This work assesses the effectiveness of four locally consumable plant fractions in the control of insect infestation on food grains in storage. The consumable local plant fractions were bush mango (Irvin-gia gabonensis) wood, defruited oil palm bunches, ginger tuber and onion bulbs all made into ash and powder, and applied respectively to dehusked rice kernels, shelled maize kernels, and cowpea seeds kept on shelves in the laboratory for six months. Results show that all plant fractions applied proved significantly effective in the inhibition of the activities of the insect pests of the food grains (p = 0.05, LSD) in relation to the controls. However, wood ash and ginger powder treatments were especially recommended because of their high residual toxicity on the insect pests, their low cost, and their availability.
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