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Pacific Southwest Research Station |
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Pacific Southwest
Research Station 1731 Research Park Dr. Davis, CA 95618 (530) 759-1700 ![]() |
Publications and Products![]() Research NoteTitle: Contact toxicity of 40 insecticides tested on pandora moth larvae Author: Lyon, Robert L. Date: 1971 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 View and Print this Publication (515 KB) Citation 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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