Greenhouse Transplant Pot-Applied Insecticides to Control Colorado Potato Beetle in Tomatoes, 1980

‘Campbell 28’ tomatoes were seeded to individual 4 in. pots in the greenhouse on Apr 9 ‘80. Insecticides were applied either 4 weeks or 2 weeks before transplanting: granular treatments were applied to pots and lightly incorporated; liquid treatments were applied to pots as a drench with 10 ml of water/pot. Plants were transplanted to a Sassafras sandy loam field on May 19. Field plots were arranged in a split-split plot design with 4 replications: whole plots were insecticides; split plots were rates of insecticdes; and split-split plots were time of application. Split-split plots consisted of 6 plants/row, 18 in. apart on a 5 ft bed. Insect counts were recorded on Jun 20; fruit were harvested on Jul 30 and Aug 15, weighed, and examined for Colorado potato beetle scars or damage. Plots were irrigated when moisture was below normal.