; Resource /Energy Economics and Policy. Ano: 2006 URL: http://purl.umn.edu/25694 Drivers and Modifiers of Lowland Use in West Africa AgEcon Erenstein, Olaf. Lowland development efforts in West Africa have a mixed record. The paper posits that this is due to the neglect of: (1) market opportunity as driving force for lowland use; and (2) the wider context within which lowlands are used as important modifier. The paper applies a regression-based decomposition framework to analyze the factors driving and modifying lowland use in West Africa. It uses community-level data from 1014 geo-referenced lowland units around four urban centers along an agro-ecological gradient in Cote d'Ivoire and Mali. Tobit models are used to explain the extent of lowland non-use (seasonal fallow), its diversity (in terms of rice and other crop cultivation) and its land use intensity (double cropping). Results highlight that proximity to... Tipo: Conference Paper or Presentation Palavras-chave: Urban - rural linkages; Market access; Agro-ecological gradient; West Africa; Lowland use; Peri-urban agriculture; O18; O3; Q15; Land Economics/Use. Ano: 2006 URL: http://purl.umn.edu/25288 Impact of Zero Tillage in India's Rice-Wheat Systems AgEcon Laxmi, Vijay; Erenstein, Olaf; Gupta, Raj K.. To date, the most widely adopted resource conserving technology (RCT) in the Indo-Gangetic Plains (IGP)has been zero-tillage (ZT) for wheat after rice, particularly in India. This report reviews and synthesizes the experience with zero tillage in the Indian IGP. Zero tillage of wheat after rice generates significant benefits at the farm level, both in terms of significant yield gains (6–10%, particularly due to timelier planting of wheat) and cost savings (5–10%, particularly tillage savings). These benefits explain the widespread interest of farmers and the rapidity of the diffusion across the Indian IGP, further aided by the wide applicability of this mechanical innovation. The study subsequently reports on the findings of village-level focus-group... Tipo: Report Palavras-chave: Wheat; Rice; Agricultural development; Zero tillage; Farming systems; Rotational cropping; Water use; Environmental factors; Production costs; India; Crop Production/Industries; E16; F08. Ano: 2007 URL: http://purl.umn.edu/56093 La conservacion de residuos en los sistemas de produccion de maíz en Ciudad Guzman y San Gabriel, Jalisco AgEcon Erenstein, Olaf. La tecnología de conservación de los residuos del cultivo, mejor conocida como labranza de conservación, brinda la posibilidad de incrementar la productividad y la sustentabilidad de los sistemas agrícolas en zonas con escasez de agua. La tecnología propone el uso de los residuos de la cosecha anterior como mantillo protector del suelo, con el propósito de lograr efectos benéficos en la conservación del suelo y del agua. Este estudio revisa el potencial de la tecnología en los sistemas de producción de maíz de temporal en una zona de estudio en el sureste del estado de Jalisco, México. La adopción actual de la tecnología en la zona de estudio es mínima (aproximadamente 1%), aunque una tercera parte de los productores sí la conoce. El estudio muestra que la... Tipo: Working or Discussion Paper Palavras-chave: Crop Production/Industries. Ano: 1999 URL: http://purl.umn.edu/7685 Resource scarcity gradients in the post-Green Revolution Indo-Gangetic Plains: Implications for agricultural technology use and supply AgEcon Erenstein, Olaf. The Green Revolution converted the Indo-Gangetic Plains (IGP) into South Asia’s cereal basket. The recent slow down in cereal productivity growth and continuing poverty in the IGP pose a major challenge to agricultural research and development. To address this challenge it merits revisiting the resource scarcities that farmers actually face across the vast IGP. The paper uses a rapid primary data collection effort through village surveys in 12 clusters along an agro-ecological gradient in the Indian IGP to complement secondary data. The results show marked gradients in factor ratios and factor prices in the Indian IGP. Labor:land factor ratios and price ratios alone can thereby be misleading as they fail to capture the increasingly important role of... Tipo: Conference Paper or Presentation Palavras-chave: Relative factor scarcity; Spatial gradients; R&D implications; Agricultural and Food Policy; Production Economics; Research and Development/Tech Change/Emerging Technologies. Ano: 2009 URL: http://purl.umn.edu/51569 Registros recuperados: 8 Primeira ... 1 ... Última

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