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Soil fertility, fertilizer, and the maize green revolution in East Africa

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  • Matsumoto, Tomoya
  • Yamano, Takashi

Abstract

This paper investigates the reasons for the low application of external fertilizers on farms in Kenya and Uganda. The analysis uses a large panel of household data with rich soil fertility data at the plot level. The authors control for maize seed selection and household effects by using a fixed-effects semi-parametric endogenous switching model. The results suggest that Kenyan maize farmers have applied inorganic fertilizer at the optimal level, corresponding to the high nitrogen-maize relative price, in one of the two survey years and also responded to the price change over time. In Uganda, even the low application of inorganic fertilizer is not profitable because of its high relative price. The authors conclude that policies that reduce the relative price of fertilizer could be effective in both countries, while the efficacy of policies based on improving farmers'knowledge about fertilizer use will be limited as long as the relative price of fertilizer remains high.

Suggested Citation

  • Matsumoto, Tomoya & Yamano, Takashi, 2009. "Soil fertility, fertilizer, and the maize green revolution in East Africa," Policy Research Working Paper Series 5158, The World Bank.
  • Handle: RePEc:wbk:wbrwps:5158
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    Citations

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    Cited by:

    1. Tomoya Matsumoto & Takashi Yamano & Dick Sserunkuuma, 2013. "Technology Adoption and Dissemination in Agriculture: Evidence from Sequential Intervention in Maize Production in Uganda," GRIPS Discussion Papers 13-14, National Graduate Institute for Policy Studies.
    2. Dethier, Jean-Jacques & Effenberger, Alexandra, 2012. "Agriculture and development: A brief review of the literature," Economic Systems, Elsevier, vol. 36(2), pages 175-205.
    3. Larson, Donald F. & Gurara, Daniel Zerfu, 2013. "A conceptual model of incomplete markets and the consequences for technology adoption policies in Ethiopia," Policy Research Working Paper Series 6681, The World Bank.
    4. Tomoya Matsumoto, 2013. "Disseminating New Farming Practices among Small Scale Farmers: An Experimental Intervention in Uganda," NBER Chapters,in: Experiments for Development: Achievements and New Directions National Bureau of Economic Research, Inc.
    5. Chapoto, Antony & Ragasa, Catherine, 2013. "Moving in the right direction? Maize productivity and fertilizer use and use intensity in Ghana:," IFPRI discussion papers 1314, International Food Policy Research Institute (IFPRI).

    More about this item

    Keywords

    Crops&Crop Management Systems; Climate Change and Agriculture; Climate Change Mitigation and Green House Gases; Fertilizers; Food Security;

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