scholarly journals Spring Application of Conventional and Biorational Insecticides for Control of Sod Webworms, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 354-355
Author(s):  
F.P. Baxendale ◽  
A.P. Weinhold ◽  
J. Schild ◽  
T. Merrigan
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Experimental Design ◽  
Tall Fescue ◽  
Weather Conditions ◽  
Kentucky Bluegrass ◽  
Silt Loam ◽  
Plot Area ◽  
Loam Soil

Abstract Insecticides were evaluated for control of sod webworm larvae on a Kentucky bluegrass lawn at the Gering Cemetery, in Scotts Bluff County, Nebraska. The turf (80% Kentucky bluegrass, 20% perennial rye and tall fescue) was maintained at a mowing height of 2.5 inches. Thatch accumulation (finger compressed) in the plot area was 0.5 inch. Field conditions at the study site were: soil type, silt loam; soil organic matter, 2.3%; soil pH, 8.4. Weather conditions at the time of treatment were as follows: soil moisture 16% by wt; air temperature 70°F; soil temperature 62°F; relative humidity 29%; wind direction and velocity 157° at 11 mph. Plots were 7 x 7 ft and the experimental design was a RCB with 3 replications. Treatments were applied on 6 May. Liquid insecticides were applied using a CO, sprayer with a TeeJet® 8002 nozzle at 30 psi and delivering 2 gal finished spray/1000 ft2. Following applications, plots were irrigated with 0.125 inches of water. A total of 0.67 inch of rain fell during the post-treatment period. Treatments were evaluated 3,7, and 14 DAT (10, 14, and 21 May) by mixing 0.5 oz of Lemon Dawn® per gal of water and applying one gal of the dilution to each of two 6 ft sampling areas per plot (12.0 ft2 total area). Larvae that moved to the grass surface after twenty minutes, were collected and counted.

scholarly journals Selected Rates of Conventional and Biorational Insecticides for Early Season Sod Webworm Control, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 340-341
Author(s):  
A. P. Weinhold ◽  
F. P. Baxendale ◽  
J. Schild ◽  
T. Merrigan
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Soil Organic Matter ◽  
Tall Fescue ◽  
Weather Conditions ◽  
Kentucky Bluegrass ◽  
Silt Loam ◽  
Time Of Application ◽  
Plot Area ◽  
Loam Soil

Abstract Insecticides were evaluated for control of sod webworm larvae on a Kentucky bluegrass lawn at the Gering Cemetery, in Scotts Bluff County, Nebraska. The turf (80% Kentucky bluegrass, 20% perennial rye and tall fescue) was maintained at a mowing height of 2.5 inches. Thatch accumulation (finger compressed) in the plot area was 0.5 inches. Field conditions at the study site were: soil type, silt loam; soil organic matter, 2.3%; soil pH, 8.4. Weather conditions at the time of application were as follows: soil moisture 22% by wt; air temperature 71°F; soil temperature 70°F; relative humidity : 27%; wind direction and velocity 108° at 7 mph. Plots were 6 X 10 ft and the experimental design was a RCB with 4 replications. Treatments were applied on 5 May. Liquid insecticides were applied using a CO2 sprayer with a TeeJet® 8002 nozzle at 30 psi and delivering 87 gpa finished spray. Following applications, plots were irrigated with 0.25 inches of water. No rain fell during the post-treatment period. Treatments were evaluated 3, 7, and 14 DAT (8, 12, and 19 May) by mixing 0.5 oz Lemon Dawn® per gal of water and applying 2 gal of the dilution to each of two 6 ft sampling areas per plot (12.0 ft2 total area). Larvae that moved to the grass surface after 30 minutes were collected and counted.

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 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.

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 Application Timing of Insecticides for Control of Annual White Grubs on a Golf Course Rough, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 372-372
Author(s):  
A.P. Weinhold ◽  
F.P. Baxendale ◽  
K.A. Weinhold
Keyword(s):  
Organic Matter ◽  
Kentucky Bluegrass ◽  
Golf Course ◽  
Soil Cores ◽  
White Grubs ◽  
Application Timing ◽  
Time Of Application ◽  
Water Ph ◽  
Plot Area ◽  
Loam Soil

Abstract This study was conducted in Lincoln, NE on a golf course rough. The turf (50% Kentucky bluegrass and 50% perennial rye) was maintained at a mowing height of 2.0 inches. Thatch accumulation (finger compressed) in the plot area was 0.75 inches. Field conditions at the study site were: soil type, silty cla> loam; soil organic matter, 3.5%; soil pH, 6.5; water pH, 7.0. Environmental conditions at the time of application on 18 Jun, 09 Jul, and 06 Aug were, respectively, as follows: soil moisture 20%, 19%, and 20% by wt; air temperature 81°F, 74°F, and 87°F; soil temperature 72°F, 74°F, and 77°F; relative humidity 63%, 39%, and 66%; wind direction and velocity 155° at 3 mph., 22° at 6 mph, 204° at 12 mph. Plots were 6 X 10 ft and the experimental design was a RCB with 3 replications. Liquid insecticides were applied using a CO2 sprayer with a TeeJet® 8002 nozzle at 30 psi and delivering 2 gal/1000 ft2 Following applications, plots were irrigated with 0.35 inch water. Post-treatment precipitation totaled 13.71 inches. Treatments were evaluated 77 days after the first application on 3 Sep by removing from each plot three, 8-inch diam turf-soil cores (1.05 ft2 total area) to a depth of 3 inches and counting the number of surviving grubs

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.

Atrazine-Soil Organic Matter Interactions

Weed Science ◽  
1971 ◽  
Vol 19 (3) ◽  
pp. 279-282 ◽  
Author(s):  
E. P. Dunigan ◽  
T. H. McIntosh
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Soil Organic Matter ◽  
Hot Water ◽  
Adsorptive Capacity ◽  
Silt Loam ◽  
Adsorption Capacities ◽  
Loam Soil ◽  
Water Extractable ◽  
Weak Chemical

Adsorption capacities of Walla Walla silt loam soil for 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) were determined after each extraction with ethyl ether, ethyl alcohol, and hot water. The results suggested that the ether and alcohol-extractable components of the soil organic matter, i.e. fats, oils, waxes, and resins, had a negligible capacity to adsorb atrazine but that hot-water-extractable materials, i.e. polysaccharides, had a small adsorptive capacity. of the compounds chosen to be representative of some soil organic matter components, polysaccharide types had low affinities, a protein and a nucleic acid had intermediate affinities, and humic acid, lignin, and quinizarin had high affinities for atrazine. Comparison of adsorption isotherms of atrazine to lignin and humic acid at 25 and 62 C suggested that a weak chemical bond may contribute to retention of the herbicide by soil organic matter. Nearly quantitative desorption of atrazine from native and calcium saturated soils was affected by repeated water extraction.

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%.

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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