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(G35) FESCUE (FINE LEAFED): Festuca spp. SUMMER MANAGEMENT OF HAIRY CHINCH BUG WITH TALSTAR EZ AND CYLFLUTHRIN FORMULATIONS ON ESTABLISHED FESCUE TURFGRASS, 2002 P. R. Heller Department of Entomology Pennsylvania State University University Park, PA 16802 Phone: (814) 865-53008 Fax: (814) 865-3048 E-mail: prh@psu.edu R. Walker E-mail: rgw7@psu.edu Hairy chinch bug (HCB): Blissus leucopterus hirtus Montandon This experiment was conducted to compare the effectiveness of Talstar EZ and Advanced Lawn Power Force (0.1% cyfluthrin) on a natural HCB population without post treatment irrigation. The turfgrass area consisted primarily of fine leafed fescue. Treatment plots were 5 × 6 ft arranged in a RCB design and replicated three times. Granular formulations were applied with a hand held shaker with top dressing sand used to provide even distribution of product. At treatment time (20 Jun) the following soil and environmental conditions existed: air temperature, 78°F; soil temperature at 1 inch depth, 76°F; soil temperature at 2 inch depth, 75°F; RH, 74%; amount of thatch, 0.75 inch; soil textural class, silt loam; soil particle size analysis: 43.6% sand, 51.6% silt, 4.8% clay; percent water content (percent by wt), 19.9%; organic matter, 5.4%; water pH, 7.0; CEC (meg/100 g), 9.4; soil pH, 5.6; application time, early afternoon; soil and thatch moist; and sunny skies. The experimental area was not irrigated after treatment. A natural occurring HCB population sampled on 20 Jun averaged 9.2 HCB life stages ft . HCB first instar nymphs represented 80% of the population sampled. HCB were sampled by driving a six inch-diameter stainless steel cylinder into the turf, filling it with water, and counting the number of HCB nymphs and adults floating to the surface during a 10 min period on 11 Jul (21 DAT). Two floatation samples were taken randomly from each replicate, and the total no. of HCB from each sample was recorded and converted to a ft count. Data were analyzed using WD (P ≤ 0.05). Post-treatment counts completed on 11 Jul indicated that both treatments, respectively Talstar EZ and Advanced Lawn Power Force Multi-Insect Killer provided significant control. No phytotoxicity was noted.
Arthropod Management Tests – Oxford University Press
Published: Jan 1, 2004
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