COWPEA (Vigna unguiculata (L.) Walp) SEED QUALITY AND YIELD AS INFLUENCED BY MANIPULATING SOWING DATES FOR THE MANAGEMENT OF SCAB INDUCED BY Elsinoe phaseoli Jenkins, AT SAMARU, NORTH-WEST NIGERIA
COWPEA (Vigna unguiculata (L.) Walp) SEED QUALITY AND YIELD AS INFLUENCED BY MANIPULATING SOWING DATES FOR THE MANAGEMENT…