Abstract
Abstract This test was conducted on a sand-based putting green at the University of Kentucky Spindletop Farm, near Lexington. The green is irrigated with about 0.2 inches daily and mowed 6 times per week at 3/16 inch cutting height. Plots (6 x 6 ft) were arranged in a RCB with each block representing one treatment date. The first treatment date was 18 Jul, with subsequent treatments repeated weekly. The final treatment was 7 Aug, 1 day before harvest. Conditions during applications ranged from 78-88°F with winds < 10 mph. Irrigation was withheld for 1 day after treatment. Daily rainfall amounts during the experiment were <¼ inch except on 31 Jul, when 1.94 inches of rain fell. Liquid applications were applied at 50 gpa using a low volume, CO2 sprayer equipped with 4 Spraying System 8004 Tee Jet nozzles that delivered 2109 g pressure per cm2. Grass clippings were harvested from plots on 8 Aug, with a Bunton greens mower and placed in labeled bags. In the lab, grass clippings were placed in 15 X 100mm plastic petri dishes with 10 neonate BCW larvae. Additional clippings were replaced as needed to maintain ample food source. Petri dishes were placed in a growth chamber and larvae were allowed to feed until 12 Aug. All dishes and clippings were then inspected for BCW larvae. Larvae were noted as dead or alive.
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