scholarly journals Evaluation of Beneficial Nematodes and Conventional Insecticides to Manage Black Cutworm on Creeping Bentgrass at the Valentine Turfgrass Research Center, University Park, Pa, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 273-273
Author(s):  
P. R. Heller ◽  
R. Walker
Keyword(s):  
Creeping Bentgrass ◽  
Research Center ◽  
Black Cutworm

Suppression of Black Cutworm Larvae with Spinosad, Bifenthrin, Chlorpyrifos, and Experimental Formulations on Creeping Bentgrass, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 312-313 ◽  
Author(s):  
P. R. Heller ◽  
R. Walker
Keyword(s):  
Soil Temperature ◽  
Treatment Time ◽  
Sandy Loam ◽  
Creeping Bentgrass ◽  
Weight Percent ◽  
Early Morning ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Black Cutworm ◽  
Time Of Application

Abstract Treatment plots were 6 x 8 ft, arranged in a RCB design and replicated 4 times. White PVC cylinders (8-inch diam x 6 inch length) were placed in each replicate and secured in place. One cylinder was placed in each replicate per evaluation period (28 Jul and 30 Jul). Fifteen 0.125-inch black cutworm larvae were placed in each cylinder on 22 Jul. Bird netting was placed over the experimental area from 22 Jul through 28 Jul to prevent bird predation. Liquid formulations were applied by using a CO2 compressed-air sprayer with 4 8002VS Tee-Jet nozzles mounted on a 6-ft boom, operating at 28 psi, and applied in 363 ml of water/48 ft2 or delivering 2.0 gal/1,000 ft2. At treatment time (25 Jul), the following soil and environmental conditions existed: air temperature, 63° F; soil temperature at 1 inch depth, 62° F; soil temperature at 2-inch depth, 60° F; RH, 96%; amount of thatch, 0.125 inch; soil textural class, sandy loam; soil particle size analysis: 61.3% sand, 27.7% silt, 11.0% clay; soil percent water weight (percent by weight), 24.2%; organic matter, 5.2%; water pH, 7.0; soil pH, 6.8; time of application, early morning; and overcast skies. A total of 2.8 inches of rainfall or irrigation was recorded from 22 Jul through 25 Jul; a total of 0.3 inch rainfall or irrigation was recorded from 25 Jul through 26 Jul; and a total of 1.0 inch rainfall or irrigation was recorded from 27 Jul through 30 Jul. Efficacy data were recorded on 28 Jul and 30 Jul by counting the number of black cutworm larvae flushed to the surface within each PVC cylinder by using a soap irritant drench.

scholarly journals Efficacy of Spinosad and Standards for Control of Small Black Cutworm Larvae, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 317-317
Author(s):  
D. J. Shetlar ◽  
K. McClure ◽  
H. D. Niemczyk
Keyword(s):  
Stainless Steel ◽  
Creeping Bentgrass ◽  
Steel Cylinder ◽  
Black Cutworm ◽  
Stainless Steel Cylinder ◽  
Dishwashing Detergent ◽  
Research And Education

Abstract The study was located on bentgrass range 1 north at the Ohio State Turfgrass Research and Education Center, Columbus, OH. Treatments were applied on 19 Aug to plots 4 X 6 ft arranged in a RCB, replicated 4 times. Liquid treatments were applied using a CO2 sprayer calibrated to deliver 2.0 gal/1000ft2. No immediate posttreatment irrigation was applied. The 100% creeping bentgrass range was mowed at 0.5 inch, had no thatch and was irrigated daily with 0.25 inch of water between (05:00 and 06:00). On 19 Aug, one 8-inch stainless steel cylinder was driven into the turf, about 2 hr after the last spraying to allow for complete drying of all treatments. Each cylinder was infested with eight 3rd- and 4th-instar BCW (0.375 to 0.5 inch) and covered with nylon screen. On 22 Aug (3 DAT) the covers were removed and each cylinder was flooded with a soapy water mix (15 ml Joy dishwashing detergent in 1.0 gal water) to flush out any live BCW.

scholarly journals Evaluation of Talstar, Dursban, and Experimental Formulations to Manage Black Cutworm on Creeping Bentgrass at the Valentine Turfgrass Research Center, University Park, Pennsylvania, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 322-324
Author(s):  
P. R. Heller ◽  
R. Walker
Keyword(s):  
Soil Temperature ◽  
Treatment Time ◽  
Creeping Bentgrass ◽  
Dry Weight ◽  
Early Morning ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Black Cutworm ◽  
Time Of Application ◽  
Loamy Sand Soil

Abstract Treat-ment plots were 10 X 8 ft, arranged in a RCB design, replicated 4 times. Liquid formulations were applied by using a CO2 compressed air sprayer with 6 8002VS TeeJet nozzles mounted on an 8 ft boom, operating at 28 psi, and applied in 756 ml of water/80 ft2 or delivering 2.5 gal/1,000 ft?2. At treatment time (24 Jul), the following soil and environmental conditions existed: air temperature, 75°F; soil temperature at 1 inch depth, 78°F; soil temperature at 2 inch depth, 74°F; RH, 83%; amount of thatch, 0.125 inch; soil textural class, loamy sand; soil particle size analysis: 80.0% sand, 11.5% silt, 8.5% clay; soil moisture (oven dry weight), 31%; organic matter, 3.4%; water pH, 7.0; soil pH, 6.6; time of application, early morning; and overcast skies. The area was irrigated in with 0.1 inch of water immediately after treatment (24 Jul). Efficacy data was recorded 3 DAT and 7 DAT by counting the number of black cutworm larvae flushed to the surface within a 1.0 yd2 wood frame sampling area using a soap irritant drench of 15 ml Lemon Joy™dishwashing detergent in 2 gal of water.

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