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.

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 Full Season Control of Japanese Beetle Grub Control with Merit, NH, 1994

1996 ◽  
Vol 21 (1) ◽  
pp. 352-352
Author(s):  
Stanley R. Swier
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Air Temperature ◽  
Soil Ph ◽  
Soil Texture ◽  
Clay Soil ◽  
Golf Course ◽  
Silt Loam ◽  
Japanese Beetle

Abstract The trial was conducted 10 May on a golf course rough, Amherst, NH. Plots were 10 X 10 ft, replicated 4 times, in a RCB design. Merit WP was applied in 4 gal water/1000 ft2 with a watering, can. Merit G granules were applied with a homemade salt shaker. Treatments were irrigated with 0.5 inch water after application. Plots were rated 30 Sep by counting the number of live grubs per 1 ft2. Conditions at the time of treatment were: air temperature 70°F; wind, 3 MPH; sky, clear; soil temperature, 1 inch, 60°F; thatch depth, 0.5 inch soil pH, 5.4; slope 0%; soil texture, silt loam, 47% sand, 50% silt, 3% clay; soil organic matter, 6.9%; soil moisture, 21.8%.

scholarly journals Full Season Japanese Beetle Grub Control with Merit, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 313-314
Author(s):  
Stanley R. Swier
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Air Temperature ◽  
Soil Ph ◽  
Clay Soil ◽  
Sandy Loam ◽  
Golf Course ◽  
Japanese Beetle ◽  
Wettable Powder

Abstract Two formulations of Merit were compared for efficacy against Japanese beetle grubs on a golf course fairway in Amherst, NH. Plots were 10 × 10 ft, replicated 4 times in an RCB design. Treatments were applied 26 Apr and rated 24 Sep. The granular formulation was applied with a homemade salt shaker. The wettable powder was applied in a watering can at a volume of 5 gal water/1000 ft2. After application, plots were irrigated with 0.5 inches water. Plots were rated by counting the number of live grubs in a 3 ft2 sample. Conditions at the time of treatment were: air temperature, 53.3°F; soil temperature, 2 inches, 50.8°F; thatch depth, 0.5 inch; soil pH, 5.8; slope, 1%; soil texture, sandy loam, 53% sand, 43% silt, 4% clay; soil organic matter, 6.5% soil moisture, 19.4%.

scholarly journals Efficacy of Merit Against Annual Bluegrass Weevil, Nh, 1994

1996 ◽  
Vol 21 (1) ◽  
pp. 344-344
Author(s):  
Stanley R. Swier
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Air Temperature ◽  
Adult Emergence ◽  
Putting Greens ◽  
Light Rain ◽  
Annual Bluegrass ◽  
Country Club ◽  
Loam Soil

Abstract The trial was conducted at Hanover Country Club, Hanover, NH. Treatments were applied 3 May, at the beginning of adult emergence. The plots were 6 X 6 ft, replicated 4 times and randomly arranged along the collar of putting greens. Each plot was separated by a 3 ft buffer. Merit was applied with a CO2 backpack sprayer in 1.8 gal water/1000 ft2. After application treatments were irrigated with 0.5 inch water. Plots were rated 27 Jun by removing three, 0.1 ft2 plugs and counting live larvae in the laboratory. Conditions at the time of treatment were: air temperature 55°F; wind, 3 MPH; sky, cloudy; soil temperature, 50°F; thatch depth, 0.5 inch soil pH, 5.9; soil texture, loam; soil organic matter, 4%; soil moisture, 20%; post treatment precipitation, light rain.

scholarly journals Efficacy of Entomophagous Nematodes Against Japanese Beetle Grubs in Large Plot Trials, Nh, 1994

1996 ◽  
Vol 21 (1) ◽  
pp. 352-354
Author(s):  
Stanley R. Swier
Keyword(s):  
Soil Moisture ◽  
Soil Temperature ◽  
Air Temperature ◽  
Clay Soil ◽  
Post Treatment ◽  
Split Application ◽  
Japanese Beetle ◽  
Plot Size ◽  
Country Club ◽  
Large Plot

Abstract The large plot study was conducted at the Amherst Country Club, Amherst; NH. Plot size was 20 X 80 ft, replicated 4 times. Treatments were applied in 1 gal water/1000 ft2 with a Chem Pro sprayer using MC5 nozzles. Each plot was sprayed for a total volume of 2 gal/1000 ft2. The first treatments were applied in the evening on 19 Aug to predominantly 2nd instar larvae and watered in. The second half of the split application of Vector WG was applied on 9 Sep (21 days later). Plots were irrigated as necessary 2-3 times per week with 0.2 inch water to keep soil moist. Three 1 ft2 samples were removed from each plot and the number of live larvae counted. Conditions at the time of treatment on 19 Aug were: air temperature, 68.3°F; wind, <3 mph; sky, clear; soil temperature 2 inch, 69.3°F; thatch depth, 0.5 inch soil pH, 6.5; soil texture, loam, 38% sand, 45% silt, 17% clay; soil organic matter, 5.2%; soil moisture, 23.4%; post treatment precipitation, 0.3 inch soils were moist due to recent rain. Conditions at the time of treatment on 9 Sep were: air temperature, 72.3°F; wind, 0 mph; sky, clear; soil temperature 2 inch, 63.5°F; soil moisture, 25.6%; post treatment precipitation, 0.3 inch soils were moist due to recent rain. Plots were rated on 7 Oct (42 days after initial treatment).

Curative Black Cutworm Control With Merit and Fcr 4S4S, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 327-327
Author(s):  
Stanley R. Swier ◽  
Alan Rollins
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Air Temperature ◽  
Soil Ph ◽  
Soil Texture ◽  
Fourth Instar ◽  
Silt Loam ◽  
Black Cutworm ◽  
Country Club

Abstract Three treatments were applied to third and fourth instar BCW larvae at Amherst Country Club. Plots were 7 X 7 ft, replicated 4 times, in a RCB design. Treatments were applied 7 Sep and rated 14 Sep (7 DAT). Treatments were applied with a CO2 boom sprayer, 8004 nozzles, at 40 PSI, in 2 gal water per 10002. Plots were rated using a soap flush and counting the number of emerging larvae. Conditions at the time of treatment were: air temperature, 84.3°F; wind, calm; sky, cloudy; soil temperature, 77.3°F; thatch depth, 0.25 inch; soil pH, 5.7; slope, 0%; soil texture, silt loam: sand 40%, silt 59%, clay 1%; soil organic matter, 3.7%; soil moisture, 22.6%; post treatment precipitation, 0.1 inch daily; mowing height, 0.187 inch.

scholarly journals Control of Black Cutworm With Merit Used Preventatively and Pyrethroids Used Curatively, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 326-326
Author(s):  
Stanley R. Swier ◽  
Alan Rollins
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Experimental Design ◽  
Soil Temperature ◽  
Air Temperature ◽  
Soil Texture ◽  
Mixed Population ◽  
Black Cutworm ◽  
Plot Size

Abstract The experimental design was an RCB, replicated 4X, plot size was 7 X 7 ft. All treatments were applied with a CO2 boom sprayer, 8004 nozzles, at 40 PSI, in 2 gal water per 10002. All plots were lightly preirrigated. Merit was applied 3 Jul and irrigated (0.1 in). The remaining treatments were applied 31 Jul to a mixed population of 3-6 instar larvae and were not immediately watered. Plots were rated 7 Aug using a soap flush and counting live larvae. Conditions at the time of treatment on 3 Jul were: air temperature, 86.4°F; wind, calm; sky, clear; soil temperature, 90.6°F; thatch depth, 0.25 inch; slope, 0%; soil texture, loamy sand, sand 80%, silt 13%, clay 7%; soil organic matter, 1.7%; soil moisture 8%; post treatment precipitation, light irrigation daily; mowing height 0.125 inch.

Multi-algorithm comparison to predict soil organic matter and soil moisture content from cell phone images

Geoderma ◽  
2021 ◽  
Vol 385 ◽  
pp. 114863
Author(s):  
Perry Taneja ◽  
Hitesh Kumar Vasava ◽  
Prasad Daggupati ◽  
Asim Biswas
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Moisture Content ◽  
Cell Phone ◽  
Soil Moisture Content ◽  
Algorithm Comparison
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