Full TGIF Record # 155250
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Web URL(s):http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume3/abstracts/t38.asp
    Last checked: 09/21/2009
    Notes: Report Summary
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T038.pdf
    Last checked: 02/21/2017
    Requires: PDF Reader
Publication Type:
i
Report
Author(s):Soika, M. D.; Tredway, L. P.
Author Affiliation:Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina
Title:Preventative control of gray leaf spot in tall fescue landscapes, 2008
Source:PDMR: Plant Disease Management Reports. Vol. 3, 2009, p. T038.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Azoxystrobin; Azoxystrobin + Propiconazole; Disease control; Festuca arundinacea; Gray leaf spot; Myclobutanil; Polyoxin D; Preventive control; Propiconazole; Pyricularia grisea; Thiophanate-methyl
Cultivar Names:Kentucky 31
Trade Names:3336 Plus; Banner MAXX; Eagle; Endorse; Headway; Heritage
Abstract/Contents:"Fungicides were evaluated for control of gray leaf spot in tall fescue. This trial was conducted at the Lake Wheeler Turfgrass Field Laboratory in Raleigh, NC on newly established 'Kentucky 31' tall fescue that was seeded on 1 May (10 lb seed/1,000 sq ft) and maintained under home lawn (landscape) conditions. Mowing was performed once weekly at a height of 3.5-in. with clippings returned. Fertilizer was applied as 18-24-12 on 2 May (0.9 lb nitrogen (N)/1,000 sq ft), and 18-9-18 on 29 May and 7 Aug (1 lb N/1,000 sq ft respectively). Subdue MAXX (1.0 fl oz/1,000 sq ft) was applied on 5 and 24 Jun and 24 Jul for suppression of Pythium foliar blight. ProStar (2.25 oz/1,000 sq ft) was applied on 5 and 24 Jun and 25 Jul to prevent brown patch. Acclaim Extra was applied on 27 Jun and 10 and 29 Jul (0.64, 0.55, 0.64 fl oz/1,000 sq ft, respectively) for control of grassy weeds. Broadleaf weeds were controlled with Trimec Classic on 8 and 29 Jul (1.4 and 1.2 fl oz/1,000 sq ft, respectively) and with Turflon Ester (0.73 fl oz/1,000 sq ft) on 10 Jul. Plots were 5 ft x 6 ft and arranged in a randomized complete block with four replications. Fungicides were applied in water equivalent to 2 gal per 1,000 sq ft with a CO2-powered sprayer at 40 psi using TeeJet 8004 nozzles. All treatments were initiated on 12 Jun and repeated on a 14-day interval with treatments ending 7 Aug. Beginning on 8 Jul, the study was irrigated with 0.13 in. water daily at 8:00 and 20:00 hr to produce environmental conditions conducive to disease development. Percent turf area exhibiting gray leaf spot symptoms was assessed on 23 and 30 Jul and 6, 14, and 26 Aug. Data were subjected to analysis of variance and means separation by Waller-Duncan k-ratio t test (k=100). Gray leaf spot incidence was high in the experiment with more than 68% disease incidence in untreated plots on 26 Aug. Endorse and low rates of GF-1948, Banner MAXX, and Eagle were not effective in controlling gray leaf spot in this study. Headway and the high rate of 3336 Plus were the most effective treatments throughout the study. Heritage and the low rate of 3336 Plus also provided good control early in the trial, but control broke down as the disease intensified on 14 and 26 Aug. No phytotoxic effects were observed in the trial."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Soika, M. D., and L. P. Tredway. 2009. Preventative control of gray leaf spot in tall fescue landscapes, 2008. PDMR: Plant Dis. Manage. Rep. 3:p. T038.
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Web URL(s):
http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume3/abstracts/t38.asp
    Last checked: 09/21/2009
    Notes: Report Summary
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T038.pdf
    Last checked: 02/21/2017
    Requires: PDF Reader
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