Pacific Southwest

Title: Toxicity of insecticide aerosols to needle miner adults of the genus Coleotechnites

Author: Lyon, Robert L.; Page, Marion

Date: 1971

Source: Res. Note PSW-RN-243. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p

Station ID: RN-PSW-243

Description: Ten insecticides were tested in aerosol form against adult needle miners of the genus Coleotechnites collected from the Winema National Forest in Oregon and from the lnyo National Forest in California. In these laboratory tests, the pyrethrins were the most toxic. They were about six to seven times more toxic than malathion-the insecticide considered the most effective in suppressing needle miner epidemics. None of the chemicals other than pyrethrins was clearly more toxic than malathion. All candidates except trichlorfon caused 90 percent mortalities at 0.35 µg. .per sq. cm. (equivalent to 0.5 oz. per acre) or less.

Keywords: Coleotechnites spp., insecticides, toxicity, aerosols, Pyrethrins, Malathion, California, Oregon, Inyo National Forest, Winema National Forest

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Citation

Lyon, Robert L.; Page, Marion   1971.  Toxicity of insecticide aerosols to needle miner adults of the genus Coleotechnites.   Res. Note PSW-RN-243. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p.