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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 9, No. 1, 2005, pp. 165-168
Bioline Code: ja05031
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 9, No. 1, 2005, pp. 165-168

 en Evaluation of the potential of some local spices as stored grain protectants against the maize weevil Sitophilus zeamais Mots (Coleoptera: Curculionidae)
UDO, I. O.

Abstract

Five local spices ( Piper guineense check for this species in other resources , Allium sativum check for this species in other resources , Afromomum melequata check for this species in other resources , Xylopia aethiopica check for this species in other resources and Tetrapleura tetraptera check for this species in other resources ) were evaluated in the laboratory for their ability to protect stored maize against infestation by S. zeamais. Ground products of the spices were applied as direct admixtures at two concentration levels of 1% and 5% to assess for mortality, progeny emergence, damage and repellency. At 1% and 5% concentration, P. guineensecaused significant (P<0.05) mortality of weevils. A. melequata and P. guineensewere strongly repellent to the weevils while the other three spices showed moderate repellent activity. There was a significant (P<0.05) reduction in damage caused by the weevils with less damage recorded on grains treated with P. guineense, A. sativum and T. tetrptera. Progeny production was also significantly

 
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