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Laboratory Studies on Several Plant Materials as Insect Repellants for Protection of Cereal Grains

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Abstract:

Three plant materials that are common in Pakistan, rhizomes of Curcuma longa (L.) (turmeric), leaves of Azadirachta indica A. Juss. (neem), and leaves of Trigonella foenum-graecum L. (fenugreek), were evaluated for their repellency against the adults of the three species of stored-product insects, Tribolium castaneum (Herbst), Sitophilus granarius (L.), and Rhyzopertha dominica(F.). Turmeric powder was the most effective of the three against S. granarius and R. dominica. and also the most effective of the solvent extracts against T. castaneum. For each plant material, the petroleum ether extracts were more effective than the acetone and ethanol extracts. The petroleum ether extract of fenugreek deteriorated much faster than the similar extracts of turmeric and neem. The petroleum ether extract of neem was the most effective of the three plant materials against penetration by R. dominica.

Document Type: Research Article

Publication date: February 1, 1983

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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