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Aerial Application of Bacillus Thuringiensis for Control of the Bagworm in Pine Plantations

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An aerial application of Dipel TM, a bacterial microbial insecticide formulation of spores and crystals of Bacillus thuringiensis Berliner, provided 95 percent control of the bagworm (Thyridopteryx ephemeraeformis (Haworth) in a Scotch pine (Pinus sylvestris L.) plantation. Viable spore counts on foliage averaged 1,105/g for pretreatment compared to 283,300 spores/g immediately after treatment. Spore counts 28 days after treatment averaged 611 spores/g. Per acre costs were $4 for Dipel, $2.75 for crude blackstrap molasses and $15 for the aircraft.

Document Type: Journal Article

Affiliations: Research Leader of the USDA, ARS, Biological Control of Insects Research Unit, Columbia, Missouri

Publication date: January 1, 1975

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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