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CURATIVE CONTROL OF HAIRY CHINCH BUGS IN LAWN TURF, 2004

CURATIVE CONTROL OF HAIRY CHINCH BUGS IN LAWN TURF, 2004 Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.G4 (G4) BLUEGRASS (KENTUCKY): Poa pratensis L. Jennifer Andon Department of Entomology The Ohio State University 2501 Carmack Rd. Columbus, OH 43210 Phone: (614) 292-3762 Fax: (614) 292-9783 Email: andon.1@osu.edu David J. Shetlar Email: shetlar.1@osu.edu Hairy chinch bug (HCB): Blissus leucopterus hirtus Montandon This study evaluated effectiveness of various insecticides for curative control of HCB compared to that of industry standard spray products. The test plots were located in a home lawn located in Pickerington, Ohio. Application treatments were made 25 Aug to plots 5 ft × 5 ft with no separation between replicates, arranged in a RCB design, replicated four times. Granules were applied with shaker jars. Liquid application treatments were made using a 3 ft wide CO pressurized sprayer with TeeJet 8004 nozzles at 20 PSI calibrated to deliver 1.5 gal/1000 ft . Facin was applied by putting the product measured for each plot into a 2 gal watering can and sprinkling it over individual plots. These plots received an additional 2 gal of water. No other post treatment irrigation was applied. Field conditions at time of 25 Aug applications were: turf – 90% Kentucky bluegrass, 10% perennial ryegrass and tall fescue, mowed at 3.0 inch, thatch-0.75-1.0 inch; soil – clay loam-rubble, slightly moist, moderate slope to south, turf showing slight drought and/or HCB stress, 68°F at 1 inch, 67°F at 3 inches; weather – air temp 74°F, sunny, 0-3 mph wind from southwest; pests – numerous HCB early instar nymphs and few adults were observed upon sampling in test area; second generation. Efficacy data were obtained 1, 10 and 21 Sep (7, 16 & 27 DAT, respectively) by collecting all stages of HCB that floated to the top of two 5-inch stainless steel cylinder driven into each plot Biased samples were taken by placing cylinders where HCB were found. If no insect were found after four attempts, the cylinders were placed randomly in the plot where green turf was present. The cylinders were then filled with water and the HCB removed with a paint brush and placed into ethanol during four minute periods until no further bugs floated to the surface. ANOVA was preformed on untransformed totals per plot and means separated by LSD at á= 0.05. All treatments provided significant reductions in HCB numbers during all three sampling dates, however, at 16 & 27 DAT, the populations in the Facin treatment plots appeared to be recovering, indicating the need for a second application at a10-14 day interval. Untreated check plots averaged 139.2, 260.4 & 263.1 HCB/ft at 7, 16 and 27 DAT respectively, which are considered moderately high populations. No phytotoxicity was observed after any of the treatments. This research was supported by industry gifts of research funding. 2a 2a 2a Avg/ft Avg/ft Avg/ft Treatment/ Rate 7 DAT 16 DAT 27 DAT Formulation lb(AI)/acre 1 Sep % control 10 Sep % control 21Sep % control Arena 50WP 0.2 6.4b 95 0.0c 100 0.9b 100 Arena 50WP 0.3 0.0b 100 7.3c 97 0.0b 100 Arena 50WP 0.4 2.8b 98 0.0c 100 0.0b 100 Arena 0.5G 0.2 7.3b 94 4.6c 98 0.0b 100 Arena 0.5G 0.3 5.5b 96 0.9c 100 0.0b 100 Arena 0.5G 0.4 0.0b 100 3.7c 99 0.0b 100 Facin 8.5oz/M 13.8b 90 38.5bc 85 1.9b 99 Facin 10 oz/M 25.7b 81 94.4b 64 76.1b 71 Talstar F 0.2 2.8b 98 5.5c 98 0.9b 100 Check --- 132.9a --- 260.4a ---a 263.1a --- Combined chinch bug nymphs + adults untransformed counts analyzed by ANOVA (P?0.001) for 7, 16 & 27 DAT, and means followed by the same letter in a column are not significantly different by LSD at á = 0.05. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

CURATIVE CONTROL OF HAIRY CHINCH BUGS IN LAWN TURF, 2004

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Oxford University Press
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2155-9856
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10.4182/amt.2012.G4
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Abstract

Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.G4 (G4) BLUEGRASS (KENTUCKY): Poa pratensis L. Jennifer Andon Department of Entomology The Ohio State University 2501 Carmack Rd. Columbus, OH 43210 Phone: (614) 292-3762 Fax: (614) 292-9783 Email: andon.1@osu.edu David J. Shetlar Email: shetlar.1@osu.edu Hairy chinch bug (HCB): Blissus leucopterus hirtus Montandon This study evaluated effectiveness of various insecticides for curative control of HCB compared to that of industry standard spray products. The test plots were located in a home lawn located in Pickerington, Ohio. Application treatments were made 25 Aug to plots 5 ft × 5 ft with no separation between replicates, arranged in a RCB design, replicated four times. Granules were applied with shaker jars. Liquid application treatments were made using a 3 ft wide CO pressurized sprayer with TeeJet 8004 nozzles at 20 PSI calibrated to deliver 1.5 gal/1000 ft . Facin was applied by putting the product measured for each plot into a 2 gal watering can and sprinkling it over individual plots. These plots received an additional 2 gal of water. No other post treatment irrigation was applied. Field conditions at time of 25 Aug applications were: turf – 90% Kentucky bluegrass, 10% perennial ryegrass and tall fescue, mowed at 3.0 inch, thatch-0.75-1.0 inch; soil – clay loam-rubble, slightly moist, moderate slope to south, turf showing slight drought and/or HCB stress, 68°F at 1 inch, 67°F at 3 inches; weather – air temp 74°F, sunny, 0-3 mph wind from southwest; pests – numerous HCB early instar nymphs and few adults were observed upon sampling in test area; second generation. Efficacy data were obtained 1, 10 and 21 Sep (7, 16 & 27 DAT, respectively) by collecting all stages of HCB that floated to the top of two 5-inch stainless steel cylinder driven into each plot Biased samples were taken by placing cylinders where HCB were found. If no insect were found after four attempts, the cylinders were placed randomly in the plot where green turf was present. The cylinders were then filled with water and the HCB removed with a paint brush and placed into ethanol during four minute periods until no further bugs floated to the surface. ANOVA was preformed on untransformed totals per plot and means separated by LSD at á= 0.05. All treatments provided significant reductions in HCB numbers during all three sampling dates, however, at 16 & 27 DAT, the populations in the Facin treatment plots appeared to be recovering, indicating the need for a second application at a10-14 day interval. Untreated check plots averaged 139.2, 260.4 & 263.1 HCB/ft at 7, 16 and 27 DAT respectively, which are considered moderately high populations. No phytotoxicity was observed after any of the treatments. This research was supported by industry gifts of research funding. 2a 2a 2a Avg/ft Avg/ft Avg/ft Treatment/ Rate 7 DAT 16 DAT 27 DAT Formulation lb(AI)/acre 1 Sep % control 10 Sep % control 21Sep % control Arena 50WP 0.2 6.4b 95 0.0c 100 0.9b 100 Arena 50WP 0.3 0.0b 100 7.3c 97 0.0b 100 Arena 50WP 0.4 2.8b 98 0.0c 100 0.0b 100 Arena 0.5G 0.2 7.3b 94 4.6c 98 0.0b 100 Arena 0.5G 0.3 5.5b 96 0.9c 100 0.0b 100 Arena 0.5G 0.4 0.0b 100 3.7c 99 0.0b 100 Facin 8.5oz/M 13.8b 90 38.5bc 85 1.9b 99 Facin 10 oz/M 25.7b 81 94.4b 64 76.1b 71 Talstar F 0.2 2.8b 98 5.5c 98 0.9b 100 Check --- 132.9a --- 260.4a ---a 263.1a --- Combined chinch bug nymphs + adults untransformed counts analyzed by ANOVA (P?0.001) for 7, 16 & 27 DAT, and means followed by the same letter in a column are not significantly different by LSD at á = 0.05.

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 2012

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