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Neem (Azadirachta indica A. Juss) seed oil was found highly effective in reducing the survival of a planthopper, Nilaparvata lugens (Stål), and in suppressing transmission of grassy stunt and ragged stunt viral diseases of rice. Generally, insect survival and disease transmission decreased with increasing neem oil concentrations. After 3 days of exposure, the insect failed to transmit the viruses to plants sprayed with 50% neem oil, compared with control plants where virus transmission was successful.
Document Type: Research Article
Publication date: June 1, 1985
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.