A participatory evaluation of improved cowpea cultivars in the Guinea and Sudan savanna zones of north east Nigeria

Author: Kamara Alpha Yaya   Ellis-Jones Jim   Ekeleme Friday   Omoigui Lucky   Amaza Paul   Chikoye David   Dugje Ibrahim Yakamba  

Publisher: Taylor & Francis Ltd

ISSN: 0365-0340

Source: Archives of Agronomy and Soil Science, Vol.56, Iss.3, 2010-06, pp. : 355-370

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