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| Publication Type:
| Report |
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| Author(s): | Heller, P. R.;
Walker, R. |
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| Author Affiliation: | Department of Entomology, Pennsylvania State University, University Park, PA |
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| Title: | Timing effect on performance of RHO345, Merit 75WP, Tempo 2 and Dursban Pro for management of black cutworm of creeping bentgrass, 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. 348-349. |
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| Publishing Information: | Annapolis, MD: Entomological Society of America |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Application timing; Experimental products; Imidacloprid; Cyfluthrin; Chlorpyrifos; Insect control; Agrotis ipsilon; Agrostis stolonifera; Application rates
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| Abstract/Contents: | "Treatment plots were 6 X 10 ft arranged in a RCB design and replicated 4 times at University Park, PA. Liquid formulations were applied by using a CO² compressed air sprayer with 4 8002VS TeeJet nozzles mounted on a 6 ft boom, operating at 28 psi, and applied in 208 ml of water/60 ft₂ or delivering 0.92 gal/1,000 ft₂. At the 1st treatment on 23 Aug, the following soil and environmental conditions existed: air temperature, 66°F; soil temperature at 1 inch depth, 62°F; soil temperature at 2 inch depth, 64°F; RH, 97%; amount of thatch, 0.125-0.25 inch; soil textural class, sandy loam; soil particle size analysis: 58.2% sand, 33.9% silt, 7.9% clay; soil moisture (oven dry weight), 18.6%; organic matter, 2.7%; water pH, 7.0; soil pH, 6.8%; time of application, early morning; and clear skies. A total of 0.8 inch of rain fell between late evening on 23 Aug through early morning on 24 Aug. At the 2nd treatment on 6 Sep, the following soil and environmental conditions existed: air temperature, 67°F; soil temperature at 1 inch depth, 65°F; soil temperature at 2 inch depth, 65°F; RH, 87%; amount of thatch, 0.125-0.25 inch; soil textural class, sandy loam; soil particle size analysis: 58.2% sand, 33.9% silt, 7.9% clay; soil moisture (oven dry weight), 26.9%; organic matter, 2.8%; water pH, 7.0; soil pH, 6.4; time of application, early morning; and overcast skies. A total of 2.7 inches of rainfall was recorded over a 72-h interval following the second treatmenton 6 Sep; however, the area did have 8 h drying time prior to the latter rainfall. Evaluation was done on 9 Sep and 12 Sep by counting the number of black cutworm larvae flushed to the surface within a 1.0 yd₂ wood frame sampling area using a soap irritant drench of 30 ml Lemon Joy™ dishwashing detergent in 2 gal of water. An average of 16/yd₂ cutworm larvae was recorded on 4 Sep following infestation of the exerimental area with 2nd and 3rd instar black cutworms. The entire experiment area was covered with bird netting until posttreatment counts were recorded on 9 Sep. Seven treatments sampled on 9 Sep provided significant reduction of black cutworm larvae. Twelve treatments sampled on 12 Sep provided significant reduction of black cutworm larvae. Black cutworm populations started to collapse on 10 Sep as a result of heavy bird predation. No phytotoxicity was noted." |
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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):
Heller, P. R., and R. Walker. 1997. Timing effect on performance of RHO345, Merit 75WP, Tempo 2 and Dursban Pro for management of black cutworm of creeping bentgrass, 1996.. Arthropod Manage. Tests. 22:p. 348-349. |
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