Abstract
The wireworm Agriotes obscurus (L.) was controlled in silty loam at Agassiz, British Columbia, from 1953 to 1956, by insecticides incorporated into the soil. Single applications of aldrin or heptachlor at 5 lb. of toxicant per acre gave good protection to potatoes planted a month after application, and gave 100 per cent mortality of wireworms by the second or third season. Aldrin at 2.5 lb., DDT at 15 lb., and granulated heptachlor at 3 lb. did not give adequate control in the year of application but gave appreciable control in the third and fourth seasons. Ethylene dibromide at 1.6 gal. per acre did not give control.
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