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Comparative Persistence of the Ovicidal Activity of Thiodicarb, Chlordimeform, and Methomyl Against Heliothis spp. (Lepidoptera: Noctuidae) on Cotton1

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A 2-yr study was conducted to determine ovicidal effectiveness of thiodicarb against Heliothis spp. in cotton in North Carolina, and to compare it with two standard ovicides, methomyl and chlordimeform. At 0.14 kg (AI)/ha, all materials caused high mortality to eggs collected 2 h after spray, with chlordimeform showing the most activity and greatest persistence, and methomyl persisting the shortest time. Higher rates of thiodicarb up to 0.67 kg (AI)/ha caused greater mortality and longer residual activity, but not at consistent levels both years. Under proper field conditions, ovicidal activity of thiodicarb should persist up to 4 d after application.

Document Type: Research Article

Publication date: April 1, 1988

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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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