IDEAS home Printed from https://ideas.repec.org/p/hal/pseptp/halshs-02973685.html
   My bibliography  Save this paper

Reconciling yield gains in agronomic trials with returns under African smallholder conditions

Author

Listed:
  • Rachid Laajaj

    (UNIANDES - Universidad de los Andes [Bogota])

  • Karen Macours

    (PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, PJSE - Paris Jourdan Sciences Economiques - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

  • Cargele Masso

    (IITA-DRC - International Institute of Tropical Agriculture - IITA - International Institute of Tropical Agriculture [Nigeria] - CGIAR - Consultative Group on International Agricultural Research [CGIAR])

  • Moses Thuita

    (IITA-DRC - International Institute of Tropical Agriculture - IITA - International Institute of Tropical Agriculture [Nigeria] - CGIAR - Consultative Group on International Agricultural Research [CGIAR])

  • Bernard Vanlauwe

    (IITA-DRC - International Institute of Tropical Agriculture - IITA - International Institute of Tropical Agriculture [Nigeria] - CGIAR - Consultative Group on International Agricultural Research [CGIAR])

Abstract

Increased adoption of improved agricultural technologies is considered an essential step to address global poverty and hunger, and agronomic trials suggest intensification in developing countries could result in large yield gains. Yet the promise of new technologies does not always carry over from trials to real-life conditions, and diffusion of many technologies remains limited. We show how parcel and farmer selection, together with behavioural responses in agronomic trials, can explain why yield gain estimates from trials may differ from the yield gains of smallholders using the same inputs under real-life conditions. We provide quantitative evidence by exploiting variation in farmer selection and detailed data collection from research trials in Western Kenya on which large yield increments were observed from improved input packages for maize and soybean. After adjusting for selection, behavioural responses, and other corrections, estimates of yield gains fall to being not significantly different from zero for the input package tested on one of the crops (soybean), but remain high for the other (maize). These results suggest that testing new agricultural technologies in real-world conditions and without researcher interference early in the agricultural research and development process might help with identifying which innovations are more likely to be taken up at scale.

Suggested Citation

  • Rachid Laajaj & Karen Macours & Cargele Masso & Moses Thuita & Bernard Vanlauwe, 2020. "Reconciling yield gains in agronomic trials with returns under African smallholder conditions," PSE-Ecole d'économie de Paris (Postprint) halshs-02973685, HAL.
    • Handle: RePEc:hal:pseptp:halshs-02973685
    DOI: 10.1038/s41598-020-71155-y
    as

    Download full text from publisher

    To our knowledge, this item is not available for download. To find whether it is available, there are three options:
    1. Check below whether another version of this item is available online.
    2. Check on the provider's web page whether it is in fact available.
    3. Perform a search for a similarly titled item that would be available.

    Other versions of this item:

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Jérémie Gignoux & Karen Macours & Daniel Stein & Kelsey Wright, 2023. "Input subsidies, credit constraints, and expectations of future transfers: Evidence from Haiti," American Journal of Agricultural Economics, John Wiley & Sons, vol. 105(3), pages 809-835, May.
    2. Michelson,Hope Carolyn & Gourlay,Sydney & Wollburg,Philip Randolph, 2022. "Non-Labor Input Quality and Small Farms in Sub-Saharan Africa : A Review," Policy Research Working Paper Series 10092, The World Bank.
    3. Maertens, Miet & Oyinbo, Oyakhilomen & Abdoulaye, Tahirou & Chamberlin, Jordan, 2023. "Sustainable maize intensification through site-specific nutrient management advice: Experimental evidence from Nigeria," Food Policy, Elsevier, vol. 121(C).
    4. Kosmowski, Frederic & Chamberlin, Jordan & Ayalew, Hailemariam & Sida, Tesfaye & Abay, Kibrom & Craufurd, Peter, 2021. "How accurate are yield estimates from crop cuts? Evidence from smallholder maize farms in Ethiopia," Food Policy, Elsevier, vol. 102(C).
    5. Michelson, Hope & Gourlay, Sydney & Lybbert, Travis & Wollburg, Philip, 2023. "Review: Purchased agricultural input quality and small farms," Food Policy, Elsevier, vol. 116(C).
    6. Paola Mallia, 2022. "You reap what (you think) you sow? Evidence on farmers’behavioral adjustments in the case of correct crop varietal identification," PSE Working Papers hal-03597332, HAL.
    7. Bloem, Jeffrey R. & Liverpool-Tasie, Saweda & Adjognon, Serge G. & Dillon, Andrew, 2022. "Private Sector Promotion of Climate-Smart Technologies: Experimental Evidence from Nigeria," 2022 Annual Meeting, July 31-August 2, Anaheim, California 322152, Agricultural and Applied Economics Association.
    8. repec:ags:aaea22:335821 is not listed on IDEAS

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:hal:pseptp:halshs-02973685. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Caroline Bauer (email available below). General contact details of provider: https://hal.archives-ouvertes.fr/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.