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Fertilizer Intensification and Soil Fertility Impact on Maize Yield Response in Northern Ghana

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  • Chapoto, Antony
  • Sabasi, Darlington
  • Asante-Addo, Collins

Abstract

Fertilizer use and intensity is low in Sub-Saharan Africa. Further, soil fertility has been declining over the years. These together have potentially been contributing to lower crop yields particularly for smallholder farmers. In this study we examine maize yield response to nitrogen in three Districts in Northern Ghana controlling for a number of covariates including soil fertility which have received less attention in the literature. Results show that soil fertility is crucial in increasing yields in Northern Ghana and increasing nitrogen per ha enhances maize yield up to a certain yield plateau beyond which further increases will not increase yields.

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  • Chapoto, Antony & Sabasi, Darlington & Asante-Addo, Collins, "undated". "Fertilizer Intensification and Soil Fertility Impact on Maize Yield Response in Northern Ghana," 2015 AAEA & WAEA Joint Annual Meeting, July 26-28, San Francisco, California 205694, Agricultural and Applied Economics Association.
    • Handle: RePEc:ags:aaea15:205694
    DOI: 10.22004/ag.econ.205694
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    References listed on IDEAS

    as
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    4. 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).
    5. Peter Berck & Gloria Helfand, 1990. "Reconciling the von Liebig and Differentiable Crop Production Functions," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 72(4), pages 985-996.
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    Keywords

    Agricultural and Food Policy; Crop Production/Industries; Production Economics; Productivity Analysis;
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