Abstract
Abstract The study was located on a golf course fairway at Jeromesville. Insecticides were applied 16 Jun to plots 8 × 10 ft arranged in a RCB, replicated 4 times. Granular insecticides were applied using a drop spreader and liquids using a CO2 sprayer with Teejet XR8006VS nozzles at 35 psi pressure that delivered a volume of 1 gal/1000 ft2. The experimental area was irrigated approximately V* inch after all treatments were applied but before sprays had dried on the grass blades. Environmental conditions at time of treatment were as follows. BTA: eggs and 1st instars present, no pretreatment count. Turf: level, light dew, IVs inch height, 40% perennial ryegrass, 30% Kentucky bluegrass, 30% annual bluegrass. Thatch: dense, moist, % inch. Soil: moist, 66°F at 1 inch and 67°F at 3 inch. Weather: sunny, 65°F, 0-5 mph. Water: pH 6.5. Efficacy data taken 6 Jul (20 DAT) were based on the number of live BTA larvae and pupae in 6, 4Vt inch in diam samples from each plot. No phytotoxicity was observed.
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