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| Publication Type:
| Report |
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| Author(s): | DiMarco, J. N.;
Majumdar, P. R.;
Tredway, L. P.;
Towers, G. W.;
Weibel, E. N.;
Clarke, B. B. |
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| Author Affiliation: | Department of Plant Pathology. Rutgers University, New Brunswick, NJ |
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| Title: | Evaluation of selected fungicides for the control of brown patch, 1998 |
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| Source: | Fungicide and Nematicide Tests. Vol. 54, 1999, p. 529. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Festuca arundinacea; Brown patch; Rhizoctonia solani; Disease control; Fungicide evaluation; Disease severity; Application rates; Application frequency; Azoxystrobin; Tank mix; Fosetyl Al
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| Cultivar Names: | Rebel II |
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| Abstract/Contents: | "Fungicides were evaluated for their ability to control brown patch on tall fescue at the Plant Science Research Farm in Adelphia, NJ. The turf was established Sep 1991 on a Freehold sandy loam with a pH of 6.5. The site was mowed at a height of 2.0 in., two times per week, and clippings were not collected. Turf was irrigated to prevent drought stress. Fertilizer was applied as 15-0-0 on 9 Apr (0.75 lb N/1000 sq ft) and 5 Jun (1 lb N/1000 sq ft), and 16-4-8 on 14 Jul (0.75 lb N/1000 sq ft). Datchal 6F (5.3 fl oz/1000 sq ft) was applied for preemergence weed control on 8 Apr. Postemergence weed control was provided by 2,4-D-1 amine (3.67 fl oz/1000 sq ft), MCPP-2 amine (0.55 fl oz/1000 sq ft), and Banvel-4 amine (0.18 fl oz/1000 sq ft) on 21 Apr. Plots were 3 ft x 9 ft and were arranged in a randomized complete block design with four replications. Fungicides were applied in water equivalent to 2 gal per 1000 sq ft with a CO₂ powered sprayer at 30 psi using TeeJet 8003E nozzles. Treatments were initiated on 7 Jul. Fungicides were reapplied as indicated in the table. Percent turf area infested with R. solani was assessed on 31 Jul, 12 Aug, and 2 Sep. Data were subjected to analysis of variance and means separation by Waller-Duncan k-ratio t-test (k=100). Brown patch first developed on 16 Jul and increased steadily from the end of July into early September. All treatments except Chipco Triton 1.67SC applied every 21 days (trt 6), provided good to excellent disease control of brown patch on 31 Jul. All fungicides applied on a 14 day schedule (trt 1-5, 7,8, and 10) provided excellent disease control on 12 Aug (22 days after the final application). However, fungicides applied on a 21 day schedule (trt 6 and 9) were less effective in suppressing brown patch on that date. By 2 Sep, 36 to 43 days post-treatment, none of the fungicides entries afforded adequate control of the target disease. Phytotoxicity was not observed." |
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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):
DiMarco, J. N., P. R. Majumdar, L. P. Tredway, G. W. Towers, E. N. Weibel, and B. B. Clarke. 1999. Evaluation of selected fungicides for the control of brown patch, 1998. Fungicide Nematicide Tests. 54:p. 529. |
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