Full TGIF Record # 70139
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Web URL(s):https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2000/55-527.pdf
    Last checked: 05/04/2017
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Publication Type:
i
Report
Author(s):Uddin, W.; Soika, M. D.
Author Affiliation:Department of Plant Pathology, The Pennsylvania State University, University Park, Pennsylvania
Title:Control of Pythium foliar blight on perennial ryegrass, 1999
Section:Turf grass reports
Other records with the "Turf grass reports" Section
Source:Fungicide and Nematicide Tests. Vol. 55, 2000, p. 527.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Disease severity; Lolium perenne; Pythium aphanidermatum; Pythium diseases; Fungicides; Fungicide evaluation; Fungicide combinations; Disease control; Golf fairways
Cultivar Names:Pennfine
Abstract/Contents:"There were two experiments in this study conducted at the Valentine Turfgrass Research Center, University Park, PA, on perennial ryegrass maintained under golf course fairway management conditions, and mowed three times per week at 0.5-inch cutting height. The soil was Hagerstown silt loam with pH 7.0. The experimental area was fertilized on 17 May with 1.0 lb nitrogen (Scotts 31-3-10) per 1000 sq ft, 10 Jun with 1.0 lb nitrogen (Nutralene 40-0-0) per 1000 sq ft, and on 21 Jun with 0.5 lb nitrogen (urea 46-0-0) per 1000 sq ft. Lesco Benomyl 50WP (2.0 oz/1000 sq ft) was applied on 22 Jun and 2 Jul for control of brown patch. Trimec Classic 3.32EC (1.5 fl oz per 1000 sq ft) was applied on 15 Jun for control of broadleaf weeds. Treatment plots, 3 ft x 7 ft, were arranged in a randomized complete block design with three replications. In both experiments, fungicides were applied on 3 Jul with a CO₂-powered boom sprayer using TeeJet 8004 nozzles at 40 psi, in water equivalent to 2 gal per 1000 sq ft. On 4 Jul, turf in Experiment 1 was enclosed in a 30 ft x 48 ft polyethylene greenhouse to reduce radiational cooling. An internal intermittent misting system provided high relative humidity and leaf surface wetness throughout the experiment. The greenhouse was vented during daylight hours to maintain a temperature range of 85° to 95°F. Vents were closed during the night. On 8 Jul, five days after treatment, disease severity was assessed. On 10 Jul, seven days after treatment, the turf area of Experiment 2 was enclosed in a 30 ft x 48 ft polyethylene green house, inoculated with a 6-isolate pool of Phythium aphanidermatum , and was maintained as described above for Experiment 1. On 16 Jul, thirteen days after treatment, disease severity in Experiment 2 was assessed. Data were subjected to analysis of variance and multiple comparisons of the mean values were made using the Waller-Duncan k-ratio test. In Experiment 1, disease assessment (five days after inoculation) indicated that the two Compass plus Subdue Maxx combination treatments, and the Subdue Maxx treatment provided excellent control of Pythium foliar blight. In Experiment 2, disease assessment (thirteen days after inoculation) indicated that note of the fungicides provded satisfactory control; however, [the] high rate of Banol provided better control where disease severity for the high rate of Banol teratment was significantly lower than that of the remaining treatments and the untreated check. It should be noted that conditions in the greenhouses, such as continuous leaf surface wetness, high relative humidity, and warm temperature, were higly conducive for infection by P. aphanidermatum, and subsequent disease development in these experiments. Therefore, the disease severity was extremely high in the untreated check plots throughout the experiments."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Uddin, W., and M. D. Soika. 2000. Control of Pythium foliar blight on perennial ryegrass, 1999. Fungicide Nematicide Tests. 55:p. 527.
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https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2000/55-527.pdf
    Last checked: 05/04/2017
    Requires: PDF Reader
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