scholarly journals Control of Billbug Larvae and a Subsequent White Grub Population on a Lawn Area in Wayne County, Ohio, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 324-324
Author(s):  
K. T. Power ◽  
D. J. Shetlar ◽  
H. D. Niemczyk ◽  
M. G. Belcher
Keyword(s):  
Perennial Ryegrass ◽  
Environmental Conditions ◽  
Kentucky Bluegrass ◽  
White Grub ◽  
Technical Institute ◽  
Efficacy Data ◽  
Larval Population ◽  
Wayne County ◽  
Experimental Area ◽  
Water Ph

Abstract The study was located lawns of the Agricultural Technical Institute at Wooster, Ohio. Insecticides were applied 15 Jun to plots 10 x 10 ft arranged in a randomized complete block, replicated 4 times. Granular insecticides were applied using a drop spreader and liquids using a CO2 sprayer with Teejet 8010LP nozzles at 30 psi that delivered a volume of 3 gal/1000 ft2. The experimental area received no posttreatment irrigation. Environmental conditions at time of treatment were as follows. Billbugs: early instars present, no pretreatment count. Turf: 3° slope, dry, 3 in height, 50% Kentucky bluegrass, 50% perennial ryegrass. Thatch: moist, Vi inch, dense. Soil: moist, 68°F at 1 inch and 55°F at 3 inches. Weather: sunny, 73°F, 5-8 mph. Water: pH 4.9. Billbug efficacy data taken from each plot 9 Jul (28 DAT) were based on the number of live billbug larvae and pupae in 6, AVi inches in diam samples from each plot. Efficacy data for control of a subsequent JB and NMC larval population (appx 70% JB: 30% NMC) taken 5 & 7 Oct was based on the number of live grubs in 6, 7 × 7 in samples from each plot.

scholarly journals Control of the Black Turfgrass Ataenius on a Golf Course Fairway in Ashland County, Oh, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 323-323
Author(s):  
K. T. Power ◽  
D. J. Shetlar ◽  
H. D. Niemczyk ◽  
M. G. Belcher
Keyword(s):  
Perennial Ryegrass ◽  
Environmental Conditions ◽  
Kentucky Bluegrass ◽  
Golf Course ◽  
Efficacy Data ◽  
Annual Bluegrass ◽  
Experimental Area ◽  
Water Ph

Abstract The study was located on a golf course fairway at Jeromesville. Insecticides were applied 16 Jun to plots 8 × 10 ft arranged in a RCB, replicated 4 times. Granular insecticides were applied using a drop spreader and liquids using a CO2 sprayer with Teejet XR8006VS nozzles at 35 psi pressure that delivered a volume of 1 gal/1000 ft2. The experimental area was irrigated approximately V* inch after all treatments were applied but before sprays had dried on the grass blades. Environmental conditions at time of treatment were as follows. BTA: eggs and 1st instars present, no pretreatment count. Turf: level, light dew, IVs inch height, 40% perennial ryegrass, 30% Kentucky bluegrass, 30% annual bluegrass. Thatch: dense, moist, % inch. Soil: moist, 66°F at 1 inch and 67°F at 3 inch. Weather: sunny, 65°F, 0-5 mph. Water: pH 6.5. Efficacy data taken 6 Jul (20 DAT) were based on the number of live BTA larvae and pupae in 6, 4Vt inch in diam samples from each plot. No phytotoxicity was observed.

scholarly journals Control of the Black Turfgrass Ataenius Larvae on a Golf Course Fairway 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 273-274
Author(s):  
K. T. Power ◽  
D. J. Shetlar ◽  
H. D. Niemczyk ◽  
M. G. Belcher
Keyword(s):  
Granular Materials ◽  
Environmental Conditions ◽  
Golf Course ◽  
Efficacy Data ◽  
Annual Bluegrass ◽  
Experimental Area ◽  
Water Ph

Abstract The study was located on golf course fairway at Seville. Insecticides were applied 23 Jul to plots 10 × 10 ft (3.1 × 3.1 m) arranged in a RCB, replicated 4 times. Granular materials were applied using a drop spreader and shaker jar. Liquid treatments were applied with a CO2 sprayer with Teejet XR8008VS nozzles at 35 psi (2.46 kg/cm2) pressure that delivered a volume of 1 gal/1000 ft2 (407 liter/ha) and pythrethriods with a CO2 sprayer with Teejet 8010 nozzles at 35 psi (2.46 kg/cm2) pressure that delivered a volume of 2 gal/1000 ft2 (814 liter/ha). The experimental area was irrigated approximately V* inch (6 mm) of water using the golf course system. Environmental conditions at time of treatment were as follows. BTA: eggs, 1st and 2nd instars present, 60 larvae/ ft2. Turf: level, dry, 5A inch (16 mm) height, 70% bentgrass and 30% annual bluegrass. Thatch: dense, moist, % inch (2 cm). Soil, moist, 74°F at 1 inch (2.5 cm) and 72°F at 3 inch (7.6 cm). Weather: sunny, 81°F, 0 mph. Water: pH 4.6. Efficacy data taken 7 Jul (14 DAT) were based on the number of live larvae in six samples 4% inch (10.8 cm) in diam from each plot.

Control of Japanese Beetle Larvae on a Golf Course Fairway in Medina County, Ohio, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 301-302
Author(s):  
K. T. Power ◽  
D. J. Shetlar ◽  
H. D. Niemczyk ◽  
M. G. Belcher
Keyword(s):  
Environmental Conditions ◽  
Golf Course ◽  
Japanese Beetle ◽  
Efficacy Data ◽  
Light Rain ◽  
Annual Bluegrass ◽  
Experimental Area ◽  
Water Ph

Abstract The study was located on a golf course fairway at Seville, Ohio. Insecticides were applied 1 Sep to plots 8 × 10 ft (2.4 × 3.1 m) arranged in a randomized complete block, replicated 4 times. Liquids were applied using a CO2 sprayer with Teejet XR8006VS nozzles at 35 psi (2.46 kg/cm2) pressure that delivered a volume of 1 gal/1000 ft2 (407 liter/ha). The experimental area was irrigated approximately V> in (6 mm) after all treatments were applied but before sprays had dried on the grass blades. Environmental conditions at time of treatment were as follows. JB: ca. 215/m2, 60% 2nd and 40% 3rd instars. Turf: slight slope <5° dew, 1 in (2.5 cm) height, 65% Bentgrass, 30% annual bluegrass, 5% other grasses. Thatch: dense, moist, 5/s in (1.6 cm) Soil: moist, 73°F at 1 in (2.5 cm) and 72°F at 3 in (7.6 cm). Weather: cloudy and light rain, 74°F, 0 mph. Water: pH 5.1. Efficacy data taken 5 Oct (35 DAT) were based on the number of live JB larvae in six 7 × 7 in (17.8 × 17.8 cm) square samples from each plot.

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 Efficacy of Chemical and Biological Insecticides for Control of Overwintered Japanese Beetle and Northern Masked Chafer Larvae on a Golf Course Rough in Summit County, Ohio, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 323-323
Author(s):  
K. T. Power ◽  
D. J. Shetlar ◽  
H. D. Niemczyk ◽  
M. Belcher
Keyword(s):  
Analysis Of Variance ◽  
Environmental Conditions ◽  
Kentucky Bluegrass ◽  
Golf Course ◽  
Japanese Beetle ◽  
Efficacy Data ◽  
White Grubs ◽  
Annual Bluegrass ◽  
Plot Analysis

Abstract The study was located on a golf course rough at Valley View Golf Course in Akron, Ohio. Insecticides were applied 3 May to plots 5 X 10 ft (1.5 X 3.1 m) arranged in a RCB, replicated 3 times. Liquid treatments were applied with a CO2 sprayer and TeeJet™ XR8010VS nozzles at 30 psi (2.19 kg/cm2) pressure that delivered a volume of 3.1 gal/1000 ft2 (1262 liter/ha). The granular treatment was applied with a drop spreader. After all treatments were applied, the area was irrigated with approximately ½inch (13 mm) of water using the golf course system. Environmental conditions at the time of treatment were as follows: White grubs: approximately 15/ft2, 60% NMC 3rd instars, 40% JB 3rd instars; Turf: level, dry, 1.0-2.0 inch (2.5-5.0 cm) ht, 50% bentgrass, 30% annual bluegrass, and 20% Kentucky Bluegrass, no thatch; Soil: moist, 50°F at 1 inch (2.5 cm) and 3 inch (7.6 cm); Weather: sunny, 47°F, no wind. Efficacy data taken 30 May (28 DAT) were based on the number of live larvae in four samples 7X7 inch (17.8 X 17.8 cm) from each plot. Analysis of variance was done on plot totals transformed to log (X+l) and means separated by LSD test at P = 0.05.

Model of disharmonic succession of dystrophic lakes based on aquatic beetle fauna (Coleoptera)

2019 ◽  
Vol 70 (2) ◽  
pp. 195 ◽  
Author(s):  
J. Pakulnicka ◽  
A. Zawal
Keyword(s):  
Environmental Conditions ◽  
Physical Parameters ◽  
Humic Lakes ◽  
Ecological Value ◽  
Water Ph ◽  
Rare And Endangered ◽  
Successional Stages ◽  
The One ◽  
Aquatic Beetle

Directional changes in environmental conditions during individual stages of the succession of lakes should determine the character of the aquatic beetle fauna inhabiting them. Can changes in environmental conditions lead to degradation of fauna and to a deterioration of the ecological quality of lakes? We analysed this problem in 40 lakes. The fauna of the lakes proved to be rich and diverse in terms of species. Deterioration of species richness along successional stages was not observed, but distinct changes were noted in faunal composition. The eurytopic component proved stable, whereas changes in specialised components (i.e. lake and river species and tyrphophiles) were of key importance. The formation of beetle communities in the lakes was influenced to a greater extent by environmental factors, namely substrate, macrophyte structure and Sphagnum mat cover, than by the physical parameters of the water (pH, saturation or conductivity). The lakes proved to be of considerable ecological value. Regardless of the stage of succession, they are a habitat for numerous species, including rare and endangered ones. Hence, on the one hand humic lakes play an important role in local biodiversity, whereas on the other hand they may be perceived as refuges for species in environments that could be restored as a result of beneficial measures.

scholarly journals Optimizing Pre-germination Techniques for Kentucky Bluegrass and Perennial Ryegrass1

2019 ◽  
Vol 37 (1) ◽  
pp. 19-23
Author(s):  
Julie H. Campbell ◽  
Jason J. Henderson ◽  
John C. Inguagiato ◽  
Victoria H. Wallace ◽  
Anthony Minniti
Keyword(s):  
Water Temperature ◽  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Untreated Control ◽  
Poa Pratensis ◽  
Kentucky Bluegrass ◽  
Germination Percentage ◽  
Lolium Perenne L ◽  
Seed Soaking ◽  
Significant Difference

Abstract Many intensively trafficked areas such as athletic fields and golf courses require constant overseeding to maintain suitable turfgrass cover. Rapid seed germination and development are critical to managing these high wear areas. The objectives of this research were to determine the effect of water aeration, seed soaking duration, and water temperature on mean germination time (MGT) and final germination percentage (FGP) of Kentucky bluegrass (Poa pratensis L., KBG) and perennial ryegrass (Lolium perenne L., PRG). Two separate controlled environment studies were conducted. PRG soaked in aerated water from 8 to 48 h had a 20% decrease in MGT compared to an untreated control, while treated KBG decreased MGT by only 10% compared to an untreated control. Soaking duration and water temperature had significant effects on KBG. KBG MGT was optimized at 20 C (68 F) water temperature with a soaking duration of 24 h. MGT of PRG was optimized when soaked for 8 h while water was aerated. There was no significant difference in FGP for any of the treatments tested. Index words: turfgrass, aeration, seed soaking. Species used in this study: Kentucky bluegrass (Poa pratensis L.); perennial ryegrass (Lolium perenne L.).

scholarly journals Additional Host Plants of Four Species of Billbug Found on New Jersey Turfgrasses

1990 ◽  
Vol 115 (4) ◽  
pp. 608-611 ◽  
Author(s):  
Jennifer M. Johnson-Cicalese ◽  
C.R. Funk
Keyword(s):  
New Jersey ◽  
Perennial Ryegrass ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Host Plants ◽  
Cynodon Dactylon ◽  
Poa Pratensis ◽  
Kentucky Bluegrass ◽  
Grass Species ◽  
Red Fescue

Studies were conducted on the host plants of four billbug species (Coleoptera:Curculionidae: Sphenophorus parvulus Gyllenhal, S. venatus Chitt., S. inaequalis Say, and S. minimus Hart) found on New Jersey turfgrasses. A collection of 4803 adults from pure stands of various turfgrasses revealed all four billbugs on Kentucky bluegrass (Poa pratensis L.), tall fescue (Festuca arundinacea Schreb.), and perennial ryegrass (Lolium perenne L.), and S. parvulus, S. venatus, and S. minimus on Chewings fescue (F. rubra L. ssp. commutata Gaud.). Since the presence of larvae, pupae, or teneral adults more accurately indicates the host status of a grass species, immature billbugs were collected from plugs of the various grass species and reared to adults for identification. All four species were reared from immature billbugs found in Kentucky bluegrass turf; immatures of S. venatus, S. inaequalis, and S. minimus were found in tall fescue; S. venatus and S. minimus in perennial ryegrass; and S. inaequalis in strong creeping red fescue (F. rubra L. ssp. rubra). A laboratory experiment was also conducted in which billbug adults were confined in petri dishes with either Kentucky bluegrass, perennial ryegrass, tall fescue, or bermudagrass (Cynodon dactylon Pers.). Only minor differences were found between the four grasses in billbug survival, number of eggs laid, and amount of feeding. In general, bermudagrass was the least favored host and the other grasses were equally adequate hosts. The results of this study indicate a need for updating host-plant lists of these four billbug species.

Heat Tolearance Screening of Field‐Grown Cultivars of Kentucky Bluegrass and Perennial Ryegrass 1

1983 ◽  
Vol 75 (5) ◽  
pp. 772-775 ◽  
Author(s):  
D. D. Minner ◽  
P. H. Dernoeden ◽  
D. J. Wehner ◽  
M. S. McIntosh
Keyword(s):  
Perennial Ryegrass ◽  
Kentucky Bluegrass
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