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Creator:: Bousfield, Wayne E., Cifala, Frank, Kracht, Richard, and United States. Forest Service. Northern Region
Abstract:: The microbial insecticide, Bacillus thuringensis (Bt), was applied from fixed-wing aircraft to approximately 700 acres of western spruce budworm host type at the rate of 12 billion international units (BIU's) per gallon of water per acre. The objective of this control project was foliage protection to insure future cone production...
Resource Type:: Technical Report
Full Text:: Gallatin National Forest (fig.1). The area has a history of spruce budworm, and has been defoliated for the

Creator:: McGregor, Mark D., Hamel, Dennis R., Lood, Rudolph C., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Dipel (R) was applied by helicopter to three blocks of Douglas fir and Engelmann spruce infested with Choristoneura occidentalis Free., in southwestern Montana. Dosage was 1 pound (7.2 Bill) in 2 gallons of water/acre (453 g in 7.5 t/0.4 ha). A commercial surfactant, Bio-film (R) was added at the rate...
Resource Type:: Technical Report
Full Text:: against western spruce budwOrM,,GalldtinRaqger-District,'Gallatin National TOrest, 1975. Postspray

Creator:: Bousfield, Wayne E., Wulf, N. William, and Stipe, Lawrence E.
Resource Type:: Technical Report
Full Text:: THE SPRUCE BUDWORM SILVICULTURAL DEMONSTRATION PROJECT ON THE GALLATIN AND LOLO NATIONAL FORESTS

Creator:: Bousfield, Wayne E., Flavell, Thomas H., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: This evaluation showed that Bt provided measurable foliage protection 1 year after treatment, but no differences were evident after 2 years. We recommend future Bt tests include postspray population measurements in the pupal and/or adult, and/or egg stage, and that foliage protection be measured the following year. The effects of...
Resource Type:: Technical Report
Full Text:: western spruce budworm 3/ was conducted in 1975 on the Gallatin National Forest. The treatment was applied

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