Summer Management of Hairy Chinch Bug with Dursban, Talstar, and Experimental Formulations on Established Fescue Turfgrass in Somerset, Pennsylvania, 1995

The turfgrass area consisted primarily of fine leafed fescue. Treatment plots were 5 X 6 ft arranged in a randomized complete block design, replicated 3 times. Liquid formulations were applied by using a hand held sprinkling can with 2 gal of water. At treatment time (25 Jul) the following soil and environmental conditions existed: air temperature, 81° F; soil temperature at 1 inch depth, 82.0° F; soil temperature at 2 inch depth, 75.0° F; RH, 61%; amount of thatch, 0.5-1.0 inches; soil textural class, silt loam; soil particle size analysis: 28.8% sand, 50.4% silt, 20.9% clay; soil moisture (oven dry weight), 23.5%; organic matter, 7.9%; water pH, 7.0; soil pH, 5.8; application time, early evening; and overcast skies. Hairy chinch bugs were sampled by driving a 6 inch-diam stainless steel cylinder into the turf, filling it with water, and counting the number of chinch bug nymphs and adults floating to the surface during a 15 min period on 2 Aug or a 10 min period on 8 Aug. Three flotation samples were taken randomly from each replicate, and the total number of chinch bugs from each sample was recorded and converted to a ft2 count.