Control of First Generation Black Turfgrass Ataenius Adults on a Golf Course Fairway, 1992:

Abstract

Two study sites were established, using large (>110 m2) plots to determine the efficacy of chlorpyrifos (Dursban 4E) against black turfgrass ataenius adults. In each case, chlorpyrifos was applied twice, at two week intervals. The first site was a golf course fairway in Concord, MA–creeping bentgrass (40%), annual bluegrass (40%), perennial ryegrass (20%), maintained at 1.3 cm. Plots were 11.6 x 10 m, replicated 3 times, applied with hydraulic sprayer at 880 liter/ha. Plots were treated on 6 and 20 May or on 20 May and 3 Jun, and sample 13 Jul. The second site was a golf course fairway in South Hadley, MA–annual bluegrass (50%), creeping bentgrass (25%), Kentucky bluegrass (25%), maintained at 1.3 cm. Plots were 19 X 10m, replicated 3 times, applied with Hahn sprayer at 704 1/ha. Plots were treated on 7 and 21 May or on 21 May and 4 June and sampled 21 July. Both sites were evaluated by collected 10 soil cores (10.6 cm diam., 4 cm deep), at least 3m from the nearest edge, from each plot. Cores were inspected under magnification in the Amherst laboratory.