Laboratory evaluation of West African black pepper (Piper guineense) seed powder against maize weevil (Sitophilus zeamais Mots.)

Abstract : The seed powder of West African black pepper (Piper guineense) was evaluated in the laboratory against the maize weevil (Sitophilus zeamais Mots.) to assess for repellency, progeny development and adult mortality. The powder was applied as direct admixture at 0, 5, 10 and 20 g per 40g of maize grains. Results obtained showed significant (P<0.05) of 49.50% to 100% compared with the control. Adult mortality significantly (P<0.05) increased with increase in concentration and 100% mortality was achieved after 96 hours of exposure of insects to treatment. Progeny development was also significantly inhibited as fewer adults emerged from treated grains compared with the control. The potential of using the seed powder of P. guineense as grain protectant against infestation of stored maize by S. zeamais is discussed
Keyword : Black pepper, weevil, progeny, repellency, stored maize
Author(s) : , I. O. Udo, M. S. Ekanem, E. U. Inyang
Downloads : 1238

Download View 2011 Vol. 6 Number 2