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International Journal of Tropical Insect Science (1)

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Effects of some neem products on stored maize weevil, Sitophilus zeamais Motsch
J.R. Cobbinah, J. Appiah-Kwarteng
Journal:

Insect Science and Its Application / Volume 10 / Issue 1 / February 1989

Published online by Cambridge University Press:

19 September 2011, pp. 89-92

Print publication:

February 1989
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Various neem products were compared with copra oil, palm oil and 0.25% diazinon dust for protection of stored maize against the grain weevil, Sitophilus zeamais Motsch. Maize kernels treated with neem oil or ash were damaged less than the control. Although copra and palm kernel oil reduced S. zeamais attack, these edible oils were not as effective as neem oil. Neem wood ash was however, less effective than 0.25% diazinon dust. Neem derivatives inhibited oviposition and/or deterred feeding.