Abstract:Topical application tests to determine the toxicities of 16 insecticides were conducted on 6th instar western spruce budworm. Toxicities were compared to that of a standard, mexacarbate. Insects tested were from the 68th generation of a nondiapausing laboratory colony. Five concentrations serially diluted from a freshly prepared concentrate were used in each of 3 replications of each test. All chemicals were applied in reagent grade acetone. Treatment was performed with an ISCO model M microapplicator equipped… Show more
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