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SELECTED RATES OF DPX-MP062 FOR FIRST GENERATION SOD WEBWORM CONTROL, 2002

SELECTED RATES OF DPX-MP062 FOR FIRST GENERATION SOD WEBWORM CONTROL, 2002 (G10) BLUEGRASS (KENTUCKY): Poa Pratensis L. SELECTED RATES OF DPX-MP062 FOR FIRST GENERATION SOD WEBWORM CONTROL, T. E. Eickhoff Department of Entomology University of Nebraska-Lincoln 202 Plant Industry Bldg P. O. Box 830816 Lincoln, NE 68583-0816 Tel: (402) 472-8702 Fax: (402) 472-4687 teickhof@unlserve.unl.edu W. G. Anderson Tel: (402) 472-8683 wanderso@unlserve.unl.edu F. P. Baxendale Tel: (402) 472-8699 fbaxendale1@unl.edu Sod webworm (SW): Crambus (sp.) Insecticides were evaluated for control of Sod webworms (SW) on Kentucky bluegrass research plots at the University of Nebraska JSA Research Facility near Mead Nebraska. The turf (100% Kentucky bluegrass) was maintained at a height of 2.5 inches. Thatch accumulation in the plot area was 0.6 inches. Field conditions at the study site were: soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6-7; water pH, 7.0. Environmental conditions at the time of treatment were as follows: soil moisture 12.0%; air temp 68ºF; soil temp 78ºF; relative humidity 79%; wind direction and velocity 356º at 6 mph. Plots were 8 x 8 ft and the experimental design was a RCB with four replications. Insecticide treatments were applied on 11 Jul 2002. Liquid insecticides were applied using a CO sprayer with a TeeJet 8002 nozzle at 40 psi and delivering 131 gpa formulation. Following application, plots were irrigated with approximately 0.25 inch of water. A total of 0.44 inch of rain accumulated during the post-treatment period. Treatments were evaluated 4 DAT (15 Jul) by mixing 0.5 oz of lemon-scented dish soap per gal of water 2 2 and applying 4.0 gal of water over each of two 6 ft sampling areas/plot (12 ft total area). Larvae that moved to the surface within 30 min were counted. Means were seperated by using LSD. All rates of DPX-MP062 provided statistically significant SW control when compared to the untreated check. The higher rates (0.125 and 0.250) of DPX-MP062 provided excellent control (>92%). No phytotoxicity was observed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

SELECTED RATES OF DPX-MP062 FOR FIRST GENERATION SOD WEBWORM CONTROL, 2002

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Publisher
Oxford University Press
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© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.1093/amt/28.1.G10
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Abstract

(G10) BLUEGRASS (KENTUCKY): Poa Pratensis L. SELECTED RATES OF DPX-MP062 FOR FIRST GENERATION SOD WEBWORM CONTROL, T. E. Eickhoff Department of Entomology University of Nebraska-Lincoln 202 Plant Industry Bldg P. O. Box 830816 Lincoln, NE 68583-0816 Tel: (402) 472-8702 Fax: (402) 472-4687 teickhof@unlserve.unl.edu W. G. Anderson Tel: (402) 472-8683 wanderso@unlserve.unl.edu F. P. Baxendale Tel: (402) 472-8699 fbaxendale1@unl.edu Sod webworm (SW): Crambus (sp.) Insecticides were evaluated for control of Sod webworms (SW) on Kentucky bluegrass research plots at the University of Nebraska JSA Research Facility near Mead Nebraska. The turf (100% Kentucky bluegrass) was maintained at a height of 2.5 inches. Thatch accumulation in the plot area was 0.6 inches. Field conditions at the study site were: soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6-7; water pH, 7.0. Environmental conditions at the time of treatment were as follows: soil moisture 12.0%; air temp 68ºF; soil temp 78ºF; relative humidity 79%; wind direction and velocity 356º at 6 mph. Plots were 8 x 8 ft and the experimental design was a RCB with four replications. Insecticide treatments were applied on 11 Jul 2002. Liquid insecticides were applied using a CO sprayer with a TeeJet 8002 nozzle at 40 psi and delivering 131 gpa formulation. Following application, plots were irrigated with approximately 0.25 inch of water. A total of 0.44 inch of rain accumulated during the post-treatment period. Treatments were evaluated 4 DAT (15 Jul) by mixing 0.5 oz of lemon-scented dish soap per gal of water 2 2 and applying 4.0 gal of water over each of two 6 ft sampling areas/plot (12 ft total area). Larvae that moved to the surface within 30 min were counted. Means were seperated by using LSD. All rates of DPX-MP062 provided statistically significant SW control when compared to the untreated check. The higher rates (0.125 and 0.250) of DPX-MP062 provided excellent control (>92%). No phytotoxicity was observed.

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2003

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