Effect of Date of Application on Efficacy of Entomopathogenic Nematodes Against Annual Bluegrass Weevils, Golf Course Fairway, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 285-285
Author(s):  
P. J. Vittum
Keyword(s):  
Entomopathogenic Nematodes ◽  
Golf Course ◽  
Annual Bluegrass

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 Control of the Black Turfgrass Ataenius Larvae on a Golf Course Fairway 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 273-274
Author(s):  
K. T. Power ◽  
D. J. Shetlar ◽  
H. D. Niemczyk ◽  
M. G. Belcher
Keyword(s):  
Granular Materials ◽  
Environmental Conditions ◽  
Golf Course ◽  
Efficacy Data ◽  
Annual Bluegrass ◽  
Experimental Area ◽  
Water Ph

Abstract The study was located on golf course fairway at Seville. Insecticides were applied 23 Jul to plots 10 × 10 ft (3.1 × 3.1 m) arranged in a RCB, replicated 4 times. Granular materials were applied using a drop spreader and shaker jar. Liquid treatments were applied with a CO2 sprayer with Teejet XR8008VS nozzles at 35 psi (2.46 kg/cm2) pressure that delivered a volume of 1 gal/1000 ft2 (407 liter/ha) and pythrethriods with a CO2 sprayer with Teejet 8010 nozzles at 35 psi (2.46 kg/cm2) pressure that delivered a volume of 2 gal/1000 ft2 (814 liter/ha). The experimental area was irrigated approximately V* inch (6 mm) of water using the golf course system. Environmental conditions at time of treatment were as follows. BTA: eggs, 1st and 2nd instars present, 60 larvae/ ft2. Turf: level, dry, 5A inch (16 mm) height, 70% bentgrass and 30% annual bluegrass. Thatch: dense, moist, % inch (2 cm). Soil, moist, 74°F at 1 inch (2.5 cm) and 72°F at 3 inch (7.6 cm). Weather: sunny, 81°F, 0 mph. Water: pH 4.6. Efficacy data taken 7 Jul (14 DAT) were based on the number of live larvae in six samples 4% inch (10.8 cm) in diam from each plot.

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.

Sign in / Sign up

Export Citation Format

Share Document