Control of Hornworms1 by Trapping with Blacklight and Stalk Cutting2 in North Carolina

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Studies were continued in 1963 and 1964 near Oxford, North Carolina, to determine the effectiveness of a com- bination of traps equipped with blacklight lamps plus stalk cutting for large-area control of the tobacco hornworm, Manduca sex/a (Johannson), and the tomato horn- worm, M. quinque11laCltla/a (Haworth) on flue-cured to- bacco. In 1963, the numbers of eggs and small larvae at the center of the 1I3-square-mile study area decreased 83% compared with the numbers 6 miles outside the area. In 1964, the estimated damage from the tobacco hornworm at the center of the trapping area was 77 and 91% less than that 6 and 14 miles outside the area. Marked increases in stalk cutting in the trapping area in the fall of 1962 and 1963 probably increased the control. In 1963, 90% fewer applications of insecticide for hornworm con- trol were made inside the trapping area than outside; in 1964, 60% fewer applications of insecticides for control of all tobacco insects were made inside the area.

Document Type: Research Article

Publication date: October 1, 1967

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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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