Full TGIF Record # 19487
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Publication Type:
Author(s):McClure, T. W.; Gordon, F. C.; Potter, D. A.
Title:Evaluation of insecticides for control of masked chafer grubs in Kentucky bluegrass
Source:Kentucky Turfgrass Research. 1986, p. 33.
Publishing Information:Lexington, KY: University of Kentucky, College of Agriculture, Cooperative Extension Service
Series:Progress Report 303
Keywords:TIC Keywords: Poa pratensis; Grubs; Cyclocephala lurida; Insecticide evaluation; Insect control
Abstract/Contents:1986 study conducted in a Kentucky bluegrass plot in Fayette county, Kentucky. The thatch layer was <0.25 inch. On 6 August, 90 turf/soil cores (6 x 6 in.) were removed from the plot and set inside 6 in. (dia.) x 7 in. (lgth.) sections of PVC pipe with bottoms of the soil cores even with the bottom of the pipe. A piece of fiberglass window screen was placed over each hole and the pipes with the cores inside were placed back into the holes so that the screens covered the bottoms of the pipes and soil. The plot was then irrigated with ca. 1 inch of water. Second and third instar southern masked chafer grubs were collected from an untreated golf course rough on 18 August. That evening, 10 grubs were placed in each cylinder. Any grubs that had not burrowed underground within 30 minutes were replaced. Insecticide treatments were applied on 25 August. The RCB experimental design consisted of 6 replicates with 15 treatments including a check. Granular insecticides were mixed with dry sand and hand shaken into the cylinders. The plot was irrigated with ca. 1 inch of water after the insecticides were applied. On 15 September the cylinders were removed from the plot, the soil cores were removed and broken apart, and the number of surviving grubs counted. CGA-73102 and CME-16003 gave less than 50% control while Triumph, Mocap, Diazinon, XRM-4902, XRM-4849 and Oftanol provided >85% control. There was no evidence of phytotoxicity from any treatment.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McClure, T. W., F. C. Gordon, and D. A. Potter. 1986. Evaluation of insecticides for control of masked chafer grubs in Kentucky bluegrass. KY. Turfgrass Res. p. 33.
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