scholarly journals Efficacy of Four Formulations of Halofenozide (A Growth Regulator) Against European Chafer Larvae on a Home Lawn, 1996

1998 ◽  
Vol 23 (1) ◽  
pp. 355-356
Author(s):  
P. J. Vittum ◽  
M. Tiskus
Keyword(s):  
Soil Ph ◽  
Growth Regulator ◽  
Kentucky Bluegrass ◽  
Taraxacum Officinale ◽  
Soil Conditions ◽  
Digitaria Sanguinalis ◽  
Time Of Application ◽  
Overhead Irrigation ◽  
Silty Loam ◽  
Loam Soil

Abstract Four formulations of halofenozide (RH-0345) were tested for efficacy against European chafer larvae on a home iawn at the Suburban Experiment Station, Waltham, MA. The lawn consisted of 30% crabgrass (Digitaria sanguinalis), 30% perennial ryegrass, 20% Kentucky bluegrass, 20% dandelion (Taraxacum officinale L.), and was mowed at ca. 1.5 inches. Treatment plots were 8 ft by 8 ft, replicated 5 times, arranged in a CRB. All applications were made on 24 Jul. Granular products were applied using glass jars with perforated lids. Liquid formulations were applied ay hand with a watering can using 3 liters of water per plot. Soil conditions at the study site at time of application were as follows: soil type, silty loam; soil pH 6.2. All plots were watered in with 0.25 inch of irrigation through overhead irrigation within 15 minutes of application. Product efficacy was evaluated on 19 Sept (57 DAT) by removing 5 cup-cutter plugs (4.25-inch diam) from near the center of each plot, dislodging soil and counting all grubs to a Jepth of 3 inches.

scholarly journals Efficacy of Several Turf Insecticides Against European Chafer Larvae, Home Lawn, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 366-366
Author(s):  
P. J. Vittum
Keyword(s):  
Soil Ph ◽  
Perennial Ryegrass ◽  
Soil Type ◽  
Annual Bluegrass ◽  
Time Of Application ◽  
First Instar ◽  
Overhead Irrigation ◽  
Water Ph ◽  
Silty Loam ◽  
Loam Soil

Abstract Six turf insec-ticides were tested for efficacy against European chafer larvae on a home lawn in Waltham, Mass. Grub populations were ca. 60% eggs, 40% early first instar at the time of application. The lawn consisted of 30% perennial ryegrass, 30% annual bluegrass, 30% crabgrass, and 10% dandelion, and was mowed at ca. 1.5 inches. Treatment plots were 8 ft by 8 ft, replicated 5 times, arranged in a RCB. All applications were made between 11:00 AM and 12:30 PM on 1 Aug 95. Liquid formulations were applied by hand with a watering can, 3 liters per plot. Granular formulations were applied using glass jars with perforated lids. Conditions at the time of application were as follows: air temp. 85° F, sunny and moderately humid with light SW wind (5-10 mph); soil type, silty loam; soil pH 6.6; water pH, 8.2. All plots were hand watered with 0.1 inch immediately after application, and an additional 0.2 inch was applied through overhead irrigation within 2 hr after application. No measurable rain fell in the area for 2 wk after application. Product efficacy was evaluated on 17 Oct (77 DAT) by removing 5 cupcutter plugs (4.25 inch diam) from near the center of each plot, dislodging soil with a hand trowel, and counting all grubs to a depth of 3 inches.

Comparison of Two Nematode Formulations for Black Turfgrass Ataenius Control, 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 ◽  
Sandy Loam ◽  
Weather Conditions ◽  
Soil Conditions ◽  
Time Of Application ◽  
Country Club

Abstract This trial was conducted at Wentworth-By-The-Sea Country Club, New Castle, NH. All treatments were applied to a fairway on 15 Jul on 7 X 7 ft plots, 5 replicates per treatment, using an RCB design with 1 -ft buffers between plots. Treatments 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. The entire trial was irrigated with 1/2 inch of water immediately after application. Weather conditions at time of application were as follows: air temp, 72°F; sky, cloudy; wind, strong breeze. Soil conditions were as follows: surface temp, 70°F; at 1-inch depth, 71°F; at 2-inch depth, 71°F; texture, sandy loam; sand, 67%; silt, 27%; clay, 6%, soil pH, 6.0; dry matter, 74%; moisture, 26%; organic matter, 12%; thatch depth, 1/4 inch. The trial was rated on 5 Aug. A Ryan 12” sod cutter was used to cut a strip to a depth of 3/4 inch. A 1 ft2 piece of sod was pealed back, and live grubs were counted.

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 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 Comparison of Three Rates of a Growth Regulator on Black Cutworm, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 353-353
Author(s):  
Stanley R. Swier ◽  
Alan Rollins ◽  
Bryan Carney
Keyword(s):  
Organic Matter ◽  
Soil Ph ◽  
Growth Regulator ◽  
Soil Texture ◽  
Dry Matter ◽  
Weather Conditions ◽  
Soil Conditions ◽  
Black Cutworm ◽  
Country Club

Abstract Two trials were conducted at Amherst Country Club, Amherst, NH. In the first trial treatments were applied on 6 Sep to a bentgrass nursery and rated 13 Sep. In the second, treatments were applied 12 Sep and rate 19 Sep. The treatments were applied in an RCB design, 4 replicates per treatment, with 1 -ft buffers between plots. All treatments were applied with a 2-wheel bicycle-type CO2 boom sprayer, using four 8004 nozzles with 50-mesh screens. The volume of water and insecticide mix per plot was 2 gal/1000ft2 delivered at 40 psi. BCW larvae were predominantly 3rd-4th instar in the 1st trial and 1 st-2nd instar in the 2nd trial. Weather conditions were as follows: on 6 Sep, air temp, 81°F; sky, clear; wind, calm. Soil conditions were as follows: surface temp, 83°F; temp at 1-inch depth, 74°F; soil pH, 5.7; dry matter, 80%; moisture, 20%; organic matter, 4%; soil texture, loam; sand, 60%; silt, 20%; clay, 20%. On 12 Sep, air temp was 74°F; soil temp at surface was 71°F; at 1-inch depth, 69°F. The trials were rated for live larvae by soaking each plot with Joy dish soap and water to force larvae to the surface.

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 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 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.

NH3 volatilization, soil concentration and soil pH following subsurface banding of urea at increasing rates

2013 ◽  
Vol 93 (2) ◽  
pp. 261-268 ◽  
Author(s):  
Philippe Rochette ◽  
Denis A. Angers ◽  
Martin H. Chantigny ◽  
Marc-Olivier Gasser ◽  
J. Douglas MacDonald ◽  
...  
Keyword(s):  
Soil Ph ◽  
Nonlinear Response ◽  
Ammonia Volatilization ◽  
Soil Surface ◽  
Application Rate ◽  
Wind Tunnels ◽  
Application Rates ◽  
Silty Loam ◽  
Loam Soil ◽  
Main Factor

Rochette, P., Angers, D. A., Chantigny, M. H., Gasser, M.-O., MacDonald, J. D., Pelster, D. E. and Bertrand, N. 2013. NH 3 volatilization, soil [Formula: see text] concentration and soil pH following subsurface banding of urea at increasing rates. Can. J. Soil Sci. 93: 261–268. Subsurface banding of urea can result in large ammonia (NH3) emissions following a local increase in soil ammonium ([Formula: see text]) concentration and pH. We conducted a field experiment to determine how application rates of subsurface banded urea impact NH3 volatilization. Urea was banded at a 5 cm depth to a silty loam soil (pH=5.5) at rates of 0, 6.1, 9.2, 13.3 and 15.3 g N m−1. Ammonia volatilization (wind tunnels), and soil [Formula: see text] concentration and pH (0–10 cm) were monitored for 25 d following urea application. Volatilization losses increased exponentially with urea application rate to 11.6% of applied N for the highest urea rate, indicating that as more urea N was added to the soil a larger fraction was lost as NH3. Cumulative NH3-N emissions were closely related (R 2≥0.85) to maximum increases in soil [Formula: see text] concentration and pH, and their combined influence likely contributed to the nonlinearity of the volatilization response to urea application rate. However, the rapid increase in NH3 losses when soil pH rose above 7 suggests that soil pH was the main factor explaining the nonlinear response of NH3 volatilization. When compared with previous studies, our results suggest that the response of NH3 volatilization losses to urea application rate in acidic soils are controlled by similar factors whether urea is broadcasted at the soil surface or subsurface banded.

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.

Sign in / Sign up

Export Citation Format

Share Document