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Cowpea 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 an...


Manda, J.Alene, A.Hirpa Tufa, A.Abdoulaye, TahirouKamara, A.Olufajo, O.Boukar, O.Manyong, Victor M.[Adoption and ex-post impacts of improved cowpea varieties on productivity and net returns in Nigeria]Adoption and ex-post impacts of improved cowpea varieties on productivity and net returns in Nigeria
Abate, T.Alene, A.Bergvinson, DavidShiferaw, B.Silim, S.Orr, A.Asfaw, S.[Tropical grain legumes in Africa and South Asia: knowledge and opportunities]Tropical grain legumes in Africa and South Asia: knowledge and opportunities

Impact studies assuming exogenous technology adoption are bound to overstate or understate the true impact of improved agricultural technologies, especially in situations where agricultural technologies are targeted to, or adopted by, a certain group of farmers. This paper examined the impact of ...


Alene, A.Manyong, Victor M.[Endogenous technology adoption and household food security: the case of improved cowpea varieties in northern Nigeria]Endogenous technology adoption and household food security: the case of improved cowpea varieties in northern Nigeria

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