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Can conservation agriculture save tropical forests? The case of minimum tillage in Zambia

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  • Ngoma, Hambulo
  • Angelsen, Arild

Abstract

Minimum tillage (MT) is a key component in the promotion of conservation agriculture (CA). This paper asks whether MT reduces cropland expansion and thus deforestation. We develop a theoretical household model of land expansion, and test hypotheses by estimating a double hurdle model using household survey data from 368 smallholders in rural Zambia. About 19% of the farmers expanded cropland into forests, clearing an average of 0.14 ha over one year. Overall, we do not find significant associations between MT adoption and reduced deforestation among households in our sample, while higher labor availability and crop yield stimulate expansion. Yield augmenting agricultural technologies (such as MT) may not reduce expansion unless combined with other forest conservation measures.

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  • Ngoma, Hambulo & Angelsen, Arild, 2018. "Can conservation agriculture save tropical forests? The case of minimum tillage in Zambia," Forest Policy and Economics, Elsevier, vol. 97(C), pages 153-162.
    • Handle: RePEc:eee:forpol:v:97:y:2018:i:c:p:153-162
    DOI: 10.1016/j.forpol.2018.10.001
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    More about this item

    Keywords

    Cropland expansion; Deforestation; Minimum tillage; Double hurdle; Zambia;
    All these keywords.

    JEL classification:

    • D13 - Microeconomics - - Household Behavior - - - Household Production and Intrahouse Allocation
    • Q12 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets
    • Q23 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Forestry

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