Abstract
Abstract This trial was conducted at Campbell’s Scottish Highlands Golf Course, Salem, NH. Four replications of six treatments were applied to a bluegrass fairway on 15 May at peak adult emergence. Each plot was 147 ft2, arranged in an RCB form. The liquid formulations were applied with a 2-wheel bicycle-type boom sprayer equipped with 4 spray heads; each head was fitted with an 8004 flattened fan-type nozzle and a 50-mesh strainer. CO2 was the source of pressure applied at 40 psi. The volume of water and insecticide mix per plot was 1 gal/1000 ft2. All granulars were evenly applied with a large-holed, commercial salt shaker. The liquid formulations were allowed to dry; the granulars were watered in up to M". Weather conditions were as follows: air temp, 65°F; sky, overcast; wind, 10-15 mph. Soil conditions were as follows: temp (1-inch), 57°F; temp (2-inch), 55°F; texture, sandy loam; sand, 68%; silt, 24%; clay, 8%; moisture, 21.2%; organic matter, 5.2%; pH, 7. On 23 Jul, 2-ft2 sections of each plot were rated for live larvae; a Ryan sod cutter was used to cut into the turf.
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