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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2012/T016.pdf
Last checked: 11/14/2016
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Report |
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| Author(s): | Earlywine, D.;
Miller, G. L. |
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| Author Affiliation: | Division of Plant Sciences, University of Missouri, Columbia, MO |
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| Title: | Evaluation of sprayable and granular fungicides for the control of brown patch on tall fescue, 2011 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 6, 2012, p. T016. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 2 |
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| Related Web URL: | http://www.plantmanagementnetwork.org/pub/trial/PDMR/volume6/abstracts/T016.asp
Last checked: 04/30/2012
Access conditions: Document is within a limited-access website
Notes: Summary only |
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| Keywords: | TIC Keywords: Azoxystrobin; Azoxystrobin + Propiconazole; Festuca arundinacea; Fluoxastrobin; Fungicide evaluation; Inoculation; Myclobutanil; Penthiopyrad; Preventive control; Rhizoctonia solani; Trifloxystrobin + triadimefon; Urea
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| Cultivar Names: | Rembrandt |
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| Trade Names: | Heritage; Headway; Disarm; Eagle 20EW; Velista; Armada |
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| Abstract/Contents: | "Sprayable and granular fungicides were evaluated for control of brown patch at the University of Missouri Turfgrass Research Facility in Columbia on 'Rembrandt' tall fescue. Mowing was performed one to two times weekly at a height of 3.0 in. One application of Urea (46-0-0) was applied at 1.0 lb N/1,000 sq ft on 12 May to promote brown patch development. Plots were 5 x 10 ft and arranged in a randomized complete block with four replications. Sprayable treatments were applied in water equivalent to 2 gal/1,000 sq ft with a CO2 powered sprayer at 25 psi using TeeJet 8008 nozzles. Granular treatments were applied evenly over the plot area by hand using a shaker bottle. Following application, only granular treatments were immediately watered-in with 0.25-in. of irrigation applied by hand with a hose and shower nozzle. On 27 June, 25 cc of rye grain infested with Rhizoctonia solani were placed in the center of each plot. A clear 5 fl oz plastic cup was placed over inoculum, and left on the turf for 3 d to incubate the pathogen. Disease severity and turfgrass quality were assessed every 7-14 days from initial symptom development. Disease severity was assessed as a visual estimation of the percent symptomatic area within the plot. Turfgrass quality was evaluated using a 1 to 9 scale (9=best, 5=acceptable) based on color, density, and uniformity. Data were subjected to analysis of variance and means separation by Waller-Duncan k-ratio t-test (k=100). Preventative applications were initiated on 16 May at an approximate 14 and 28 d interval. Brown patch symptoms were first observed on 7 June. By 5 July, fungicide treated plots had significantly lower brown patch severity than untreated plots. No differences in brown patch severity were noted comparing Heritage and Headway granular and sprayable treatments. On several rating dates, plots sprayed with Disarm at 0.18 and 0.36 fl oz/1,000 sq ft had significantly lower brown patch severity than plots with granular Disarm treatments. By the 15 Aug rating, Eagle 20EW and Disarm G (4.6 lb/1,000 sq ft) tended to provide less control of brown patch. No phytotoxicity was observed from any fungicide treatment. On 7 Jul, turf quality was significantly higher in all treated plots, except Disarm G (4.6 lb/1,000 sq ft) compared to the untreated control. On the 25 July rating date, Heritage G (3 lb/1,000 sq ft) applied every 14d had significantly higher turf quality than the other treatments tested. Granular fungicides, except for Disarm G, performed similarly to sprayable fungicides in reducing brown patch while maintaining acceptable turf quality. Turf quality varied little among fungicide treatments, although granular applications of Disarm fell below acceptable levels (ā¤5)." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Earlywine, D., and G. L. Miller. 2012. Evaluation of sprayable and granular fungicides for the control of brown patch on tall fescue, 2011. PDMR: Plant Dis. Manage. Rep. 6:p. T016. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2012/T016.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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