Effects of Tobacco Budworm Control at Different Treatment Levels with Several Insecticides on Flue-Cured Tobacco

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Control of Heliothis virescens (F.) at 3 different treatment levels (2.5, 5, and 10%) with Bacillus thuringiensis Berliner (Dipel®), methomyl, and monocrotophos maintained similar tobacco budworm infestations at the same treatment level on flue-cured tobacco for a given area where mid- to late-season infestations exceeded the 10% infestation level. Lower treatment levels maintained lower infestations of tobacco budworms. The number of insecticide applications required for tobacco budworrn control was influenced by the insecticide and treatment level used; the lower the treatment levels, the more applications required.

No quality differences were apparent between the different treatment levels, but all significantly increased f1uecured tobacco yields over untreated tobacco. The overall trend for the 3-yr study period was that the lower the treatment level designated, the greater the yield increase. However, under the conditions of these experiments in which the tobacco budworm infestations exceeded the 10% level at least once during each season, a 10% treatment level appeared most economical for Dipel and methomyl, but a 2.5% treatment level was considered economical for monocrotophos.

Document Type: Research Article

Publication date: April 1, 1978

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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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