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An Analytical Model of Farmers' Demand for Replacement Seed

Author

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  • Paul W. Heisey
  • John P. Brennan

Abstract

Seed replacement choices differ from decisions about other inputs, such as fertilizer, because the farmer can reproduce seed. Assumptions about rates of improvement in yield potential and depreciation of retained seed are combined with behavioral assumptions and price and technical information to develop a model predicting the number of years before a farmer will buy new seed. Parameter estimates for wheat in Pakistan are fed into the model and results compared with observed replacement times. Time horizon strongly conditions effects of model parameters. To speed varietal change, better information for farmers is likely to be preferred to seed subsidies.

Suggested Citation

  • Paul W. Heisey & John P. Brennan, 1991. "An Analytical Model of Farmers' Demand for Replacement Seed," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 73(4), pages 1044-1052.
    • Handle: RePEc:oup:ajagec:v:73:y:1991:i:4:p:1044-1052.
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    File URL: http://hdl.handle.net/10.2307/1242432
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    Citations

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    Cited by:

    1. Julius Okello & Yuan Zhou & Ian Barker & Elmar Schulte-Geldermann, 2019. "Motivations and Mental Models Associated with Smallholder Farmers’ Adoption of Improved Agricultural Technology: Evidence from Use of Quality Seed Potato in Kenya," The European Journal of Development Research, Palgrave Macmillan;European Association of Development Research and Training Institutes (EADI), vol. 31(2), pages 271-292, April.
    2. Hartell, Jason G. & Smale, Melinda & Heisey, Paul W. & Senauer, Benjamin, 1997. "The Contribution of Genetic Resources and Diversity to Wheat Productivity: A Case from the Punjab of Pakistan," Economics Working Papers 7673, CIMMYT: International Maize and Wheat Improvement Center.
    3. Timo Goeschl & Timothy Swanson, 2003. "On Biology and Technology: The Economics of Managing Biotechnologies," Working Papers 2003.42, Fondazione Eni Enrico Mattei.
    4. Maredia, Mywish K. & Howard, Julie A. & Boughton, Duncan & Naseem, Anwar & Wanzala, Maria N. & Kajisa, Kei, 1999. "Increasing Seed System Efficiency in Africa: Concepts, Strategies and Issues," Food Security International Development Working Papers 54578, Michigan State University, Department of Agricultural, Food, and Resource Economics.
    5. Derek Eaton, 2013. "Innovation and IPRs in the Agricultural Seed Sector," CIES Research Paper series 19-2013, Centre for International Environmental Studies, The Graduate Institute.
    6. P. W. Heisey & K. A. Tetlay & Z. Ahmad & M. Ahmad, 1993. "Varietal Change In Post‐Green Revolution Agriculture: Empirical Evidence For Wheat In Pakistan," Journal of Agricultural Economics, Wiley Blackwell, vol. 44(3), pages 428-442, September.
    7. Melinda Smale & Joginder Singh & Salvatore Di Falco & Patricia Zambrano, 2008. "Wheat breeding, productivity and slow variety change: evidence from the Punjab of India after the Green Revolution ," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 52(4), pages 419-432, December.
    8. Smale, Melinda, 1996. "Understanding Global Trends in the Use of Wheat Diversity and International Flows of Wheat Genetic Resources," Economics Working Papers 7670, CIMMYT: International Maize and Wheat Improvement Center.
    9. Gerullis, Maria & Heckelei, Thomas & Rasch, Sebastian, 2020. "Towards understanding the governance of varietal and genetic diversity," 60th Annual Conference, Halle/ Saale, Germany, September 23-25, 2020 305589, German Association of Agricultural Economists (GEWISOLA).
    10. Gerullis, Maria & Heckelei, Thomas & Rasch, Sebastian, 2020. "Towards understanding the governance of varietal and genetic diversity," 60th Annual Conference, Halle/ Saale, Germany, September 23-25, 2020 305589, German Association of Agricultural Economists (GEWISOLA).
    11. Meng, Erika C.H. & Smale, Melinda & Rozelle, Scott & Ruifa, Hu & Huang, Jikun, 1999. "The Cost Of Wheat Diversity In China," 1999 Annual meeting, August 8-11, Nashville, TN 21580, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    12. Lybbert, Travis J., 2005. "Indian Farmers' Valuation of Crop Yield Distributions: Will poor farmers value 'pro-poor' seeds?," 2005 Annual meeting, July 24-27, Providence, RI 19160, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    13. Spielman, David J. & Smale, Melinda, 2017. "Policy options to accelerate variety change among smallholder farmers in South Asia and Africa South of the Sahara," IFPRI discussion papers 1666, International Food Policy Research Institute (IFPRI).
    14. Asadi, Hormoz & Zamanian, Gholamreza & Tash, Mohammad Nabi Shahiki & Ghorbani, Mohammad & Kamali, Mohammad Reza Jalal, 2017. "An Economic Analysis of Wheat Breeding Programs for Some Iranian Irrigated Bread Wheat Varieties," Agricultural Economics Review, Greek Association of Agricultural Economists, vol. 0(Issue 1), January.
    15. Lybbert, Travis J., 2006. "Indian farmers' valuation of yield distributions: Will poor farmers value `pro-poor' seeds?," Food Policy, Elsevier, vol. 31(5), pages 415-441, October.
    16. Nagarajan, Latha & Smale, Melinda, 2005. "Local seed systems and village-level determinants of millet crop diversity in marginal environments of India:," EPTD discussion papers 135, International Food Policy Research Institute (IFPRI).
    17. Robert Tripp & Suresh Pal, 2000. "Information and agricultural input markets: pearl millet seed in Rajasthan," Journal of International Development, John Wiley & Sons, Ltd., vol. 12(1), pages 133-144.
    18. Jaeck, Melanie & Lifran, Robert, 2011. "The Economic Determinants of the On-farm Management of Rice Cultivars in the Rhone River Delta (France)," 2011 Conference, August 25-26, 2011, Nelson, New Zealand 115508, New Zealand Agricultural and Resource Economics Society.

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