PHYSIOLOGICAL RESPONSES OF COWPEA (VIGNA UNGUICULATA L. WALP) VARIETIES TO RHIZOBIA INOCULATION, PHOSPHORUS APPLICATION AND SEQUENTIAL CROPPING SYSTEM IN MINNA, NIGERIA
ABSTRACT Cowpea is the most important grain legume in Nigeria but the yield obtained on farmers’ fields is far below the potential yield of the crop. This study aimed at exploiting rhizobia inoculation, phosphorus application, varietal differences and sequential cropping system to improve the productivity and profitability of cowpea per unit area in Minna, Nigeria. A glasshouse and two field experiments were conducted between 2015 and 2017. The glasshouse experiment ...
Read more