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| Registros recuperados: 84 | |
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| Crawford, Eric W.; Jayne, Thomas S.; Kelly, Valerie A.. |
| This paper outlines the role of improved soil fertility in the process of structural transformation, and examines specific financial, economic, social, and political arguments in favor of promoting increased fertilizer use, particularly in smallholder farming systems. This paper draws experiences and insights from the literature on which policies and programs appear to work best and which least well in providing a consistent and growing supply of fertilizer to smallholders. Particular attention is given to addressing the question of fertilizer subsidies: Under what circumstances are they warranted and what form should they take, if and when they are implemented? |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 2005 |
URL: http://purl.umn.edu/11557 |
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| Weight, David; Kelly, Valerie A.. |
| Successful agricultural development has resulted in substantial alleviation of poverty and food security in Asia and Latin America since the 1960s. Much of this success can be attributed to the introduction of high-yielding varieties of crops, especially wheat and rice, which have addressed the constraints faced by farmers using traditional varieties. In Sub-Saharan Africa (SSA), however, productivity levels have remained stagnant despite the introduction of new crop germplasm. In recent years, scientists have recognized that low soil fertility is the primary constraint blocking agricultural development in SSA. Major findings from this study may be summed up in five key points. Declining fertility and SOM in SSA are a result primarily of... |
| Tipo: Report |
Palavras-chave: Crop Production/Industries; Land Economics/Use; Downloads May 2008 - June 2009: 110. |
| Ano: 1999 |
URL: http://purl.umn.edu/54050 |
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| Kelly, Valerie A.. |
| This study presents a critical analysis of procedures currently used to estimate the opportunity costs of unskilled labor in developing countries. The issue is particularly germane today. Economic analysis is playing an increasingly important role in most developing country agricultural and industrial production. Many labor markets, however, remain relatively thin and subject to a variety of market distortions which render the job of the economic analyst extremely difficult. In light of these conditions, this research aims to accomplish the following three objectives: 1) To critically evaluate methods currently used for estimating opportunity costs of labor and the adherence of these methods to the underlying dictates of economic theory; 2) To... |
| Tipo: Thesis or Dissertation |
Palavras-chave: Labor and Human Capital. |
| Ano: 1984 |
URL: http://purl.umn.edu/11256 |
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| Howard, Julie A.; Jeje, Jose Jaime; Kelly, Valerie A.; Boughton, Duncan. |
| This paper summarizes the results from data collected during the study’s second year, 1997/98. The analysis is based on a sample of 210 smallholder farmers in Nampula Province using three different sets of production practices: the DNER/Sasakawa- Global 2000 Program (DNER/SG) high-input package (improved open-pollinated maize, 100 kg/ha each 12-24-12 and urea fertilizer on credit); improved planting and weeding practices only (using local seed, without fertilizer); and a control group of farmers using traditional practices (no improved seed or fertilizer). The objectives of the research were to: describe the characteristics, input use patterns and yield response by group; analyze the relative contribution to yield of the different technologies,... |
| Tipo: Report |
Palavras-chave: Food security; Food policy; Mozambique; Maize; Crop Production/Industries; Q18. |
| Ano: 2000 |
URL: http://purl.umn.edu/55217 |
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| Kelly, Valerie A.; Tefft, James F.; Oehmke, James F.; Staatz, John M.. |
| The paper uses OLS and Logit analyses of household survey data to identify and compare determinants of the health and nutritional status of Malian children living in three distinct agricultural production zones (cotton, millet/sorghum, and irrigated rice). These preliminary results suggest that improvements in health center coverage (e.g., reducing the average distance to a health center from 20 to 10 kilometers) and more diversity in complementary foods after six months of age (two or more different foods during a 24 hour period) have the potential to significantly improve standardized height for age scores. Other factors of importance are mother's incomes, prenatal visits, and parents' standardized heights (reflecting either genetic traits or generations... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Food Consumption/Nutrition/Food Safety. |
| Ano: 2004 |
URL: http://purl.umn.edu/11528 |
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| Registros recuperados: 84 | |
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