Genotypic Variation for Normalized Difference Vegetation Index and Its Relationship with Grain Yield in Cowpea Hybrids Under Drought and Well-Watered Conditions.
Dorcas Olubunmi Ibitoye, Cowpea Breeding Unit, International Institute of Tropical Agriculture (IITA), Headquarters, Ibadan, NIGERIA and Ousmane Boukar, International Institute of Tropical Agriculture, Kano, Nigeria