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 Influence of Post-Application Irrigation on Control of Annual White Grubs on a Golf Course Fair-Way, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 355-355
Author(s):  
F.P. Baxendale ◽  
A.P. Weinhold ◽  
K.A. Weinhold
Keyword(s):  
Kentucky Bluegrass ◽  
Golf Course ◽  
Silty Clay ◽  
Clay Loam Soil ◽  
Silty Clay Loam ◽  
White Grubs ◽  
Time Of Application ◽  
Water Ph ◽  
Plot Area ◽  
Loam Soil

Abstract This study was conducted in Lincoln, NE on a golf course fairway. The turf (20% Kentucky bluegrass and 80% perennial rye) was maintained at a mowing height of 11/16 inch. Thatch accumulation (finger compressed) in the plot area was 0.375 to 0.50 inch. Field conditions at the study site were: soil type, silty clay loam; soil organic matter, 4%; soil pH, 6.2; water pH, 7.0. Environmental conditions at the time of application were as follows: soil moisture 12% by wt.; air temperature 72°F; soil temperature 72°F; relative humidity 43%; wind direction and velocity 6° at 7 mph. Plots were 6 X 10 ft and the experimental design was a RCB with 3 replications. Insecticides were applied once on 9 Jul and twice on 11 Jul. Liquids were applied using a CO2 sprayer with a TeeJet® 8002 nozzle at 30 psi and delivering 2 gal/1000 square feet. A pre-calibrated Gandy 24H12 drop spreader was used to apply granular insecticides. Post-application irrigations were applied as follows: 09 Jul application, none; 11 Jul, first application, 0.35 inch; 11 Jul, second application with syringe, approximately 0.125 inch. Normal irrigation was resumed after 48 h. Precipitation between application and evaluation totaled 11.3 inches. Treatments were evaluated 57 DAT on 4 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. Insecticides were applied prior to the onset of masked chafer oviposition.

scholarly journals Influence of Application Timing of Insecticides on Control of Southern Masked Chafer, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 333-334
Author(s):  
T. M. Heng-Moss ◽  
A. P. Weinhold ◽  
F. P. Baxendale
Keyword(s):  
Kentucky Bluegrass ◽  
Silty Clay ◽  
Soil Cores ◽  
Clay Loam Soil ◽  
Silty Clay Loam ◽  
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 inch. Field conditions at the study site were; soil type, silty clay loam; soil organic matter, 3.5%; soil pH, 6.5; water pH, 7.0. Environmental conditions at the time of application, (17 Jun, and 12 Aug) were as follows: soil moisture 20%, and 22% by wt respectively; air temperature 84° F, and 64° F; soil temperature 65° F, and 66° F; relative humidity 32%, and 88%; wind direction and velocity 245° at 3 mph., and 345° at 7 mph. Plots were 6 X 10 ft and the experimental design was a RCB with 4 replications. Liquid insecticides were applied using a CO2 sprayer with a TeeJet® 8002 nozzle at 30 psi and delivering 87 gpa. Following applications, plots were irrigated with 0.25 inches of water. Post-treatment precipitation totaled 8.34 inches. Treatments were evaluated 80 days after the first application on 05 Sep by removing from each plot six, 8-inch diam turf-soil cores (2.10 ft2 total area) to a depth of 3 inches and counting the number of surviving grubs.

scholarly journals Annual White Grub Control on a Golf Course Fairway Using Subsurface and Conventional Application Methods, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 287-287
Author(s):  
F. P. Baxendale ◽  
A. P. Weinhold ◽  
K. Von Bargen ◽  
R. D. Grisso
Keyword(s):  
Kentucky Bluegrass ◽  
Golf Course ◽  
Silty Clay ◽  
Soil Cores ◽  
White Grub ◽  
Clay Loam Soil ◽  
Silty Clay Loam ◽  
Water Ph ◽  
Plot Area ◽  
Loam Soil

Abstract This study was conducted in Lincoln, NE on a golf course fairway. The turf (100% Kentucky bluegrass) was maintained at a mowing height of 5/s inches. Thatch accumulation (finger compressed) in the plot area was 0.5 to 0.75 inches. Field conditions at the study site were: soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6.7; water pH, 7.0. Soil moisture was maintained at approximately 17% by weight, throughout the study. Plots were 40 inches × 15 ft and the experimental design was a RCB with 3 replications. Insecticide treatments were applied on 23 Aug 1994 using either a Cushman prototype subsurface applicator designed to place insecticide granular treatments at the soil-thatch interface (avg depth 0.75 inches), or a Gandy 24H12 drop spreader. Following applications, plots were irrigated with 0.5 inches of water. Posttreatment precipitation totaled 0.42 inches. Treatments were evaluated 21 DAT on 13 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. Pretreatment counts indicated 10-40 SMC/ft2 with 80-90% in the third instar stage in the test area.

scholarly journals Preventive Control of Annual White Grubs on a Golf Course Fairway, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 337-337
Author(s):  
F. P. Baxendale ◽  
J. A. Kalisch ◽  
R. E. Gaussoin
Keyword(s):  
Near Field ◽  
Field Capacity ◽  
Golf Course ◽  
Silty Clay ◽  
White Grubs ◽  
Preventive Control ◽  
Time Of Application ◽  
Water Ph ◽  
Plot Area ◽  
Loam Soil

Abstract The study was conducted in Lincoln, NE on a perennial rye golf course fairway. The turf (100% perennial rye) was maintained at a mowing height of 5/s inches and thatch accumulation in the plot area was 0.5 inches finger compressed, 0.25 inches). Field conditions at the time of application were: soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6-7; water pH, 7.0; soil moisture, near field capacity. Plots were 8 × 8 ft, and the experimental design was a RCB with 5 replications. Insecticide treatments were applied 19 Apr. Liquid insecticides were applied using a CO2 sprayer with an LF-4 tip at 24 psi and delivering 5 gal finished spray/1000 ft2. The granular formulation of Merit was applied with a pre-calibrated Gandy 24H12 spreader. Immediately following applications, the test area was irrigated with approximately 0.5 inches of water. A total of 20.68 inches of rain fell during the post-treatment period. Product efficacy was evaluated 3 Sep (137 days after treatment) by removing from each plot six, 8-inch diameter turf-soil cores (2.1 ft2 total area) to a depth of 3 inches and counting the number of surviving grubs.

scholarly journals Influence of Hm-8902 Combined with Fn-5354 Or Naf-53 for Control of Annual White Grubs, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 319-319
Author(s):  
F. P. Baxendale ◽  
A. P. Weinhold ◽  
R. E. Gaussoin
Keyword(s):  
Near Field ◽  
Field Capacity ◽  
Kentucky Bluegrass ◽  
Silty Clay ◽  
Clay Loam Soil ◽  
White Grubs ◽  
Time Of Application ◽  
Water Ph ◽  
Plot Area ◽  
Loam Soil

Abstract The study was conducted in Lincoln, NE on a Kentucky bluegrass and perennial rye golf course fairway. The turf (50% Kentucky bluegrass and 50% perennial rye) was maintained at a mowing height of % inches and thatch accumulation in the plot area was 0.75 inches (finger compressed, 0.5 inches). Field conditions at the time of application were: soil type, silty clay loam; soil organic matter, 3—5%; soil pH, 6—7; water pH, 7.0; soil moisture, near field capacity. Plots were 6 × 6 ft and the experimental design was a RCB with 4 replications. Insecticide treatments were applied 24 Aug using a CO2 sprayer with an LF-4 tip at 24 psi and delivering 5 gal finished spray/1000 ft2. Immediately following applications, the test area was irrigated with approximately 0.5 inches of water. A total of 4.61 inches of rain fell during the post-treatment period. Product efficacy was evaluated 14 Sep (21 DAT) 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 Japanese Beetle Larvae on Golf Course Fairway, WV, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 353-353
Author(s):  
Joseph E. Weaver
Keyword(s):  
Organic Matter ◽  
Statistical Analysis ◽  
Golf Course ◽  
Particle Analysis ◽  
Japanese Beetle ◽  
Water Ph ◽  
Soil Temperatures ◽  
Plot Area ◽  
Loam Soil ◽  
System Water

Abstract Treatments were applied 27 Jul to plots 8 X 8 ft arranged in a RCBD, replicated 4 times. Granular materials were applied with a shaker jar. Liquid treatments were applied in 1 liter of water per plot with a sprinkling can. The plot area was irrigated after the last treatment had been applied with about ¼inch water using the golf course system. Water pH to apply was 6.85; to irrigate, about 8.0. Environmental conditions at start (8:30 am) and finish (9:35 am) of treatment applications were, respectively: air temperature, 23° C and 31.5° C; RH, 84% and 60%; overcast (fog) and clear (calm); soil temperatures (surface) 26° C and 32° C, (1 inch) 25.5° C and 29.5° C; soil moist from regular irrigation; soil type, loam; soil particle analysis, 40.7% sand, 46.6% silt, 12.7% clay; organic matter, 11.7%, pH 5.35; CEC, 23.81 meg/100 g; 1/3 bar, 31.29%. Thatch thickness ranged from 0.24 to 0.38 inches for 28 samples over plot area. Grub population was 100% Japanese beetle (pre- and post-treatment); avg no. grubs at treatment was 34.5/ft2 (59.4% mid to late 1st instar, 40.6% early 2nd instar). Efficacy was evaluated at 53 DAT using a cup changer to extract 4 plugs near the center of each plot to a depth of 2-3 inches and counting live larvae in each sample. The no. larvae for the 4 plugs from each plot was averaged to produce a mean for each replicate for statistical analysis.

scholarly journals Control of Buffalograss Chinch Bugs with Combinations of Insecticidal Soap and Reduced Rates of Conventional Insecticides, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 328-328
Author(s):  
F. P. Baxendale ◽  
J. A. Kalisch ◽  
D. H. Steinegger
Keyword(s):  
Near Field ◽  
Field Capacity ◽  
Silty Clay ◽  
Soil Cores ◽  
Clay Loam Soil ◽  
Silty Clay Loam ◽  
Time Of Application ◽  
Water Ph ◽  
Plot Area ◽  
Loam Soil

Abstract The study was conducted on a buffalograss lawn in Lincoln, NE. The turf was maintained at a mowing height of 3.5 inches and thatch accumulation in the plot area was 0.25 inches. Field conditions at the time of application were: soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6-7; water pH, 7.0; soil moisture, near field capacity. Plots were 4 × 4 ft and the experimental design was a RCB with 4 replications. Insecticide treatments were applied 3 Sep. Prior to application, the plot area was mowed to 1.5 inches. Treatments were applied with a CO2 sprayer using a LF-4 tip at 24 psi and delivering 5 gal finished spray/1000 ft2. Immediately following application, plots were syringed with 0.25 inches water. Product efficacy was evaluated 8 Sep (5 DAT) by removing from each plot three turf-soil cores to a depth of 1 inch with a 4.25-inch diam cup cutter (0.3 ft2 total area per plot). Cores were returned to the laboratory and placed in Berlese funnels. After 48 hr extracted chinch bugs were 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 Preventive Management of White Grubs with 1.5-G Formulations of Halofenozide and Mach-2 Liquid Insecticide, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 332-332
Author(s):  
P. R. Heller ◽  
R. Walker
Keyword(s):  
Soil Temperature ◽  
Treatment Time ◽  
Kentucky Bluegrass ◽  
Product Distribution ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Japanese Beetle ◽  
White Grubs ◽  
Water Ph ◽  
Loam Soil

Abstract The turfgrass area, located in Carbon County, PA, consisted primarily of Kentucky bluegrass (40%), annual bluegrass (40%), and perennial ryegrass (20%). Treatment plots were 8 X 6 ft, arranged in a RCB design and replicated 3 times. Liquid formulations were applied by using z CO2 sprayer with 4 8002VS TeeJet nozzles mounted on a 6-ft boom, operating at 28 psi, and applied in 500 ml of water/48 ft2 or delivering 2.7 gal/lOOC ft2. Granular formulations were applied with a hand-held shaker and mixed with fine top-dressing sand to facilitate product distribution. At treatment time (19 Aug), the following soil and environmental conditions existed: air temperature, 70° F; soil temperature at 1-inch depth, 69° F; soil temperature at 2 inch, 69° F; RH, 68%; amount of thatch, 0.5-0.625 inch; soil textural class, silt loam to loam; soil particle size analysis; sand, 39.4%; silt, 50.5%; clay 10.1%; organic matter, 20.9%; soil percent water content (percent by weight), 36.3; water pH, 7.0; soil pH, 6.8; application time, mid-morning; and skies cloudy. Immediately after treatment select treatments were irrigated in with 0.2 inch of water. Post-treatment counts were made on 7 Oct. Three ft2 soc samples were randomly taken from each replicate, and the total number of Japanese beetle grubs/ft2 was recorded.

scholarly journals Control of Buffalograss Chinch Bugs with Beauvarja Bassiana and Entomopathogenic Nematodes, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 328-328
Author(s):  
F. P. Baxendale ◽  
A. P. Weinhold ◽  
T. P. Riordan
Keyword(s):  
Entomopathogenic Nematodes ◽  
Near Field ◽  
Field Capacity ◽  
Silty Clay ◽  
Clay Loam Soil ◽  
Silty Clay Loam ◽  
Time Of Application ◽  
Water Ph ◽  
Plot Area ◽  
Loam Soil

Abstract The study was conducted on a buffalograss lawn in Lincoln, NE. The turf was maintained at a mowing height of 3.5 inches and thatch accumulation in the plot area was 0.25 inches. Field conditions at the time of application were: soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6-7; water pH, 7.0; soil moisture, near field capacity. Plots were 4 × 4 ft and the experimental design was a RCB with 3 replications’. Insecticide treatments were applied 2 Sep. Prior to application, the plot area was mowed to 1.5 inches. Treatments were applied with a CO2 sprayer using a LF-4 tip at 24 psi and delivering 5 gal finished spray/1000 ft2. Immediately following application, plots were syringed with 0.25 inches water. A total of 0.29 and 0.68 inches of rain fell respectively, during the 7 and 14 day post-treatment periods. Product efficacy was evaluated 9 and 16 Sep (7 and 14 DAT) by removing from each plot three turf-soil cores to a depth of 1 inch with a 4.25-inch diam cup cutter (0.3 ft2 total area per plot). Cores were returned to the laboratory and placed in Berlese funnels. Extracted chinch bugs were counted after 48 hr.

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