Full TGIF Record # 18064
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Web URL(s):https://listings.lib.msu.edu/iowat/1989.pdf#page=84
    Last checked: 01/10/2017
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Publication Type:
i
Report
Author(s):Lewis, D. R.; Christians, N. E.
Title:Comparative Effectiveness of Insecticides Against Annual White Grubs - 1988
Source:1989 Iowa Turfgrass Research Report. July 1989, p. 80-81.
Publishing Information:Ames, Iowa: Iowa State University
Keywords:TIC Keywords: Insect control; Insecticides; Ochrosidia dillosa; Application timing; Autumn; Poa pratensis
Abstract/Contents:The object of this study was to evaluate and compare the late-season efficacy of several registered insecticides and one experimental against annual white grubs infesting turfgrass. The study was conducted on a fairway of at Hyperion Golf and Country Club, Johnston Iowa (Polk County). The soil at the Club is a Waukegan loam (fine-silty over sandy, mixed, mesic typic Hapludoll) with 148 lb P/A, 480 lb K/A, and 5% organic matter. The plots were near the bottom of a long, low, south-facing slope. The grass species in the plots was Kentucky bluegrass. The plot area was receiving low maintenance but regular mowing (at approximately 3 in) and irrigation as necessary. There was between one-fourth to one-half in of thatch at the test site. Grub damage was apparent throughout the plot vicinity at the time of insecticide application. The insecticide treatments were applied on September 21, 1988. Grub population counts were made October 14, 1988. The experimental design consisted of 14 treatment plots and one untreated check plots, randomly assigned in each of three replications. Each plot cosisted of a 5 ft sq area (25 sq ft). All insecticides were applied at the rate specified on the manufacturer's label or product guidelines. Annual white grub counts were made 3 and one-half weeks after application. Insecticides used, formulation, rate of application and grub counts are provided in a table. Significant differences were determined by analysis of variance. The average population density in the untreated check plot was only 10 white grubs per sq ft. Dursban emusifiable concentrate and Tuream wettable powder did not provide good control but Tuream granular did provide adequate control. Conclusions from this trial are suspect and must be viewed with caution because of the low number of grubs in the check and the high variability within treatment counts. All treatments except those already mentioned provided suppression of white grubs, even with the lateness of the insecticide application in the season. Those insecticides providing the best control in the trial were Dylox, Mocap, Turcam 2.5 G, and the Dow experimental product granules and Sevin, Oftanol, Tempo, and Triumph liquid sprays. Once again, the best performance in this annual trial was with Mocap insecticide.
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lewis, D. R., and N. E. Christians. 1989. Comparative Effectiveness of Insecticides Against Annual White Grubs - 1988. Iowa Turfgrass Res. Rep. p. 80-81.
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https://listings.lib.msu.edu/iowat/1989.pdf#page=84
    Last checked: 01/10/2017
    Requires: PDF Reader
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MSU catalog number: SB 433 .A1 I55
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