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dc.contributorAlene, Aregaen_US
dc.contributorTufa, Adaneen_US
dc.contributorTahirou, Abdoulayeen_US
dc.contributorKamara, Alphaen_US
dc.contributorOlufajo, Olusojien_US
dc.contributorBoukar, Ousmaneen_US
dc.contributorManyong, Victoren_US
dc.creatorManda, Juliusen_US
dc.identifier.citationJulius Manda, Arega Alene, Adane Tufa, Abdoulaye Tahirou, Alpha Kamara, Olusoji Olufajo, Ousmane Boukar, Victor Manyong. (2/5/2019). Adoption and Ex-post Impacts of Improved Cowpea Varieties on Productivity and Net Returns in Nigeria. Journal of Agricultural Economics, 71 (1), pp. 165-183.en_US
dc.description.abstractCowpea covers the largest area of any grain legume in Africa and is especially important in West Africa where Nigeria and Niger alone account for over 75% of the total cowpea production in the world. Despite successes of international and national cowpea improvement research in the development and release of several improved varieties, there is limited empirical evidence of adoption and ex-post impacts of improved cowpea. Using a nationally representative survey data from a sample of 1,525 cowpea-growing households in northern Nigeria cultivating over 2,500 cowpea plots, we assess the adoption and impacts of improved cowpea varieties on cowpea yields, net returns and production costs. We apply a control function approach and propensity score matching models to estimate the causal effects of adoption of improved cowpea varieties. Our results show that 38% of the cowpea plots were planted with improved varieties, and cowpea yields, net returns and production costs increase significantly with the adoption of improved cowpea varieties. Adoption of improved cowpea varieties is associated on average with 26% yield gains, 61% increase in net returns and 14% increase in production costs. We also show that farmers who have a lower propensity to adopt improved cowpea varieties also face higher costs of production.en_US
dc.publisherWiley (12 months)en_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceJournal of Agricultural Economics;71,(2019) Pagination 165,183en_US
dc.subjectpropensity score matchingen_US
dc.subjectimproved varietiesen_US
dc.subjectcontrol functionen_US
dc.titleAdoption and Ex-post Impacts of Improved Cowpea Varieties on Productivity and Net Returns in Nigeriaen_US
dc.typeJournal Articleen_US
cg.creator.idManda, Julius: 0000-0002-9599-5906en_US
cg.creator.idAlene, Arega: 0000-0002-2491-4603en_US
cg.creator.idKamara, Alpha: 0000-0002-1844-2574en_US
cg.creator.idBoukar, Ousmane: 0000-0003-0234-4264en_US
cg.creator.idManyong, Victor: 0000-0003-2477-7132en_US
cg.contributor.centerInternational Institute of Tropical Agriculture - IITAen_US
cg.contributor.centerAhmadu Bello University, Institute of Agricultural Research - ABU - IARen_US
cg.contributor.crpCGIAR Research Program on Grain Legumes and Dryland Cereals - GLDCen_US
cg.contributor.funderBill & Melinda Gates Foundation - BMGFen_US
cg.contributor.funderCGIAR System Organization - CGIARen_US
cg.coverage.regionWestern Africaen_US
dc.identifier.statusTimeless limited accessen_US

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