Several commercial formulations of the delta endotoxin form of Bacillus thuringiensis Berliner gave adequate control of Heliothis virescens (F.) on flue-cured tobacco. When applied as sprays, Dipel®, Biotrol® XK, Thuricide® HP, and Thuricide® HPC were usually as effective as standard chemical insecticides, although the rates varied depending on the material used. Bait preparations of Dipel, Thuricide HP, and Biotrol 2.5 gave excellent tobacco budworm control when applied by gloved hand. Residual toxicity of the baits under certain field conditions gave adequate control even after 5 days of exposure; however, residual toxicity of spray formulations was not as long as that of the baits, and they began to decrease significantly in effectiveness after 4 days of exposure to field conditions. The B. thuringiensis compounds in the form of Dipel, Biotrol XK, and Thuricide HPC sprays did not exhibit any harmful effects to lady beetles.
Document Type: Research Article
Publication date: December 1, 1974
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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.