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Title: Contact toxicity of 40 insecticides tested on pandora moth larvae
Author: Lyon, Robert L.
Source: Res. Note PSW-RN-235. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p
Station ID: RN-PSW-235
Description: Forty insecticides and an antifeeding compound were tested on pandora moth larvae (Coloradia pandora Blake) in the second and third instars. A total of 21 insecticides were more toxic at LD90 than DDT, providing a good choice of candidates for field testing. Ten exceeded DDT in toxicity tenfold or more. These were, in descending order of toxicity at LD90: pyrethrins, tetramethrin, Zectran MA (a degradation product of Zectran), Dursban, N-4543, allethrin, aminocarb, B-10119, Zectran, and dichlorvos. Pyrethrins, more toxic by an order of magnitude than the second place candidate, appear to be especially promising.
Key Words: Coloradia pandora, insecticides, toxicity tests, pyrethrins, pyrethroids
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Lyon, Robert L. 1971. Contact toxicity of 40 insecticides tested on pandora moth larvae Res. Note PSW-RN-235. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p.
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