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Agricultural total factor productivity growth, technical efficiency, and climate variability in sub-Saharan Africa

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  • Bannor, Frank
  • Dikgang, Johane
  • Gelo, Dambala

Abstract

Despite continuous reforms and increased spending in the agricultural sector, Africa remains a net food importer. Previous research has argued that agricultural productivity is lower in Africa than in all other parts of the world due to challenging ecological conditions – soil fertility challenges and extreme climate. Increasing the region’s food supply requires significant increases in agricultural productivity, which in turn depends on investment in research and development (R&D). This study examines how climate variability (proxied by rainfall variability) affects agricultural total factor productivity (TFP) of maize in 14 sub-Saharan African countries (SSA). Maize farming in Africa – due to its significance in regional food production, evident climate variability, and the need to significantly increase efficiency – is an ideal region of investigation for climate impacts on maize production. We apply a Data Envelopment Analysis (DEA) on the Malmquist Productivity Index (MPI) to decompose productivity growth into technical efficiency and technological progress. In addition, a single-stage maximum-likelihood estimation of a true fixed effect was used to investigate how climate variability affects maize productivity through technical efficiency. The results show that climate variability has a negative effect on technical efficiency in the agricultural production of maize. Furthermore, increased spending on R&D is required to enhance technical efficiency and productivity.

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  • Bannor, Frank & Dikgang, Johane & Gelo, Dambala, 2021. "Agricultural total factor productivity growth, technical efficiency, and climate variability in sub-Saharan Africa," EconStor Preprints 231310, ZBW - Leibniz Information Centre for Economics.
    • Handle: RePEc:zbw:esprep:231310
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    More about this item

    Keywords

    climate change; data envelopment analysis; maize; total factor productivity; research and development; technical efficiency;
    All these keywords.

    JEL classification:

    • Q1 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture
    • Q5 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics

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