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Spatial Spillover Effects of Smallholder Households’ Adoption Behaviour of Soil Management Practices Among Push–Pull Farmers in Rwanda

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  • Michael M. Kidoido

    (International Centre of Insect Physiology and Ecology, ICIPE, Duduville, Kasarani, Nairobi P.O. Box 30772-00100, Kenya)

  • Komi Mensah Agboka

    (International Centre of Insect Physiology and Ecology, ICIPE, Duduville, Kasarani, Nairobi P.O. Box 30772-00100, Kenya)

  • Frank Chidawanyika

    (International Centre of Insect Physiology and Ecology, ICIPE, Duduville, Kasarani, Nairobi P.O. Box 30772-00100, Kenya)

  • Girma Hailu

    (International Centre of Insect Physiology and Ecology, ICIPE, Duduville, Kasarani, Nairobi P.O. Box 30772-00100, Kenya)

  • Yeneneh Belayneh

    (USAID, BHA, TPQ, 1300 Pennsylvania Avenue, NW, Washington, DC 20523, USA)

  • Daniel Munyao Mutyambai

    (International Centre of Insect Physiology and Ecology, ICIPE, Duduville, Kasarani, Nairobi P.O. Box 30772-00100, Kenya)

  • Rachel Owino

    (International Centre of Insect Physiology and Ecology, ICIPE, Duduville, Kasarani, Nairobi P.O. Box 30772-00100, Kenya)

  • Menale Kassie

    (International Centre of Insect Physiology and Ecology, ICIPE, Duduville, Kasarani, Nairobi P.O. Box 30772-00100, Kenya)

  • Saliou Niassy

    (International Centre of Insect Physiology and Ecology, ICIPE, Duduville, Kasarani, Nairobi P.O. Box 30772-00100, Kenya
    African Union Inter-African Phytosanitary Council (AU-IAPSC), Yaoundé P.O. Box 4170, Cameroon
    Department of Zoology and Entomology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Hatfield, Pretoria 0028, South Africa)

Abstract

Push–pull technology (PPT) integrates maize with the legume fodder Desmodium sp. and the border crop Brachiaria sp., aiming to enhance maize production in Rwanda. Despite its potential, the adoption of complementary soil management practices (SMP), vital for PPT’s success, remains low. This study employs spatial econometric methods to evaluate the determinants of SMP adoption and the interdependencies in decision-making among PPT-practicing farmers. We constructed a spatial weight matrix based on a global Moran’s I index and identified optimal model parameters through principal component analysis. Utilizing a spatial Durbin probit model (SDPM), we assessed the spatial interdependence of SMP adoption decisions among maize farmers. Our findings reveal significant spatial dependence in SMP adoption within a 1.962 km radius, with improved seed usage, household income, yield, farmer group membership and size of land cultivated being key factors positively influencing adoption. We propose a “nonequilibrium promotion strategy” to enhance SMP adoption, emphasizing the establishment of pilot regions to broaden outreach. Additionally, fostering technical training and selecting farmers with adequate resources as demonstration leaders can enhance spatial spillover effects. This research provides insights for developing policies to scale up push–pull technology in Rwanda and across Sub-Saharan Africa.

Suggested Citation

  • Michael M. Kidoido & Komi Mensah Agboka & Frank Chidawanyika & Girma Hailu & Yeneneh Belayneh & Daniel Munyao Mutyambai & Rachel Owino & Menale Kassie & Saliou Niassy, 2024. "Spatial Spillover Effects of Smallholder Households’ Adoption Behaviour of Soil Management Practices Among Push–Pull Farmers in Rwanda," Sustainability, MDPI, vol. 16(23), pages 1-22, November.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:23:p:10349-:d:1530069
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    References listed on IDEAS

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    1. Awudu Abdulai & Wallace Huffman, 2014. "The Adoption and Impact of Soil and Water Conservation Technology: An Endogenous Switching Regression Application," Land Economics, University of Wisconsin Press, vol. 90(1), pages 26-43.
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    4. Beatrice W. Muriithi & Kassie Menale & Gracious Diiro & Geoffrey Muricho, 2018. "Does gender matter in the adoption of push-pull pest management and other sustainable agricultural practices? Evidence from Western Kenya," Food Security: The Science, Sociology and Economics of Food Production and Access to Food, Springer;The International Society for Plant Pathology, vol. 10(2), pages 253-272, April.
    5. Yamauchi, Futoshi, 2007. "Social learning, neighborhood effects, and investment in human capital: Evidence from Green-Revolution India," Journal of Development Economics, Elsevier, vol. 83(1), pages 37-62, May.
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