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Journal of Entomology
  Year: 2006 | Volume: 3 | Issue: 4 | Page No.: 271-276
DOI: 10.3923/je.2006.271.276
 
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Daily Mortality Responses of Callosobruchus maculatus and Sitophilus zeamais to Changes in the Concentrations of Azadirachta indica, Ocimum gratissimum and Hyptis suaveolens
B.N. Iloba and T. Ekrakene

Abstract: The powders of the leaves of H. suaveolens, O. gratissimum and Azadirachta indica were assessed for their daily effect against Sitophilus zeamais Mots infesting maize grains (Zea mays) and Callosobruchus maculatus Fab infesting cowpea seeds. The powders were tested at 1.5, 2.5 and 3.5 g/80 g of food materials. The results revealed that, daily mortality of Sitophilus zeamais was dependent on concentration with maximum kills occurring on day 3 of exposure. Mortality of S. zeamais was either absent or minimal on the first two days of exposure. This however, contrasted the pattern of mortality exhibited by Callosobruchus maculatus which showed a negative daily mortality with increased concentrations compled with maximum daily mortality occurring in the first two days of exposure.
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How to cite this article:

B.N. Iloba and T. Ekrakene , 2006. Daily Mortality Responses of Callosobruchus maculatus and Sitophilus zeamais to Changes in the Concentrations of Azadirachta indica, Ocimum gratissimum and Hyptis suaveolens. Journal of Entomology, 3: 271-276.

DOI: 10.3923/je.2006.271.276

URL: https://scialert.net/abstract/?doi=je.2006.271.276
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