
Zectran Pilot Test to Control Spruce Budworm
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- McGregor, Mark D
Forest Insect and Disease Branch, USDA - Dewey, Jerald E.
Forest Insect and Disease Branch, USDA
During 1968, a pilot test was conducted against the spruce budworm in Belmont and Chamberlain Creeks in the Blackfoot River drainage east of Missoula, Montana. Zectran, a nonpersistent carbamate insecticide, was applied at a rate of 1 ounce (6 percent by volume) in 1 pint of Dowanol (carrier), at a droplet size no larger than 120 microns in size per acre.
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