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The International Institute of Tropical Agriculture (IITA) and its research-for-development partners have made substantial contributions to food security, poverty reduction and environmental protection in sub-Saharan Africa. Technologies developed and largely diffused include high yielding variet...


Nkamleu, G.B.Coulibaly, O.Sanogo, D.Manyong, Victor M.Alene, Arega D.[Ex post impact assessment of agricultural research in subSaharan Africa: the IITA experience]Ex post impact assessment of agricultural research in subSaharan Africa: the IITA experience

IITA’s Genetic Resources Center (GRC) maintains over 15,000 accessions of cowpea (Vigna unguiculata L.) and wild Vigna which is available and distributed worldwide for research in food and agriculture. Since 1985, IITA has distributed germplasms for cowpea genetic improvement research to institut...


Manyong, Victor M.Dumet, D.Ogundapo, A.T.Horna, D.[Effectiveness of cowpea and wild Vigna germplasm distribution and cost implication on their conservation efforts by IITA]Effectiveness of cowpea and wild Vigna germplasm distribution and cost implication on their conservation efforts by IITA

The IITA in its research for sustainable soil fertility management has passed through several stages during which legume-based systems were always at the forefront. Alley cropping has N yields of more than 200 kg ha-1 with 50% N2 fixation. In the case of Mucuna cover cropping, the ecological bene...


Carsky, R.Sanginga, N.Schulz, S.Douthwaite, BoruManyong, Victor M.Diels, J.Vanlauwe, BernardKeatinge, J.D.H.[The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa]The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa

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