Full TGIF Record # 54086
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Publication Type:
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Author(s):Held, D.; Potter, D. A.; Williamson, C.; Keathley, C.; Kunkel, B.
Author Affiliation:Department of Entomology, S-225 Agric. Sci. Bldg. N., University of Kentucky, Lexington, KY
Title:Irrigation effects on efficacy of Halofenozide (RH 0345) against white grubs, 1995
Section:Ornamentals
Other records with the "Ornamentals" Section
Source:Arthropod Management Tests. Vol. 22, 1997, p. 374-375.
Publishing Information:Annapolis, MD: Entomological Society of America
# of Pages:2
Keywords:TIC Keywords: Loam soils; Irrigation scheduling; Pest density; Irrigation; Insect control; Halofenozide; Popillia japonica; Cyclocephala lurida; Festuca arundinacea; Imidacloprid; Application rates; Formulations
Abstract/Contents:"This test was conducted in turf-type tall fescue at the University of Kentucky Spindletop Farm, near Lexington. The turf was on a Maury silt loam soil (pH = 6.4) with negligible thatch. Plots (4 X 6 ft; 2 ft untreated borders) were arranged in a RCB with 4 replications. Plots that received post-treatment irrigation were treated on 27 Jul, during flight of JB. The population in the soil consisted mostly of eggs, with some 1st instars. Granular formulations were preweighed, mixed with dry sand, and applied evenly to the plots by gloved hand. Liquid applications were applied at 50 gpa using a low volume, CO₂ sprayer equipped with 4 Spraying System 8004 Tee Jet nozzles that delivered 2109 g pressure per cm². Treated and untreated check plots were syringed with 1/8 inch of water within 5 min after application, and the whole site received 3/4 inch of irrigation as the last treatment was applied. Conditons at the time of treatment on 27 Jul were 88°F with winds < 10 mph. The non-irrigated plots were treated in the same manner on 31 Jul, except that no syringing or post-treatment irrigation was applied. Conditions at the time of treatment were 92°F, with negligible wind. There was 0.23 inch of rain on 26 Jul, the day before the irrigated plots were treated. There was no additional rain until 1.78 inch fell on 5 Aug. All plots were sampled on 14 Sep. A motorized sod cutter was used to cut a 3 X 1.5 ft strip, about 3" deep, from the center of each plot. The sod was rolled back, broken apart, and all grubs were identified and counted. Densities of grubs in untreated plots averaged about 21 grubs per sample (4.7/ft²). The distribution of species was about 81% JB and 19% SMC. Most were 3rd instars at the time of sampling. A relatively light beetle flight in 1995, together with very dry summer conditions contributed to generally low grub densities throughout Kentucky. Nevertheless, the efficacy of RH-0345 and the standard (Merit) was clear. The granular formulation of RH-0345 was at least as effective as the 2SC formulation. Both Merit and the high rate of RH-0345 gave excellent control of both grub species with or without immediate post-treatment irrigation. The heavy rain 5 d after the non-irrigated application probably contributed to the movement of residues into the soil. This test indicates that both RH-0345 and Merit, applied during the beetle flight, will provide significant residual control of grubs, and that immediate post-treatment irrigation is not required. There was no evidence of phytotoxicity from any treatment."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Held, D., D. A. Potter, C. Williamson, C. Keathley, and B. Kunkel. 1997. Irrigation effects on efficacy of Halofenozide (RH 0345) against white grubs, 1995. Arthropod Manage. Tests. 22:p. 374-375.
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