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Off-farm Income and Fertilizer Investments by Smallholder Farmers in Kenya

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  • Mathenge, Mary K.
  • Smale, Melinda

Abstract

Nonfarm earnings from diverse sources account for a substantial and growing share of household income among smallholder farmers in many areas of Sub-Saharan Africa, but information about the effects of these earnings on farm investments is relatively sparse. This study focuses on fertilizer investments given the importance of soil fertility in raising crop productivity, the central role of fertilizer in most recommendations for managing soils, and the high cash cost of fertilizers. We use panel data from a sample of roughly 1200 smallholder farmers in Kenya to estimate input demand for fertilizer, testing the effects of off-farm income, as well as nonfarm income, income from labor on other farms, and all off-farm income combined. We compare effects among three types of crops: a major food staple (maize), and emerging cash crop (vegetables), and traditional export crops (coffee/tea). Demand functions are estimated with double hurdle regression, a Control Function approach to handle potential endogeneity of off-farm income, and Correlated Random Effects to treat time-invariant heterogeneity. We find that, holding prices, other crops grown, locational and relevant household characteristics constant, off-farm earnings have a negative impact on fertilizer use on both staple and emerging cash crops in Kenya, and a weak, positive effect on traditional cash crops. Nonfarm income explains most of this pattern, although the effects of labor on other farms are evident in the case of vegetables, which are relatively labor-intensive throughout the growing season. Results have implications for public investments in rural development as smallholders commercialize in Kenya.

Suggested Citation

  • Mathenge, Mary K. & Smale, Melinda, 2013. "Off-farm Income and Fertilizer Investments by Smallholder Farmers in Kenya," 2013 Fourth International Conference, September 22-25, 2013, Hammamet, Tunisia 161470, African Association of Agricultural Economists (AAAE).
  • Handle: RePEc:ags:aaae13:161470
    DOI: 10.22004/ag.econ.161470
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    1. Chamberlain, Gary, 1984. "Panel data," Handbook of Econometrics, in: Z. Griliches† & M. D. Intriligator (ed.), Handbook of Econometrics, edition 1, volume 2, chapter 22, pages 1247-1318, Elsevier.
    2. Mundlak, Yair, 1978. "On the Pooling of Time Series and Cross Section Data," Econometrica, Econometric Society, vol. 46(1), pages 69-85, January.
    3. Bezu, Sosina & Barrett, Christopher B. & Holden, Stein T., 2012. "Does the Nonfarm Economy Offer Pathways for Upward Mobility? Evidence from a Panel Data Study in Ethiopia," World Development, Elsevier, vol. 40(8), pages 1634-1646.
    4. Papke, Leslie E. & Wooldridge, Jeffrey M., 2008. "Panel data methods for fractional response variables with an application to test pass rates," Journal of Econometrics, Elsevier, vol. 145(1-2), pages 121-133, July.
    5. Smith, Richard J & Blundell, Richard W, 1986. "An Exogeneity Test for a Simultaneous Equation Tobit Model with an Application to Labor Supply," Econometrica, Econometric Society, vol. 54(3), pages 679-685, May.
    6. Marenya, Paswel Phiri & Barrett, Christopher B., 2009. "The effect of soil quality on fertilizer use rates among smallholder farmers in western Kenya," 2009 Conference, August 16-22, 2009, Beijing, China 51671, International Association of Agricultural Economists.
    7. Marenya, Paswel P. & Barrett, Christopher B., 2007. "Household-level determinants of adoption of improved natural resources management practices among smallholder farmers in western Kenya," Food Policy, Elsevier, vol. 32(4), pages 515-536, August.
    8. Benjamin Davis & Gero Carletto & Paul Winters, 2010. "Migration, Transfers and Economic Decision Making among Agricultural Households: an Introduction," Journal of Development Studies, Taylor & Francis Journals, vol. 46(1), pages 1-13.
    9. Paswel P. Marenya & Christopher B. Barrett, 2009. "Soil quality and fertilizer use rates among smallholder farmers in western Kenya," Agricultural Economics, International Association of Agricultural Economists, vol. 40(5), pages 561-572, September.
    10. Benjamin Davis & Paul Winters & Thomas Reardon & Kostas Stamoulis, 2009. "Rural nonfarm employment and farming: household‐level linkages," Agricultural Economics, International Association of Agricultural Economists, vol. 40(2), pages 119-123, March.
    11. Barrett, C. B. & Reardon, T. & Webb, P., 2001. "Nonfarm income diversification and household livelihood strategies in rural Africa: concepts, dynamics, and policy implications," Food Policy, Elsevier, vol. 26(4), pages 315-331, August.
    12. Bryceson, Deborah Fahy, 2002. "The Scramble in Africa: Reorienting Rural Livelihoods," World Development, Elsevier, vol. 30(5), pages 725-739, May.
    13. Mathenge, Mary K. & Tschirley, David L., 2008. "Off-Farm Work and Farm Production Decisions: Evidence from Maize-Producing Households in Rural Kenya," Working Papers 202609, Egerton University, Tegemeo Institute of Agricultural Policy and Development.
    14. Ahituv, Avner & Kimhi, Ayal, 2002. "Off-farm work and capital accumulation decisions of farmers over the life-cycle: the role of heterogeneity and state dependence," Journal of Development Economics, Elsevier, vol. 68(2), pages 329-353, August.
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