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Arthropod Management Tests, 2016, 1–1 doi: 10.1093/amt/tsw108 Section G: Ornamentals & Turf CREEPING BENTGRASS: Agrostis stolonifera, BLUEGRASS (ANNUAL): Poa annua L. Control of the Annual Bluegrass Weevil on a Golf Course Fairway, 2015* 1,2 1 David J. Shetlar and Jennifer Andon Department of Entomology, The Ohio State University, 2501 Carmack Rd, Columbus, OH 43210. Phone: (614) 292-3762, Fax: (614) 292-9783 (shetlar.1@osu.edu; andon.1@osu.edu) and Corresponding author, e-mail: shetlar.1@osu.edu Section Editor: Carlos Bogran Bluegrass j Poa spp. Creeping bentgrass j Agrostis stolonifera Annual bluegrass weevil (ABW): Listronotus maculicollis (Dietz) This study was conducted to evaluate repeat applications of two 78 F at 1 in., 75 F at 3 in.; weather—air temp 87 F, mostly sunny, insecticides for control of ABW on a golf course fairway. The test was 3–5 mph wind from north northwest; pests—adults (detergent flush) located along the east side of fairway #6, at The Country Club, and larvae (turf cores examined) were present in fairway. Efficacy Pepper Pike, Ohio. Treatments were applied 22 May and 10 Jun to data were obtained 24 Jun (33 and 14 DAT, respectively) by taking plots 5 8 ft. arranged in an RCB design replicated four times. twenty 1.4-in. cores using a Duich Ball Marck Plugger (Turf Tec Liquid treatments were applied using a 3–ft. wide (spray 4–ft. width) International) from within the annual bluegrass of each plot, where CO pressurized sprayer with TeeJet 8004 nozzles at 20 psi calibrated Poa annua was present. The turf-soil samples were completely broken to deliver 2.0 gal/1,000 ft . Plots received daily irrigation with the apart over a plastic tub filled with a saturated salt solution and fairway system. Field conditions at time of 22 May applications were: allowed to soak. Any ABW larvae, pupae, and adults (teneral and turf—70% bentgrass and 30% annual bluegrass, mowed at 3/8 in., old) found floating were recorded. ANOVA was performed on un- thatch—0.25–0.5 in.; soil—sandy loam, moist, generally sloping to transformed totals per plot and means separated by LSD at a ¼ 0.05. the south, 65 F at 1 in., 58 F at 3 in.; weather—air temp 60 F, clear, All treatments provided significant control, regardless of application 3–5 mph wind from north; pests—generally infested in 2012–2015, date. Untreated checks had an average of 29.5 ABW larvae per ft , adults were present in fairway (confirmed by detergent flush). Field which is considered to be a moderate population. No phytotoxicity conditions at time of 10 Jun applications were: turf—same as above, was observed after any of the treatments (Table 1). Table 1 2a Treatment/Formulation Rate Amt/Acre Appl. Date Avg/ft % control 1. Conserve SC 46.0 fl oz 30 May & 10 Jun 0.0b 100.0 2. Blackhawk WG 1.0 lb 30 May & 10 Jun 0.9b 97.0 3. Conserve SC 54.0 fl oz 30 May & 10 Jun 0.0b 100.0 4. Blackhawk WG 1.14 lb 30 May & 10 Jun 0.0b 100.0 5. Aloft GCSC 14.4 fl oz 30 May 0.0b 100.0 6. Check – – 29.5a – Combined larvae, pupae, and new adults untransformed counts analyzed by ANOVA (P 0.001), and means followed by the same letter in a column are not significantly different by LSD ¼ 0.05. Data taken 24 Jun. * This research was supported by industry gifts of research funding. V C The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America. 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
Arthropod Management Tests – Oxford University Press
Published: Jan 1, 2016
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