Effect of Formulation, Concentration, and Application Time on the Efficacy of Bacillus thuringiensis (8-14) Against Black Fly (Diptera: Simuliidae) Larvae Under Natural Conditions
Authors: Lacey, Lawrence A.; Undeen, Albert H.
Source: Journal of Economic Entomology, Volume 77, Number 2, April 1984 , pp. 412-418(7)
Publisher: Entomological Society of America
Abstract:Comparisons of formulations of Bacillus thuringiensis (H-14) de Barjac and different application times were conducted in small streams against Simulium vittatum Zetterstedt in northeast Tennessee. Teknar liquid (wdc), Vectobac (WP), and Bactimos (WP) produced average mortalities of 85, 80, and 61%, respectively, at 10 mg/liter per 1 min (=10 ppm) 10 to 400 m below the point of application. The efficacy of the 1-min application time of Teknar at 10 mg/liter was significantly higher in terms of mortality and effective carry than the 20-min application at 0.5 mg/liter. Doubling and trebling the concentration of Vectobac WP and Bactimos WP, respectively, increased mortality and carryover that of the rate of 10 mg/liter per min, but was not proportionate to increase in dosage.
Document Type: Research Article
Publication date: 1984-04-01
- 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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