THE EFFECT OF INSECT PEST (A PHID) IN THE PRODUCTION OF COWPEA (BEANS) A CASE STUDY OF RAFI LOCAL GOVERNMENT AREA OF NIGER STATE  

2015-08-08
A major food crop grown in many African countries is the legume cowpea (Vigna unguiculata (L) Walp). Cowpea grains are well known for their protein content (20-30%) and they are ...