Biology of the Corn Earworm and Control with Insecticides and Virus in Washington 1

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Corn earworm moths, Heliothis zea (Boddie), collected in a black-light trap equipped with an oven for killing the moths, increased from 2 per night in June to 10 in July, 50 in August, and more than 100 in September. Spray applications tested during 1962 to 1967 showed that Furadan® (2, 3-dihydro-2, 2-dimethyl-7-benzofuranyl methylcarbamate), Gardona® (2-chloro-l- (2, 4, 5-trichlorophenyl) vinyl dimethyl phosphate), and Matacil® (4- (dimethyl-amino) -m-tolyl methylcarbamate), gave control equivalent to carbaryl. The Heliothis virus provided moderate control with some formulations, but observations indicate that infection with the virus occurs mainly when the larva eats the egg shell on hatching, so that more frequent applications would be needed to equal control with insecticides.

Document Type: Research Article

Publication date: August 1, 1968

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  • 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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