scholarly journals Full Season Control of Japanese Beetle Grubs with Ntn, 1992

1994 ◽  
Vol 19 (1) ◽  
pp. 325-325
Author(s):  
Stanley R. Swier ◽  
John S. Weaver
Keyword(s):  
Soil Moisture ◽  
Soil Temperature ◽  
Golf Course ◽  
Silt Loam ◽  
Liquid Formulation ◽  
Japanese Beetle ◽  
Experimental Site ◽  
Time Of Application

Abstract An experiment was conducted to determine the efficacy of two formulations of NTN for full season control of JB grubs. The experimental site was a golf course fairway rough in Amherst, NH. The trial consisted of 10 × 10 ft plots, in an RCB design, replicated 4 times. The liquid formulation was applied in a watering can at a rate of 5 gal/1000 ft2. The granular formulation was applied with a homemade salt shaker type applicator. Plots received 0.5 inch of irrigation after application. Conditions at the time of application were: soil temperature, 1 inch, 81.1°F; 2 inches, 77.9°F; thatch, 0.75 inch; pH 5.6; texture, silt loam, sand 46%, silt 50%, clay 4%; soil moisture; 15%; OM, 10.1%. Treatments were applied 20 May and rated 28 Sep. Plots were rated by counting the number of live JB grubs per 2.25 ft2.

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 Control of Western Corn Rootworm Larvae in West Central Nebraska, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 227-227
Author(s):  
R. C. Seymour ◽  
J. B. Campbell ◽  
R. J. Wright
Keyword(s):  
Soil Moisture ◽  
Soil Temperature ◽  
Rating Scale ◽  
Silt Loam ◽  
Time Of Application ◽  
Field Corn ◽  
Stage Of Development ◽  
Corn Plants ◽  
Over The Top ◽  
Bicycle Wheel

Abstract Insecticides were applied to suppress larval rootworm populations in 2 fields near North Platte, NE. Both fields were composed of Cozad silt loam soils. In Field 1 ‘DeKalb 566’ hybrid field corn was ridge-planted with a John Deere 7100 Max-emerge planter, to a non-tilled seed bed on 19 May. At the time of planting, soil moisture was adequate for germination and the soil temperature at a depth of 5 cm was about 8° C. Several insecticides were applied at planting to plots 2 rows wide, 10 m in length, with a bicycle wheel type applicator. Four replications of each treatment were arranged in a RCB design. T-band applications were made by applying a 7 inch band of insecticide to an open seed furrow. In-furrow applications were made by applying insecticide directly into the seed furrow. After the insecticides were applied, furrows were closed with a rotary hoe and insecticides were incorporated with a rake. Field 2 was ridge-planted to ‘BoJac 577’ field corn with a John Deere 7100 Max-emerge planter, in a non-tilled seed bed on 18 May. At the time of planting, soil moisture was adequate for germination and the soil temperature at a depth of 5 cm was about 13° C. With the exception of 4 field length strips, 12 rows in width, Lorsban 15G was applied at planting with insecticide boxes on the planter at a rate of 1100 g Al/ha. Granular and liquid insecticides were applied to untreated strips in Field 2 immediately prior to cultivation on 22 Jun. The corn plants were in the early whorl stage (V3 stage) of development at the time of application. The plots for the granular treatments in Field 2 were 10 m in length and 4 rows wide. The granular treatments were applied in a 7 inch band, over the whorl of the plants, with a bicycle wheel type applicator. Furadan 4F was applied to 10 X 4 m plots in Field 2, either broadcast over the top of the plants or in 7 inch bands to the base of the plants. All liquid treatments were applied in a total volume of 120 liters/ha at 30 psi. All treatments were replicated 4 times and arranged in a RCB design. Treatments in both fields were evaluated 26 Jul by rating washed roots, using the 1-6 Iowa root damage rating scale, of 4 plants from each replicate.

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 Japanese Beetle Larvae with Insecticide Mixtures, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 334-334
Author(s):  
Philip L. Nixon ◽  
W. Dorner ◽  
Susan T. Ratcliffe ◽  
S. Goodwin
Keyword(s):  
Relative Humidity ◽  
Soil Ph ◽  
Irrigation System ◽  
Kentucky Bluegrass ◽  
Golf Course ◽  
Japanese Beetle ◽  
Single Row ◽  
Time Of Application ◽  
Country Club ◽  
Insecticide Mixtures

Abstract The study was conducted in the short rough alongside a golf course fairway at Urbana Country Club, Urbana, IL. The fairway, short, and long rough consisted of Kentucky bluegrass. A RCB design was used because an outlet for the fairway’s irrigation system was directly opposite block 1, resulting in successively lower levels of irrigation and JB infestation from block 1 through 3. Plots were 5 X 10 ft and were arranged in a single row. Insecticide applications were applied in 3 replications on 16 Sep. Liquid applications were applied with a watering can, and the granular application (Dylox) was shaken from a measuring spoon. Insecticides were watered into the soil within 30 min after all applications were completed with approximately H inch irrigation. At the time of application, it was partly cloudy, 80°F, 50% relative humidity, and with winds < 10 mph. Soil pH was 6.1 with no thatch and was moist at application and 21 DAT. Grub sampling was conducted with a 6-inch diam sod sampler taking five scattered samples in each plot. All the JB grubs were counted in each ⅕ ft2 sample and the numbers were added together in each plot to obtain a ft2 measure. An ANOVA was conducted on the data and means separated by LSD test at P = 0.05.

scholarly journals Timing Study to Evaluate Product Performance of RH-0345 and Imidacloprid to Suppress Green June Beetle Grubs on a Golf Course Fairway in Lancaster County, Pennsylvania, 1996

1998 ◽  
Vol 23 (1) ◽  
pp. 353-354
Author(s):  
P. R. Heller ◽  
R. Walker
Keyword(s):  
Particle Size ◽  
Soil Moisture ◽  
Soil Temperature ◽  
Soil Type ◽  
Clay Soil ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Silt Loam ◽  
Water Ph ◽  
Loam Soil

Abstract The fairway located in Lancaster County, PA, consisted primarily of perennial ryegrass (80%) and creeping bentgrass (50%). Treatment plots were 7 X 6 ft, arranged in a RCB design and replicated 3 times. Liquid formulations were applied by using a CO2 sprayer with 4 8004VS TeeJet nozzles mounted on a 6-ft boom, operating at 28 psi, and delivering 4 gal/1000 ft2. At the 1st treatment time (4 Jun), the following soil and environmental conditions existed: air temperature, 68° F; soil temperature at 1-inch depth, 64° F; soil temperature at 2-inch depth, 62° F; RH, 67%; amount of thatch, 0.125 inch; soil type, silt loam; soil particle size analysis: 30.7% sand, 61.9% silt, 7.4% clay; soil moisture (oven baked), 28.3%; organic matter, 5.6%; water pH, 7.0; soil pH, 6.1; time of treatment, mid-morning; and overcast skies. The experimental area was irrigated with 0.25 inch of water 3 fir after treatment. At the 2nd treatment time (15 Jul), the following soil and environmental conditions existed: air temperature, 78° F; soil temperature at 1-inch depth, 74° F; soil temperature at 2-inch depth, 75° F; RH, 75%; amount of thatch, 0.0625-0.125 inch; soil type; silt loam; soil particle size analysis: 30.7% sand, 61.9% silt, 7.4% clay; soil moisture (oven baked), 37.7%; organic matter, 7.2%; water pH, 7.0; soil pH, 5.9; time of treatment, mid-morning; and cloudy skies. The experimental area was irrigated with 0.25 inch of water immediately after product dried. A the 3rd treatment time (12 Aug), the following soil and environmental conditions existed: air temperature, 65° F; soil temperature at 1-inch depth, 69° F; soil temperature at 2-inch depth, 69° F; RH, 90%; amount of thatch, 0.0625-0.125 inch; soil type, silt loam; soil particle size analysis: 30.7% sand, 61.9% silt, 7.4% clay; soil moisture (oven baked), 40.0%; organic matter, 5.7%; water pH, 7.0; soil pH, 6.5; time of treatment, early morning; and cloudy skies. The experimental area was irrigated with 0.25 inch of water immediately after product dried. Post-treatment counts were made on 29 Aug. The total number of green of June beetle larvae flushed to the surface following an application of Sevin SL over a 24-hr observation interval was recorded from each replicate.

Population dynamics of Paratylenchus nanus in soil under pasture: 1. Aggregation and abiotic factors

Nematology ◽  
2001 ◽  
Vol 3 (2) ◽  
pp. 187-197 ◽  
Author(s):  
Richard Watson ◽  
Nigel Bell
Keyword(s):  
Soil Moisture ◽  
Soil Temperature ◽  
Soil Depth ◽  
Abiotic Factors ◽  
Soil Phosphorus ◽  
Silt Loam ◽  
Plant Abundance ◽  
Grazed Pasture ◽  
Loam Soil ◽  
Accumulated Temperature

AbstractParatylenchus nanus populations were assessed by seasonal and monthly sampling of grazed pasture on silt loam soil in Waikato, New Zealand. The data were used to investigate P.nanus aggregation and relationships with abiotic factors, including soil temperature, rainfall, soil moisture and soil nutrients. P.nanus was more abundant at 10-20 than 0-10 cm soil depth and populations were greatest in summer. Aggregation declined from spring through to winter. P.nanus populations were positively correlated with soil temperature and negatively with soil moisture (seasonally) and rainfall (monthly). Monthly P. nanus abundance was also positively correlated with a combination of accumulated temperature and rainfall. On single occasions, soil phosphorus and nitrogen were significantly negatively correlated with P.nanus populations, and it is suggested that these associations were mediated through host plant abundance.

scholarly journals Efficacy of Four B.T., Japonica BUI BUI, Formulations on Japanese Beetle Grubs, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 371-371
Author(s):  
Stanley R. Swier ◽  
Alan Rollins ◽  
Bryan Carney
Keyword(s):  
Organic Matter ◽  
Soil Ph ◽  
Dry Matter ◽  
Weather Conditions ◽  
Post Treatment ◽  
Soil Conditions ◽  
Silt Loam ◽  
Japanese Beetle ◽  
Time Of Application ◽  
Country Club

Abstract This trial was conducted at Amherst Country Club, Amherst, NH. The lawn was mowed at 1.5 inches and irrigated daily (0.1 inch). All treatments were applied on 19 Aug to 7 X 11 ft plots with 1-ft buffers, replicated 5 times in an RCB design. Liquid formulations were applied with a 2-wheel bicycle-type CO2 boom sprayer equipped with 4 spray heads fitted with a 50-mesh strainer and an 8004 fan-type nozzle. The volume of water and insecticide mix per plot was 2 gal/1000 ft2 delivered at 40 psi. Granular formulations were evenly dispersed using large plastic salt shakers. The surface of the turf was free of moisture (dew) at time of application. The plots were irrigated post-treatment with 0.4 in of water. Grubs were primarily 2nd instar. Weather conditions at time of application were as follows. Air, temp; 78°F; sky, clear; wind, moderate breeze. Soil conditions were as follows: surface temp, 80°F; at 1-inch depth, 76°F; at 2-inch depth, 75°F; soil pH, 5.6; texture, silt loam; sand, 50%; silt, 43%; clay, 7%; dry matter, 81%; moisture, 19%; organic matter, 5%. The trial was rated on 20 Sep using a Ryan 18-inch sod cutter to cut the plots to a depth of 3/4 inch. A 3 ft2 piece of sod was moved and live grubs counted.

scholarly journals Control of Western Corn Rootworm Larvae, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 205-205
Author(s):  
R. C. Seymour ◽  
J. B. Campbell ◽  
R. J. Wright
Keyword(s):  
Soil Moisture ◽  
Soil Temperature ◽  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Silt Loam ◽  
Hybrid Corn ◽  
Significant Difference ◽  
Bicycle Wheel ◽  
State Scale

Abstract Insecticides were evaluated for rootworm larval suppression in a field composed of Cozad silt loam soils. ‘DeKalb 580’ hybrid corn was ridge planted near North Platte, NE, on 1 May. At the time of planting, soil moisture was adequate for germination. Soil temperature at a depth of 5 cm was about 7°C. Treatments were applied at planting to 5 X 40 ft plots in a RCB design with four replicates. Insecticides were applied with either a planter-mounted “Smart Box” applicator or a bicycle wheel applicator-mounted noble box. On 15 Jul four plants from each plot were collected and the roots were washed. The roots were then rated for rootworm damage using the 1-6 Iowa State scale. Treatment means were analyzed with ANOVA and were separated with Fisher’s protected test of least significant difference.

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 Midsummer Management of Japanese Beetle Grubs with Merit 75WSP on a Golf Course Fairway in Lewistown, Pa, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 281-281
Author(s):  
P. R. Heller ◽  
R. Walker
Keyword(s):  
Soil Temperature ◽  
Treatment Time ◽  
Kentucky Bluegrass ◽  
Particle Size Analysis ◽  
Golf Course ◽  
Size Analysis ◽  
Japanese Beetle ◽  
Annual Bluegrass ◽  
Water Ph ◽  
Loam Soil

Abstract The fairway consisted primarily of annual bluegrass (40%), Kentucky bluegrass (40%), and perennial ryegrass (20%). Treatment plots were 9 × 6 ft, arranged in a RCB design, replicated 3 times. Liquid formulations were applied with a CO2 compressed air sprayer with 4 8004VS TeeJet nozzles mounted on a 6 ft boom, operating at 28 psi, and delivering 5 gal/1000 ft2. At treatment time (26 Jul) the following soil and environmental conditions existed: air temperature, 72°F; soil temperature at 1 inch depth, 76CF; soil temperature at 2 inch, 74°F; RH, 85%; amount of thatch, 0.25-0.50 inches; soil type, loam; soil particle size analysis: 31.1% sand, 46.4% silt, 22.5% clay; organic matter, 6.7%; soil moisture (oven baked) 23.1%; water pH, 6-7; soil pH, 4.4; and partly cloudy skies. Immediately after treatment the experimental area was irrigated with 0.25 inches of water. Posttreatment counts were made 42 DAT (6 Sep). Three ft2 sod samples were randomly taken from each replicate, and the total number of Japanese beetle grubs ft2 was recorded.

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