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Publication Type:
| Report |
Author(s): | Heller, P. R.;
Walker, R. |
Author Affiliation: | Department of Entomology, Pennsylvania State University, Uiversity Park, PA |
Title: | Management of black cutworn larvae with reduced rates of chlorpyrifos and experimental formulations on creeping bentgrass, 1996. |
Section: | Ornamentals Other records with the "Ornamentals" Section
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Source: | Arthropod Management Tests. Vol. 22, 1997, p. 347. |
Publishing Information: | Annapolis, MD: Entomological Society of America |
# of Pages: | 1 |
Keywords: | TIC Keywords: Detergents; Insect control; Agrotis ipsilon; Application rates; Chlorpyrifos; Experimental products; Agrostis stolonifera; Formulations
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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 using a CO² compressed air sprayer with 4 8002VS TeeJet nozzles mounted on an 6 ft boom, operating at 28 psi, and applied in 454 ml of water/60ft₂ or delivering 2.0 gal/1000 ft₂. Treatments were applied on 1 Aug following artificial infestationof the research area with 2nd and 3rd instar black cutworms. An average of 18/yd₂ cutworm larvae was recorded on 30 Jul prior to treatment. At treatment time (1 Aug), the following soil and environmental conditions existed: air temperature, 62°F:, soil temperature at 1 inch depth, 64°F; soil temperature at 2 inch depth, 63°F; RH, 90%; amount of thatch, 0.0625 inch; soil textural class, sandy loam; soil particle size analysis; 52.7% sand, 35.0% silt12.3% clay; soil moisture (oven dry weight), 25.1%; organic matter, 3.1% water pH, 7.0; soil pH, 6.9; time of application, early-morning; and clear skies. Post-treatment counts were recorded 2 DAT (3 Aug), 7 DAT (8 Aug), and 15 DAT (16 Aug) 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. All treatments provided significant reduction of black cutworm larvae 2 DAT and 16 DAT. All but the two reduced rates of chlorpyrifos provided significant reduction of black cutworm 7 DAT. No phytotoxicity was noted." |
Language: | English |
References: | 0 |
Note: | Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Heller, P. R., and R. Walker. 1997. Management of black cutworn larvae with reduced rates of chlorpyrifos and experimental formulations on creeping bentgrass, 1996.. Arthropod Manage. Tests. 22:p. 347. |
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