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Estimating the impact of innovation systems on maize yields: the case of Iar4d in southern Africa

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  • Shephard Siziba
  • Kefasi Nyikahadzoi
  • Joachim Binam Nyemeck
  • Aliou Diagne
  • Adekunle Adewale
  • Fatunbi Oluwole

Abstract

Markets are known to have a great potential to unlock agricultural growth in developing countries. The conventional agricultural research and development approaches used hitherto have not yielded much success in stimulating farmer participation in markets. New agricultural development approaches, such as the Integrated Agricultural Research for Development (IAR4D), view developmental challenges as multi-dimensional and as such require multi-pronged and integrated initiatives - better known as innovation systems - to overcome. Using data from IAR4D trials in Zimbabwe, Malawi and Mozambique, the study evaluates the efficacy of IAR4D in stimulating market integration and crop intensification. The impact of IAR4D on maize yield, estimated using the local average treatment effect (LATE) is significant in all the countries. Yields improved by margins ranging 107-149 kgha-super--1, which is quite substantial in a region where yields average around 1000kgha-super--1. These findings give credence to the proposition that innovation systems such as IAR4D are more effective in stimulating agricultural growth.

Suggested Citation

  • Shephard Siziba & Kefasi Nyikahadzoi & Joachim Binam Nyemeck & Aliou Diagne & Adekunle Adewale & Fatunbi Oluwole, 2013. "Estimating the impact of innovation systems on maize yields: the case of Iar4d in southern Africa," Agrekon, Taylor & Francis Journals, vol. 52(3), pages 83-100, September.
    • Handle: RePEc:taf:ragrxx:v:52:y:2013:i:3:p:83-100
    DOI: 10.1080/03031853.2013.821744
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    1. Joachim N. Binam & Frank Place & Arinloye A. Djalal & Antoine Kalinganire, 2017. "Effects of local institutions on the adoption of agroforestry innovations: evidence of farmer managed natural regeneration and its implications for rural livelihoods in the Sahel," Agricultural and Food Economics, Springer;Italian Society of Agricultural Economics (SIDEA), vol. 5(1), pages 1-28, December.
    2. Kolawole Ogundari & Bolarinwa Olufemi Daniel, 2018. "Working Paper 294 - Agricultural Innovations, Production, and Household Welfare in Africa," Working Paper Series 2421, African Development Bank.
    3. Taghouti, Ibtissem & Guesmi, Bouali & Salem, Hichem Ben & Laabidi, Sourour & Youssef, Salah Ben, 2021. "Perspectives of Adopting Technological Innovation in Livestock-Based Production System," 2021 Conference, August 17-31, 2021, Virtual 315285, International Association of Agricultural Economists.
    4. Maru, Yiheyis & Sparrow, Ashley & Stirzaker, Richard & Davies, Jocelyn, 2018. "Integrated agricultural research for development (IAR4D) from a theory of change perspective," Agricultural Systems, Elsevier, vol. 165(C), pages 310-320.
    5. Sparrow, Ashley D. & Traoré, Adama, 2018. "Limits to the applicability of the innovation platform approach for agricultural development in West Africa: Socio-economic factors constrain stakeholder engagement and confidence," Agricultural Systems, Elsevier, vol. 165(C), pages 335-343.

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