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Labor-savings of Roundup Ready Maize: Impact on Cost and Input Substitution for South African Smallholders

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  • Regier, Gregory K.
  • Dalton, Timothy J.

Abstract

This study examines the impact of genetically modified maize on labor, cost, and input substitutability for smallholders in South Africa. Data was collected during the 2009- 2010 maize production season from 184 households with a total of 212 maize plots in two regions, Hlabisa and Simdlangetsha, located in KwaZulu-Natal, South Africa. Producers of Roundup Ready® (RR) maize use significantly less child, female, and male labor than non- RR producers, resulting in lower costs in spite of significantly higher herbicide, seed, and fertilizer prices. An unrestricted cost function approach is used to evaluate the differences in cost between maize varieties, assuming that households use different input allocations to minimize cost while producing a fixed level of output. A treatment effects model used to control for selection bias shows that the entire cost advantage and more can be attributed to the Roundup Ready® technology. The treatment effects model reveals that RR maize producers have $102.44 (30%) lower costs per maize plot after taking into consideration the inverse Mills ratio, suggesting that the OLS model underestimated the cost-reducing effect of RR maize. Therefore, the entire cost advantage and more can be attributed to RR maize after isolating the effect of RR maize on total cost by disentangling the lower costs attributed to RR maize from those associated with farm and farmer characteristics. These results are confirmed using a nonparametric kernel density estimator. Elasticities of factor substitution indicate strong substitutability among inputs; however, lack of statistical significance limits interpretation of results.

Suggested Citation

  • Regier, Gregory K. & Dalton, Timothy J., 2013. "Labor-savings of Roundup Ready Maize: Impact on Cost and Input Substitution for South African Smallholders," 2013 Fourth International Conference, September 22-25, 2013, Hammamet, Tunisia 160521, African Association of Agricultural Economists (AAAE).
    • Handle: RePEc:ags:aaae13:160521
    DOI: 10.22004/ag.econ.160521
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    1. Christopher B. Barrett & Christine M. Moser & Oloro V. McHugh & Joeli Barison, 2004. "Better Technology, Better Plots, or Better Farmers? Identifying Changes in Productivity and Risk among Malagasy Rice Farmers," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 86(4), pages 869-888.
    2. Timothy J. Dalton & William A. Masters & Kenneth A. Foster, 1997. "Production costs and input substitution in Zimbabwe's smallholder agriculture," Agricultural Economics, International Association of Agricultural Economists, vol. 17(2-3), pages 201-209, December.
    3. Smale, Melinda & Byerlee, Derek & Jayne, Thom S., 2011. "Maize Revolutions in Sub-Saharan Africa," Working Papers 202592, Egerton University, Tegemeo Institute of Agricultural Policy and Development.
    4. Nigel Key & William McBride, 2003. "Production Contracts and Productivity in the U.S. Hog Sector," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 85(1), pages 121-133.
    5. Pray, Carl E. & Rheeder, John & Gouse, Marnus & Volkwyn, Yvette & van der Westhuizen, Liana & Shephard, Gordon, 2009. "Can Bt Maize Reduce Exposure to the Mycotoxin Fumonisin in South Africa?," 2009 Conference, August 16-22, 2009, Beijing, China 51739, International Association of Agricultural Economists.
    6. Gouse, Marnus & Piesse, Jenifer & Thirtle, Colin G., 2006. "Monsanto's Adventures in Zulu Land: Output and Labour Effects of GM Maize and Minimum Tillage," 2006 Annual Meeting, August 12-18, 2006, Queensland, Australia 25309, International Association of Agricultural Economists.
    7. Mutuc, Maria Erlinda M. & Rejesus, Roderick M. & Pan, Suwen & Yorobe, Jose M., 2012. "Impact Assessment of Bt Corn Adoption in the Philippines," Journal of Agricultural and Applied Economics, Cambridge University Press, vol. 44(1), pages 117-135, February.
    8. Tumusiime, Emmanuel & De Groote, Hugo & Vitale, Jeffrey D. & Adam, Brian D., 2009. "The Cost of Coexistence between Bt Maize and Open Pollinated Maize Varieties in Lowland Coastal Kenya," 2009 Annual Meeting, January 31-February 3, 2009, Atlanta, Georgia 46726, Southern Agricultural Economics Association.
    9. Blackorby, Charles & Russell, R Robert, 1989. "Will the Real Elasticity of Substitution Please Stand Up? (A Comparison of the Allen/Uzawa and Morishima Elasticities)," American Economic Review, American Economic Association, vol. 79(4), pages 882-888, September.
    10. Hans P. Binswanger, 1974. "A Cost Function Approach to the Measurement of Elasticities of Factor Demand and Elasticities of Substitution," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 56(2), pages 377-386.
    11. Mutuc, Maria Erlinda M. & Pan, Suwen & Rejesus, Roderick M. & Yorobe, Jose M., Jr., 2007. "Farm Level Impacts of Bt Corn Adoption in a Developing Country: Evidence from the Philippines," 2007 Annual Meeting, July 29-August 1, 2007, Portland, Oregon 9891, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    12. Chambers,Robert G., 1988. "Applied Production Analysis," Cambridge Books, Cambridge University Press, number 9780521314275, October.
    13. Just, Richard E., 2000. "Some Guiding Principles for Empirical Production Research in Agriculture," Agricultural and Resource Economics Review, Cambridge University Press, vol. 29(2), pages 138-158, October.
    14. Robert N. Horn, 1988. "Analysis," Challenge, Taylor & Francis Journals, vol. 31(4), pages 56-58, July.
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    1. Gouse, Marnus & Sengupta, Debdatta & Zambrano, Patricia & Zepeda, José Falck, 2016. "Genetically Modified Maize: Less Drudgery for Her, More Maize for Him? Evidence from Smallholder Maize Farmers in South Africa," World Development, Elsevier, vol. 83(C), pages 27-38.
    2. Ardinesh Kambanje & Saul Ngarava & Abyssinia Mushunje & Amon Taruvinga, 2018. "Labour Dynamics in Climate and Techno Reliant Small Scale Maize Production," Journal of Economics and Behavioral Studies, AMH International, vol. 10(4), pages 262-276.

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