Technology Adoption in Agriculture: Evidence from Experimental Intervention in Maize Production in Uganda

  • Tomoya Matsumoto
  • Takashi Yamano
  • Dick Sserunkuuma


To investigate the impact of a policy intervention on technology adoption by small scale farmers, we conducted sequential field experiments on maize production in Uganda in 2009, in which we provided a free maize start-up package to sample farmers in randomly selected villages. Subsequently, we conducted a sales experiment in each of the treatment and control villages involving all the sample households and their randomly selected neighbors in the treatment villages. The findings of this study suggest that the distribution of modern agricultural inputs has a significantly positive effect on their adoption by farmers who have little experience in their use. We also find a large impact of the credit intervention and significant spillover effects. In short, a small-scale intervention could have a large impact on farmers’ demand for modern inputs and maize yield.


Technology adoption Experimental intervention Maize production Uganda Green Revolution High yielding varieties Chemical fertilizer Input subsidy Small scale farmers 


  1. Conley T, Udry C (2001) Social learning through network: the adoption of new agricultural ­technology in Ghana. Am J Agric Econ 83(3):668–673CrossRefGoogle Scholar
  2. Denning G, Kabambe P, Sanchez P, Malik A, Flor R et al (2009) Input subsidies to improve smallholder maize productivity in Malawi: toward an African Green Revolution. PLoS Biol 7(1) at
  3. Duflo E, Kremer M, Robinson J (2008) How high are rates of return to fertilizer? Evidence from field experiments in Kenya. Am Econ Rev 98(2):482–488CrossRefGoogle Scholar
  4. Duflo E, Kremer M, Robinson J (2009) Nudging farmers to use fertilizer: evidence from Kenya, vol 15131, NBER working paper. National Bureau of Economic Research, Cambridge, MACrossRefGoogle Scholar
  5. Evenson RE, Gollin D (2003) Crop variety improvement and its effect on productivity: the impact of international agricultural research. CAB International, Wallingford, OxfordCrossRefGoogle Scholar
  6. Kheralah M, Delgado C, Gabre-Madhin E, Minot N, Johnson M (2002) Reforming agricultural markets in Africa, vol 38, IFPRI food policy statement. International Food Policy Research Institute, Washington, DCGoogle Scholar
  7. Kikuchi M, Hayami Y (1985) Agricultural growth against a land resource constraint: Japan, Taiwan, Korea, and the Philippines. In: Ohkawa K, Ranis G (eds) Japan and the developing countries: comparative analysis. Blackwell, OxfordGoogle Scholar
  8. Manski C (1993) Identification of endogenous social effects: the reflection problem. Rev Econ Stud 60(3):531–542CrossRefGoogle Scholar
  9. Matsumoto T, Yamano T (2009) Soil fertility, fertilizer, and the maize Green Revolution in East Africa, vol 5158, World Bank policy research paper. World Bank, Washington, DCGoogle Scholar
  10. Minot N, Benson T (2009) Fertilizer subsidies in Africa: are vouchers the answer? vol 60, July, IFPRI Issues Brief. International Food Policy Research Institute, Washington, DCGoogle Scholar
  11. Morris ML, Kelly VA, Kopicki RJ, Byerlee D (2007) Promoting increased fertilizer use in Africa: lessons learned and good practice guidelines. World Bank, Washington, DCGoogle Scholar
  12. Munshi K (2004) Social learning in a heterogeneous population: technology diffusion in the Indian Green Revolution. J Dev Econ 73(1):185–213CrossRefGoogle Scholar
  13. Omamo SW (2003) Fertilizer trade and pricing in Uganda. Agrekon 42(4):310–324CrossRefGoogle Scholar
  14. Yamano T, Sserunkuuma D, Otsuka K, Omiat G, Ainembabazi JH, Shimamura Y (2004) The 2003 REPEAT survey in Uganda: results.∼globalcoe/j/data/repeat/REPEATinUgandaReport.pdf

Copyright information

© The International Bank for Reconstruction and Development/The World Bank 2013

Authors and Affiliations

  • Tomoya Matsumoto
    • 1
  • Takashi Yamano
    • 2
  • Dick Sserunkuuma
    • 3
  1. 1.Division of Policy ResearchNational Graduate Institute for Policy StudiesTokyoJapan
  2. 2.Division of Social Science and EconomicsInternational Rice Research InstituteNew DelhiIndia
  3. 3.Department of Agricultural Economics and AgribusinessMakerere UniversityKampalaUganda

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