Comparison of Two Rates of Sevin 4 Oil for Spruce Budworm Control in Maine: 1976
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- Trial, Henry Jr.
Maine Bureau of Forestry - Struble, David
Maine Bureau of Forestry - Ford, Robert
U.S. Forest Service
One of the registered insecticides for spruce budworm suppression in Maine is Sevin 4 Oil (carbaryl). The registered application rate is one pound active carbaryl diluted with eight fluid ounce of number 2 fuel oil, to make 40 fluid ounces of formulation, per acre, applied aerially.
In 1976, the Maine bureau of Forestry, in cooperations with U.S.D.A., Forest Service, compared the efficacy of 1 lb. per acre with a reduced application rate of 3/4 lb. per acre. Spray application was monitored by use of spray deposit cards. Efficacy was based upon budworm larval survival and foliage preservation.
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