Full TGIF Record # 34098
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Publication Type:
i
Report
Author(s):Potter, D. A.; Spicer, P. G.
Author Affiliation:Department of Entomology, S-225 Agr. Sci. Bldg. N, University of Kentucky, Lexington, KY 40546-0091
Title:Control of green June beetle grubs during egg hatch resolves problem of grubs dying on the turf surface, 1993
Source:Arthropod Management Tests. Vol. 19, 1994, p. 324-325.
Publishing Information:Annapolis, MD: Entomological Society of America
# of Pages:2
Keywords:TIC Keywords: Poa pratensis; Cotinis nitida; Insect control; Insecticide evaluation; Imidacloprid; Isofenphos
Abstract/Contents:"This study was conducted in a mature, low-maintenance stand of Kentucky bluegrass in Lexington, KY. The turf was on a Maury silt loam soil (fine-silty, mixed, mesic Typic Paleudalf). Thatch accumulation was negligible. Plots (10 x 10 ft) were established in a RCB with five replications. There were 2 ft untreated boundaries between plots. The turf was mown weekly to 3 inch height, with the clippings left on the plot surface. Treatments were applied 28 Jul, about 2 wk after peak adult flight activity. Conditions at the time of treatment were sunny, 92 degrees F, with 5-10 mph winds. Granular treatments were diluted with dry sand and applied with to the plots by gloved hand. The wettable powder formulation was mixed with water and applied with a Solo backpack sprayer using 1 gal of spray per plot. All treatments were immediately irrigated with 0.25 inches of water, using a water truck and hose with a shower-type nozzle. The grub population at the time of treatment consisted of eggs and first instars. Effectiveness of treatments was assessed 61-62 DAT using an insecticide flush method. Triumph 4E (isazophos) was applied at the labeled rate (2 lb (AI)/acre) on 27 Sep, using a Solo backpack sprayer that delivered 0.5 gal spray/plot. The flush spray was immediately syringed with 0.25 inch of water as before. Grub populations were assessed at dawn of the following 2 d. A frame (3.3 x 3.3 ft) made from PVC pipe was placed in the center of each plot, and dead green June beetle grubs within the sample area were counted and removed. Counts for the two samples were pooled and analyzed by ANOVA followed by Fisher's protected LSD to separate treatment means. All treatments significantly reduced grub population. Nearly all (>95%) of the sampled grubs were found on the first morning after the flush was applied. This preventative approach to green June beetle grub control eliminates the nuisance and potential environmental hazard caused by mature grubs dying on the turf surface following treatments applied in late summer or fall. It may be justified in high priority areas (e.g., around golf greens) where high adult beetle activity is observed."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Potter, D. A., and P. G. Spicer. 1994. Control of green June beetle grubs during egg hatch resolves problem of grubs dying on the turf surface, 1993. Arthropod Manage. Tests. 19:p. 324-325.
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