Fireworm Control, 1995

Materials were applied on 1 Aug, when there was ca. 1 webbed stem/ft2, and again on 17 Aug for RSF larval control to 10- by 10-ft plots in a pruned blueberry field at Township 18, Maine. Blueberry plants were ca. 25% tip die-back stage on 1 Aug and 90% tip die-back stage on 17 Aug. There were 3 replications of each treatment in a RCBD with a minimum 3-ft untreated buffer strip around each plot. Insecticides were applied at a rate of 25 gpa using a CO2-propelled 30-inch boom sprayer with 4 flat spray, 800067 TeeJet nozzles operating at 40 psi. On sample dates indicated in table, all stems with leaves webbed together by larvae were counted in 5, sq ft areas per plot. August was generally warm with less than adequate rainfall; only 1.27 inches of rain was recorded for the entire month.