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Counterfeit Herbicides And Farm Productivity In Mali: A Multivalued Treatment Approach

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  • Assima, Amidou
  • Haggblade, Steven
  • Smale, Melinda

Abstract

Rapid growth in private sector herbicide imports has led to a dramatic rise in use of commercial herbicides by Malian smallholder farmers. Given weak regulatory capacity to monitor markets, the recent proliferation in herbicide products and brands has been accompanied by widespread sales of unregistered products. We test the effects of herbicides applied to Mali’s major dryland cereals, sorghum and maize, on yield and labor productivity, differentiated by gender and age. We employ a multivalued treatment model with data collected from 623 households and 1273 plots. Findings show negative effects of unregistered herbicides on yields. In contrast, the use of registered herbicides enhances labor productivity of adult male and children. However, we find no significant effects on registered herbicides on yields or labor productivity of women.

Suggested Citation

  • Assima, Amidou & Haggblade, Steven & Smale, Melinda, 2017. "Counterfeit Herbicides And Farm Productivity In Mali: A Multivalued Treatment Approach," Feed the Future Innovation Lab for Food Security Policy Research Papers 259563, Michigan State University, Department of Agricultural, Food, and Resource Economics, Feed the Future Innovation Lab for Food Security (FSP).
    • Handle: RePEc:ags:miffrp:259563
    DOI: 10.22004/ag.econ.259563
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    References listed on IDEAS

    as
    1. Steven Haggblade & Melinda Smale & Alpha Kergna & Veronique Theriault & Amidou Assima, 2017. "Causes and Consequences of Increasing Herbicide Use in Mali," The European Journal of Development Research, Palgrave Macmillan;European Association of Development Research and Training Institutes (EADI), vol. 29(3), pages 648-674, July.
    2. Cattaneo, Matias D., 2010. "Efficient semiparametric estimation of multi-valued treatment effects under ignorability," Journal of Econometrics, Elsevier, vol. 155(2), pages 138-154, April.
    3. Svensson, Jakob & Yanagizawa-Drott, David & Bold, Tessa & Kaizzi, Kayuki, 2015. "Low Quality, Low Returns, Low Adoption: Evidence from the Market for Fertilizer and Hybrid Seed in Uganda," CEPR Discussion Papers 10743, C.E.P.R. Discussion Papers.
    4. Matias D. Cattaneo, 2010. "multi-valued treatment effects," The New Palgrave Dictionary of Economics,, Palgrave Macmillan.
    5. Ashour, Maha & Billings, Lucy & Gilligan, Daniel & Hoel, Jessica B. & Karachiwalla, Naureen, 2016. "Do beliefs about agricultural inputs counterfeiting correspond with actual rates of counterfeiting? Evidence from Uganda:," IFPRI discussion papers 1552, International Food Policy Research Institute (IFPRI).
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    Cited by:

    1. Steven Haggblade & Bart Minten & Carl Pray & Thomas Reardon & David Zilberman, 2017. "The Herbicide Revolution in Developing Countries: Patterns, Causes, and Implications," The European Journal of Development Research, Palgrave Macmillan;European Association of Development Research and Training Institutes (EADI), vol. 29(3), pages 533-559, July.
    2. Steven Haggblade & Melinda Smale & Alpha Kergna & Veronique Theriault & Amidou Assima, 2017. "Causes and Consequences of Increasing Herbicide Use in Mali," The European Journal of Development Research, Palgrave Macmillan;European Association of Development Research and Training Institutes (EADI), vol. 29(3), pages 648-674, July.
    3. Steven Haggblade & Amadou Diarra & Abdramane Traoré, 2022. "Regulating agricultural intensification: Lessons from West Africa’s rapidly growing pesticide markets," Development Policy Review, Overseas Development Institute, vol. 40(1), January.

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    Keywords

    Agricultural and Food Policy; Food Security and Poverty; International Development; Research Methods/ Statistical Methods;
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