The effects of leaves of Azadirachta indtca, Morinda lucida. Vel710nia
t/mygdalina. Jatropha curcas, Ocimum gratissimum, 'Ocimum basillicum, Gliciridia
sepium and the seeds of Piper guineense, Parkia 'bicolor and roots of Ztngiber
offtcinalis on Sitophtlus zeamais infesting maize (Zea mays) were assessed. TIle
leaves, seeds and roots powdered were applied at different dosages of la, 5, 1 and
o g plant parts on 50 g of maize. The seeds of P. guineense and leaves of O.
gratissimum and A. indica were more effective than parts of al] other plant species
used. None of the powdered plant parts affected the colour or the palatability of the
maize grains. '