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| Publication Type:
| Report |
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| Author(s): | Clarke, B. B.;
Majumdar, P.;
Hlubik, W. |
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| Author Affiliation: | Dept. of Plant Pathology, Cook College, Rutgers University, New Brunswick, NJ 08903 |
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| Title: | Preventive control of dollar spot with selected fungicides and subsequent impact on brown patch, 1994 |
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| Section: | Turf Grass Reports
Other records with the "Turf Grass Reports" Section
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| Source: | Fungicide and Nematicide Tests. Vol. 50, 1995, p. 341-342. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Dollar spot; Brown patch; Disease control; Fungicides; Visual evaluation; Fungicide evaluation
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| Abstract/Contents: | "Several experimental and commercially available fungicides were evaluated for their ability to control dollar spot and brown patch at the Rutgers Turf Research Farm in North Brunswick, NJ. The test area consisted of a creeping bentgrass green established Sep 1985 and maintained at a 0.19 in. cutting height. Soil was a Norton loam with pH of 6.5. Turf was fertilized with 1.0 lb actual nitrogen (N)/1000 sq ft (34-0-0) on 29 Apr, with 0.5 lb actual N/1000 sq ft (34-0-0) on 10 May, and with 0.5 lb actual N/1000 sq ft (20-3-20) on 26 Jul. The experimental area was aerified with 0.38 in. x 3 in. hollow tynes (2.0 in. spacing) and then topdressed with a 0.125 in. layer of Fertile Soil on 17-18 May. Weeds were controlled with 0.5 lb 2, 4-D = 0.25 lb dicamba/A on 16 Nov 1993. Turf was irrigated as needed to avoid drought stress. Plots were 3 ft x 9 ft and were arranged in a randomized complete block design with four replications. Treatments were applied with a CO₂ compressed air sprayer, using TeeJet 8003E nozzles, adjusted to 30 psi, in water equivalent to 1.9 gal/1000 sq ft. Fungicides were applied on 9 Jun (all treatments), 16 Jun (7 day treatment only), 23 Jun (7/14 day treatments), 30 Jun (7/21 day treatments), 7 Jul (7/14/28 day treatments), 14 Jul (7 day treatment only), 21 Jul (7/14/21/42 day treatments), 28 Jul (7 day treatment only), and 4 Aug (7/14/28 day treatments). Plots were artificially inoculated on 4 Jun by scattering S. homoeocarpa-infested, pulverized, oat grain over the entire test area to supplement natural infection. Treatments were visually evaluated for number of dollar spot lesion centers per plot every seven to ten days from 16 Jun to 29 Sep. Data were analyzed using an analysis of variance (ANOVA) and Duncan's Multiple Range Test (DMRT). Data from 29 Jul, 8 Aug, 17 Aug, 24 Aug, 9 Sep, and 29 Sep are presented. A natural outbreak of brown patch data were subjected to an arc-sin transformation prior to statistical analysis with ANOVA and DMRT. Dollar spot and brown patch ratings exceeding nine lesion centers/plot and ten percent turf area infected, respectively, would be considered an unacceptable level of control." More details are given. |
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| Language: | English |
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| References: | 0 |
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| Note: | Report #332
Table |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Clarke, B. B., P. Majumdar, and W. Hlubik. 1995. Preventive control of dollar spot with selected fungicides and subsequent impact on brown patch, 1994. Fungicide Nematicide Tests. 50:p. 341-342. |
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