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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Gleason, M. L.;
Christians, N. C. [E.];
Newton, J. P. |
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| Author Affiliation: | Department of Plant Pathology; Department of Horticulture; Veenker Golf Course, Iowa State University, Ames, IA 50011 |
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| Title: | Evaluation of fungicides for control of brown patch in creeping bentgrass, 1993 |
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| Source: | Fungicide and Nematicide Tests. Vol. 49, 1994, p. 328. |
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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: Agrostis stolonifera; Brown patch; Rhizoctonia solani; Fungicide evaluation; Fungicides; Disease control
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| Abstract/Contents: | "Trials were conducted at Veenker Golf Course on the campus of Iowa State University, Ames, IA. Fungicides were applied to creeping bentgrass maintained at 5/32-inch cutting height, using a modified bicycle sprayer at 30 psi and a dilution rate of 5 gal/1000 ft2. The experimental design was a randomized complete block with three replications. All plots measured 4 ft X 5 ft. All plots were surrounded by 1-ft-wide strips of untreated turf in order to help create uniform disease pressure. Fungicide applications began on 11 Jun and were repeated at recommended intervals on 19 and 25 Jun and 2, 9, 16, 23, and 30 Jul. Disease development was rated on 14 Jul, 30 Jul, and 6 Aug. The summer of 1993 was the wettest in Iowa since 1851. Heavy, frequent rainfall in June through August favored disease development, but below-normal temperatures helped to suppress brown patch. Disease pressure on the test plot was moderate to severe on 14 Jul and 6 Aug and severe on 30 Jul. Most formulations suppressed disease significantly on each rating date. Several treatments provided excellent control on all rating dates. Two treatments, Thalonil 90 at 3.5 oz at a 14-day interval and TRA 0028 at 6.0 oz at a 14-day interval, showed no disease on any rating date. No phytotoxicity was observed for any treatments. PCNB 75 W formulations at the 4-oz rate and 7-day intervals caused moderately severe yellowing and browning of the turf in Jul and Aug. Sentinel 40 WG caused a slightly enhanced green color of the turf by early Aug. |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract, with table, only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gleason, M. L., N. C. [E.] Christians, and J. P. Newton. 1994. Evaluation of fungicides for control of brown patch in creeping bentgrass, 1993. Fungicide Nematicide Tests. 49:p. 328. |
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