Hugo De Groote () (International Maize and Wheat Improvement Centre (CIMMYT)) George Owuor (Egerton University, Njoro, Kenya) Cheryl Doss (Yale Center for International and Area Studies) James Ouma (Kenya Agricultural Research Institute (KARI), Embu, Kenya) Lutta Muhammad (Kenya Agricultural Research Institute (KARI), Katuman, Kenya) K. Danda (Kenya Agricultural Research Institute (KARI), Mtwap, Kenya)
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The maize green revolution, which increased maize yields through the use of improved varieties and fertilizer, has stalled since the mid-eighties in Kenya. This paper examines whether the stagnation of yields continued in the 1990s in spite of the implementation of the maize liberalization policies by the Kenya Government. Analysis of farm level surveys from 1992 and 2002 indicates slight increases in the use of improved maize varieties and fertilizer, but a substantial decrease in the intensity of fertilizer use. The econometric analysis suggests that the intensity of fertilizer use has a major effect on yield. The use of improved maize varieties, however, did not affect yield, suggesting that there are local varieties for some areas that do as well as improved varieties. Research is needed to develop improved varieties for some areas, and also needed for the development of alternative affordable soil fertility measures.
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Find related papers by JEL classification: Q10 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - General Q16 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - R&D; Agricultural Technology; Agricultural Extension Services
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