Abstract
Abstract This trial was conducted at Campbell’s Scottish Highlands Golf Club, Salem, NH. Five replications of 8 treatments were applied to a bluegrass fairway on 21 May one week past peak adult emergence. Each plot was 49 ft2; the plots were arranged in an RCB form. The liquid formulations were applied with a 2-wheel bicycle-type sprayer equipped with 4 spray heads; each head was fitted with an 8004 flattened fan-type nozzle with a 50-mesh strainer. All granulars were evenly applied with a large-holed commercial salt shaker. The volume of water and insecticide mix per plot was 2 gal/1000 ft2, applied by CO2 pressure at 40 psi. Natural rainfall irrigated the plots (0.1 inch). Weather conditions were as follows: air temp, 55°F; sky, partly cloudy; wind, 10 mph. Soil conditions were as follows: temp (1-inch), 55CF; texture, loam; sand, 66%; silt, 26%; clay, 8%; moisture, 20.95%; organic matter, 5.3%; pH, 7.2. On 22 Jul, a 2-ft2 section of each plot was rated for live larvae.
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