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Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.G11 (G11) BLUEGRASS (KENTUCKY): Poa pratensis L. EVALUATION ACELEPRYN AND HGW86 GRANULAR FERTILIZER FORMULATIONS FOR CONTROL OF BILLBUGS, 2012 M. D. Stamm Department of Entomology University of Nebraska-Lincoln 103 Entomology Hall Lincoln, NE 68583-0816 Phone (402) 472-8702 Fax (402) 472-4687 Email: mstamm3@unl.edu L. S. Marchi E-mail: lia.marchi@huskers.unl.edu K. G. Koch E-mail: kylegkoch@gmail.com F. P. Baxendale Email: fbaxendale1@unl.edu Bluegrass billbug (BB): Sphenophorous parvulus Gyllenhal Insecticides were evaluated for control of billbugs at a Kentucky bluegrass research area at the John Seaton Anderson Research Facility near Mead, Nebraska. Treatments were applied 3 May 2012 to 5 x 5 ft plots arranged in RCB design with 4 replications. Granular products were uniformly applied using a hand shaker. All treatments were irrigated with 0.25 in of water within 24 hours of application. Formulations were evaluated 54 days after treatment (DAT) (26 June) by removing from each plot three, 8-inch diam turf-soil cores (1.05 ft² total area) to a depth of 3 inches and counting the number of billbug larvae and pupae. Plots were periodically assessed for phytotoxicity. Environmental conditions at the time of treatment were as follows: soil moisture 16.1%; air temp 70ºF; soil temp 65ºF; relative humidity 78%; wind velocity 8 mph. All treatments provided statistically significant reductions in billbug larvae and pupae when compared to the untreated control. Merit GranFert (150 lb/A), DPX-HGW86 0.043GF(175 lb/A) and HGW86 0.057GF (175 lb/A) provided excellent (≥85%) billbug control. No phytotoxicity was observed. Table 1. Treatment/ Rate Mean BB % Formulation lb/A 1.05 ft Control Merit GranFert 150 0.25 a 96.7 DPX-HWG86/ 0.043GF 175 0.75 a 90.0 DPX-HWG86/ 0.057GF 175 0.75 a 90.0 DPX-HWG86/ 0.029GF 175 1.50 a 80.0 Acelepryn 150 4.50 b 40.0 UTC --- 7.50 c --- Means followed by the same letter are not significantly different (P> 0.05, LSD=2.45).
Arthropod Management Tests – Oxford University Press
Published: Jan 1, 2013
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