EFFECTS OF FOUR AGROBOTANICAL EXTRACTS AND THREE TYPES OF BAGS ON THE CONTROL OF INSECT PESTS AND MOULDS OF STORED YAM CHIPS. Eze S. C, Asiegbu J. E, Mbah B. N, Orkwor G. C. and Asiedu R. EVALUATION OF SOME ACCESSIONS OF BAMBARA GROUNDNUT (VIGNA SUBTERRANEAN L. VERDC) FOR RESISTANCE TO BRUCHID INFESTATION, BASED ON GRAIN SOURCE AND SEED COAT COLOUR Bonaventure Chukwujindu Echezona, Chinedu Felix Amuji1*, Simon Eze