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Description: A helicopter spray trial with Sevin XLR (carbaryl) was conducted on a 14 acre area with dense oak, and other scattered trees. Sevin was applied from two altitudes, 180 and 50 feet above the tree tops. Samples were taken to determine mass deposition, particle sizes, and air concentrations of carbaryl; in the foliage canopy, on open ground, and downwind of the spray area. This trial established that significant mass deposition of carbaryl can be obtained at higher elevations, but only by sacrificing effective coverage and droplet size.
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Subject: Carbaryl, Insecticides -- Environmental aspects -- California, Aerial spraying and dusting in agriculture -- Environmental aspects -- California -- Tulare County
Group: Environmental Protection Agency
Creator: Segawa, R.T., California. Environmental Hazards Assessment Program
Language: English
Coverage: Tulare County (Calif.)
Format: Government Documents
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