scholarly journals Efficacy of Entomopathogenic Nematodes Against Annual Bluegrass Weevil on a Golf Course Fairway, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 313-313
Author(s):  
Stanley R. Swier
Keyword(s):  
Soil Temperature ◽  
Soil Ph ◽  
Entomopathogenic Nematodes ◽  
Golf Course ◽  
Annual Bluegrass ◽  
Time Of Application ◽  
Plot Size ◽  
Annual Bluegrass Weevil

Abstract One rate of Exhibit (Steinonema carpocapsae) was compared to the standard Dursban for control of annual bluegrass weevil on a golf course fairway in Rutland, VT. Treatments were applied 21 Jun and rated 30 Jun. Plot size was 10 × 10 ft in a RCB design with a 3 ft buffer between plots. Treatments were applied with a watering can at a volume of 3.5 gal/1000 ft2. Treatments were applied between 1000 and 1400 h. All plots were immediately watered in with 0.2 inches water after application. Plots were evaluated by removing 3 plugs (0.1 ft2) per plot and counting larvae and pupae in the laboratory. At the time of sampling, the population was predominantly 5th instar and pupae. At the time of application conditions were: soil temperature at 1 inch depth, 70.5°F; thatch 0.25 inch; soil pH, 4.8; texture, loam, 47% sand, 43% silt, 10% clay; OM, 7.5%; moisture, 26.7%; sky, cloudy; air temp, 75.1°F; previous 24 hr precipitation, 0.7 inch. Data were converted to larvae/ft2.

scholarly journals Efficacy of Merit Against Annual Bluegrass Weevil, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 315-315
Author(s):  
Stanley R. Swier
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Sandy Loam ◽  
Golf Course ◽  
Annual Bluegrass ◽  
Plot Size ◽  
Loam Soil ◽  
Water Treatments ◽  
Annual Bluegrass Weevil

Abstract Two rates of Merit WP were compared for efficacy against the annual bluegrass weevil on golf course greens in Keene, NH. Plot size was 10 × 20 ft arranged in a RCB replicated 4 times. Treatments were applied 5 May and rated 28 Jun. Treatments were applied with a backpack sprayer in a volume of 1.4 gal water/1000 ft2. After application, treatments were irrigated with 0.25 inches water. Treatments were rated by removing 3 (0.1 ft2) samples per plot and counting live larvae in the laboratory. Conditions at the time of treatment were: air temperature, 58.1°F; soil temperature, 1 in 56°F; thatch depth, 0.25 inch; soil pH, 5.9; soil texture, sandy loam; soil organic matter, 5.2%; soil moisture, 22%.

scholarly journals Control of Black Cutworm on Greens 1992

1994 ◽  
Vol 19 (1) ◽  
pp. 304-304
Author(s):  
Stanley R. Swier ◽  
John S. Weaver
Keyword(s):  
Experimental Design ◽  
Soil Temperature ◽  
Air Temperature ◽  
Soil Texture ◽  
Soap Solution ◽  
Sandy Loam ◽  
Golf Course ◽  
Feeding Damage ◽  
Black Cutworm ◽  
Time Of Application

Abstract The experiment was conducted on a golf course nursery. The experimental design was an RCB, replicated 4 times, with 6 ft × 6 ft plots. Treatments were applied 13 Aug and rated 20 Aug. Liquid treatments were applied with a watering can and granular treatments with a salt shaker applicator. Dylox was watered in with 2 gal/plot. Neem was not watered in. The BCW were predominantly 5th instar. Although neem dried on the foliage, the weather was cool and damp for 3 DAT. Conditions at the time of application were: air temperature, 68.2°F; soil temperature, 65.5°F; thatch depth, 0.75 inch; soil texture, sandy loam. Plots were rated by flushing the plot with a soap solution and counting the emerging BCW. Plots could not be rated for feeding damage due to excessive disease.

scholarly journals Control of Annual Bluegrass Weevil With Entomophagous Nematodes, 1994:

1996 ◽  
Vol 21 (1) ◽  
pp. 343-344
Author(s):  
Stanley R. Swier
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Clay Soil ◽  
Golf Course ◽  
Efficacy Trial ◽  
Annual Bluegrass ◽  
Plot Size ◽  
Country Club ◽  
Large Plot

Abstract A large plot efficacy trial was conducted at Rutland Country Club, Rutland, VT on a golf course fairway. Plot size was 14 X 75 ft., arrayed in an RCB design, replicated 4 times. Treatments were applied 8 June at 0800 with an FMC hydraulic sprayer using 8004 nozzles delivering 3.6 gal. water/1000 ft2. Within 30 minutes of application, 0.2 inch irrigation water was applied to the plots. Plots were 60% annual bluegrass and 40% bentgrass. Larvae were predominantly third instar. Plots were rated at 7 and 14 DAT. Five cup cutter plugs were then taken per plot and analyzed in the lab. The number of live larvae were recorded. Conditions at the time of treatment were: air temperature 64.4°F; wind, 2 MPH; sky, clear; soil temperature, 1 inch –66°F; thatch depth, 0.25 inch soil pH, 5.2; slope, 3%; soil texture, loam: 48% sand, 42% silt, 10% clay; soil organic matter, 7.5%; soil moisture, 21.3%; post-treatment precipitation, 0.2 inch every other day.

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