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| Publication Type:
| Report |
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| Author(s): | Baxendale, F. P.;
Weinhold, A. P.;
Von Bargen, K.;
Grisso, R. D. |
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| Author Affiliation: | Department of Entomology; Biological systems engineering, University of Nebraska-Lincoln, Lincoln, NE 68583-0816 |
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| Title: | Subsurface vs. conventional insecticide applications for control of annual white grubs on a golf course fairway, 1993 |
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| Source: | Arthropod Management Tests. Vol. 19, 1994, p. 320. |
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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: Poa pratensis; Cyclocephala lurida; Insect control; Insecticide evaluation; Application rates; Subsurface application
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| Abstract/Contents: | "The study was conducted in Lincoln, NE on a Kentucky bluegrass golf course fairway. The turf (100% Kentucky bluegrass) was maintained at a mowing height of 5/8 inches and thatch accumulation in the plot area was 0.75 inches (finger compressed, 0.5 inches). Field conditions at the time of application were: soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6-7; water pH, 7.0; soil moisture, near field capacity. Plots were 40 inches x 15 ft and the experimental design was a RCB with 4 replications. Insecticides were applied 20 Aug. Subsurface treatments were applied using a Cushman Prototype Subsurface Applicator designed toplace liquid or granular insecticides at the soil-thatch interface (average depth, 0.75 inches). Conventional granular treatments were applied with a Gandy 24H12 drop spreader. Conventional liquid applications were applied with a CO2 sprayer with LF-4 tip delivering 3 gal finished spray/1000 ft2 at 24 psi. Immediately following the applications, plots were irrigated with 0.5 inches of water. A total of 5.35 inches of water fell during the post-treatment period. Treatments were evaluated 21 DAT on 10 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. Pretreatment counts indicated 50-75 SMC [southern masked chafer] grubs (5% first-instar, 85% second-instar, 5% third-instar) per square foot. All rate/application combinations of Mocap and Turcam provided statistically significant reductions in white grub numbers. However, a high degree of variability among plots (C.V. = 77.3) resulted in poor separation of means. While there was little apparent advantage to applying Turcam subsurface, the subsurface applications of Mocap provided numerically greater control than the same rate conventionally applied. Likewise, there was a numerical advantage to applying the 6.0 and 8.0 lb rates of Sevin 3.5 G subsurface. 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):
Baxendale, F. P., A. P. Weinhold, K. Von Bargen, and R. D. Grisso. 1994. Subsurface vs. conventional insecticide applications for control of annual white grubs on a golf course fairway, 1993. Arthropod Manage. Tests. 19:p. 320. |
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