Topic
Subsistence agriculture
About: Subsistence agriculture is a research topic. Over the lifetime, 8069 publications have been published within this topic receiving 156876 citations. The topic is also known as: subsistence farming.
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TL;DR: In this article, a strategy for in situ conservation of crop genetic resources whereby conservation efforts are linked to rural development projects in Third World countries is suggested for sustainable production by relying on the maintenance of biological and genetic diversity in these systems.
Abstract: A strategy is suggested for in situ conservation of crop genetic resources whereby conservation efforts are linked to rural development projects in Third World countries. We describe development projects that emphasize preservation of traditional farming systems and succeed in sustaining production by relying on the maintenance of biological and genetic diversity in these systems. Basing agricultural development efforts on indigenous knowledge, technology, and social organization can provide important guidelines for the design of cropping systems that allow lowincome farmers to produce subsistence and cash crops without dependence on external inputs and seed supplies. By incorporating landraces and wild relatives of crops into these cropping systems, major achievements in the conservation of crop genetic resources can be obtained.
378 citations
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TL;DR: In this article, the authors show that food expenditures can account for as much as 60-80% of total household income for low-income households in some parts of sub-Saharan Africa, and there is a need to significantly increase the productivity of subsistence/smallholder agriculture and ensure long-term food security.
Abstract: Poor households access their food from the market, subsistence production and transfers from public programmes or other households. In the past rural households produced most of their own food, but recent studies have shown an increase in dependence on market purchases by both urban and rural households, in some cases reaching 90% of the food supplies. Food expenditures can account for as much as 60–80% of total household income for low-income households in some parts of sub-Saharan Africa. Subsistence/smallholder agriculture can play an important role in reducing the vulnerability of rural and urban food-insecure households, improving livelihoods, and helping to mitigate high food price inflation. There is a need to significantly increase the productivity of subsistence/smallholder agriculture and ensure long-term food security. This can be achieved by encouraging farmers to pursue sustainable intensification of production through the use of improved inputs. This will require a dramatic increase...
375 citations
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TL;DR: In this article, the authors discuss a set of six constraints limiting the usefulness of forecasts: credibility, legitimacy, scale, cognitive capacity, procedural and institutional barriers, and available choices.
Abstract: For the last decade, climate scientists have improved their skill at predicting seasonal rainfall patterns in many parts of the world based on observations of sea surface temperatures. Making forecasts useful to decision-makers, especially subsistence farmers in developing countries, remains a significant challenge. In this paper, we discuss a set of six constraints limiting the usefulness of forecasts: credibility, legitimacy, scale, cognitive capacity, procedural and institutional barriers, and available choices. We identify how these constraints have in fact limited forecast use so far, and propose means of overcoming them. We then discuss a pilot project in Zimbabwe, where we test our proposals. Drawing from two years’ observation, we offer lessons to guide future efforts at effective forecast communication.
345 citations
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TL;DR: The authors proposed a general-equilibrium Roy model in which preferences feature a subsistence food requirement to induce workers that are relatively unproductive at agricultural work to nonetheless select into the agriculture sector in poor countries.
Abstract: Cross-country labor productivity differences are larger in agriculture than in non-agriculture. We propose a new explanation for these patterns in which the self-selection of heterogeneous workers determines sector productivity. We formalize our theory in a general-equilibrium Roy model in which preferences feature a subsistence food requirement. In the model, subsistence requirements induce workers that are relatively unproductive at agricultural work to nonetheless select into the agriculture sector in poor countries. When parameterized, the model predicts that productivity differences are roughly twice as large in agriculture as non-agriculture even when countries differ by an economy-wide efficiency term that affects both sectors uniformly. (JEL J24, J31, J43, O11, O13, O40)
341 citations
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TL;DR: In this paper, the authors summarized available literature on the biological and cultural significance of agro-biodiversity in home gardens and discussed future constraints and opportunities in home garden research, in the prospect of defining and promoting their role in conservation of agricultural biodiversity and cultural heritage.
Abstract: Over the last two decades, the importance of conserving genetic resources has received increasing attention. In this context the role of home gardens as repositories of biological diversity has been acknowledged but still a comprehensive, interdisciplinary investigation of their agro-biodiversity is lacking. Home gardens, whether found in rural or urban areas, are characterized by a structural complexity and multifunctionality which enables the provision of different benefits to ecosystems and people. Studies carried out in various countries demonstrate that high levels of inter- and intra-specific plant genetic diversity, especially in terms of traditional crop varieties and landraces, are preserved in home gardens. Families engage in food production for subsistence or small-scale marketing and the variety of crops and wild plants provides nutritional benefits. At the same time, home gardens are important social and cultural spaces where knowledge related to agricultural practices is transmitted and through which households may improve their income and livelihoods. The present article summarizes available literature on the biological and cultural significance of agro-biodiversity in home gardens. It discusses future constraints and opportunities in home garden research, in the prospect of defining and promoting their role in conservation of agricultural biodiversity and cultural heritage.
337 citations