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WHITE GRUB CONTROL ON GOLF COURSE ROUGH, 2002

WHITE GRUB CONTROL ON GOLF COURSE ROUGH, 2002 (G16) BLUEGRASS (KENTUCKY): Poa pratensis L. D. R. Smitley Department of Entomology Michigan State University East Lansing, MI 48824-1115 Tel: (517) 353-9672 Fax: (517) 353-4354 tdavis@msu.edu T. W. Davis European chafer (EC): Rhizotrogus majalis (Razoumowski) Japanese beetle (JB): Popillia japonica (Newman) An area of non-irrigated rough at The Country Club of Jackson in Jackson County, MI was used for this test. The 4 ft x 4 ft plots were separated by a 2 ft-wide buffer strip. The area in which the test was conducted had been infested with European chafer (EC) grubs for more than 10 yr and Japanese beetle (JB) grubs for the last 8 yr. The treatments were all replicated six times and were blocked from one end of the field to the other. Plots were established on 5 Jun. Treatments were applied on one of the following dates: 5 Jun, 12 Jul, 14 Aug or 6 Sep. L.treatments were applied at 50 psi through a single nozzle hand-held R & D Sprayers CO sprayer with an 8003 nozzle at a rate of 175 gpa of finished S. Granular treatments were applied with a hand-held shaker. Treatments were made between 9:30 am and 1:00 pm. All plots treated on a particular day were watered with 0.25 inch of irrigation after each set of applications were applied with a watering wand from the Specialty Mfg Co. of St. Paul, MN. Replications 1-3 were sampled on 8 Oct and replications 4-6 were sampled on 17 Oct by digging 2 ft from each plot. All of the grubs were returned to the lab to be identified under the microscope because many of the JB grubs were too small for field identification. Data were transformed log(x + 1) prior to ANOVA. A Fisher's protected LSD was used to evaluate means. The summer of 2002 was extremely dry. The turf in the plots showed damage in all of the treatments due to drought stress. Mach II 1.5G, Meridian 25WDG and Merit 75W all gave excellent control. The Mach II 2SC, Mach II 1.32G, and both rates of V10112 20SG applied on 14 Aug also gave superior results. Timing of the V10112 treatments seems to be imperative as the chemical from the Jun application was not still viable to kill the grubs when they hatched and became active in late Jul and Aug. Both rates of the V10112 gave similar control when applied on the same day. The Aug application of V10112 was superior to the Jul or Sep treatments. Sevin SL at 4 lb AI and the Dylox 6.26 treatment gave 60-65% population reduction, while the Sevin SL 8 lb AI treatment gave 80% reduction of all grubs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

WHITE GRUB CONTROL ON GOLF COURSE ROUGH, 2002

Smitley, D. R.; Davis, T. W.
Arthropod Management Tests , Volume 28 (1) – Jan 1, 2003
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Oxford University Press
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2155-9856
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10.1093/amt/28.1.G16
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Abstract

(G16) BLUEGRASS (KENTUCKY): Poa pratensis L. D. R. Smitley Department of Entomology Michigan State University East Lansing, MI 48824-1115 Tel: (517) 353-9672 Fax: (517) 353-4354 tdavis@msu.edu T. W. Davis European chafer (EC): Rhizotrogus majalis (Razoumowski) Japanese beetle (JB): Popillia japonica (Newman) An area of non-irrigated rough at The Country Club of Jackson in Jackson County, MI was used for this test. The 4 ft x 4 ft plots were separated by a 2 ft-wide buffer strip. The area in which the test was conducted had been infested with European chafer (EC) grubs for more than 10 yr and Japanese beetle (JB) grubs for the last 8 yr. The treatments were all replicated six times and were blocked from one end of the field to the other. Plots were established on 5 Jun. Treatments were applied on one of the following dates: 5 Jun, 12 Jul, 14 Aug or 6 Sep. L.treatments were applied at 50 psi through a single nozzle hand-held R & D Sprayers CO sprayer with an 8003 nozzle at a rate of 175 gpa of finished S. Granular treatments were applied with a hand-held shaker. Treatments were made between 9:30 am and 1:00 pm. All plots treated on a particular day were watered with 0.25 inch of irrigation after each set of applications were applied with a watering wand from the Specialty Mfg Co. of St. Paul, MN. Replications 1-3 were sampled on 8 Oct and replications 4-6 were sampled on 17 Oct by digging 2 ft from each plot. All of the grubs were returned to the lab to be identified under the microscope because many of the JB grubs were too small for field identification. Data were transformed log(x + 1) prior to ANOVA. A Fisher's protected LSD was used to evaluate means. The summer of 2002 was extremely dry. The turf in the plots showed damage in all of the treatments due to drought stress. Mach II 1.5G, Meridian 25WDG and Merit 75W all gave excellent control. The Mach II 2SC, Mach II 1.32G, and both rates of V10112 20SG applied on 14 Aug also gave superior results. Timing of the V10112 treatments seems to be imperative as the chemical from the Jun application was not still viable to kill the grubs when they hatched and became active in late Jul and Aug. Both rates of the V10112 gave similar control when applied on the same day. The Aug application of V10112 was superior to the Jul or Sep treatments. Sevin SL at 4 lb AI and the Dylox 6.26 treatment gave 60-65% population reduction, while the Sevin SL 8 lb AI treatment gave 80% reduction of all grubs.

Journal

Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2003

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