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| Publication Type:
| Report |
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| Author(s): | Weinhold, A. P.;
Baxendale, F. P.;
Weinhold, K. A. |
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| Author Affiliation: | Depatment of Entomology, University of Nebraska-Lincoln, Lincoln, NE |
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| Title: | Application timing of insecticides for control of annual white grubs on a golf course rough, 1996 |
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| Section: | Ornamentals
Other records with the "Ornamentals" Section
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| Source: | Arthropod Management Tests. Vol. 22, 1997, p. 372. |
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| Publishing Information: | Annapolis, MD: Entomological Society of America |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Clay loam soils; Application timing; Insecticides; Insect control; Cyclocephala lurida; Golf rough; Poa pratensis; Imidacloprid; Experimental products; Application rates; Formulations
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| Abstract/Contents: | "This study was conducted in Lincoln, NE on a golf course rough. The turf (50% Kentucky bluegrass and 50% perennial rye) was maintained at a mowing height of 2.0 inches. Thatch accumulation (finger compressed) in the plot area was 0.75 inches. Field conditions at the study site were: soil type, silty clay loam; soil organic matter, 3.5%; soil pH, 6.5; water pH, 7.0. Environmental conditions at the time of application on 18 Jun, 09 Jul, and 06 Aug were, respectively, as follows: soil moisture 20%, 19%, and 20% by wt; air temperature 81°F, 74°F, and 87°F; soil temperature 72°F, 74°F, and 77°F; relative humidity 63%, 39%, and 66%; wind direction and velocity 155° at 3 mph., 22° at 6 mph, 204° at 12 mph. Plots were 6 X 10 ft and the experimental design was a RCB with 3 replications. Liquid insecticides were applied using a CO² sprayer with a TeeJet® 8002 nozzle at 30 psi and delivering 2 gal/1000ft². Following applications, plots were irrigated with 0.35 inch water. Post-treatment precipitation totaled 13.71 inches. Treatments were evaluated 77 days after the first application on 3 Sep by removing from each plot three, 8-inch diam turf-soil cores (1.05 ft² total area) to a depth of 3 inches and counting the number of surviving grubs. All treatments, regardless of application timing or rate, provided statistically significant reductions in white grub numbers and reduced the infestation below the Nebraska threshold level of 8-10 grubs/ft². No phytotoxicity was observed." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Weinhold, A. P., F. P. Baxendale, and K. A. Weinhold. 1997. Application timing of insecticides for control of annual white grubs on a golf course rough, 1996. Arthropod Manage. Tests. 22:p. 372. |
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