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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Dernoeden, P. H.;
Praemassing, W. |
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| Author Affiliation: | Dept. of Agronomy, Univ. of Maryland, College Park, MD |
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| Title: | Brown patch control in a bentgrass putting green, 1990 |
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| Source: | Fungicide and Nematicide Tests. Vol. 46, 1991, p. 301. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| Keywords: | TIC Keywords: Fungicides; Agrostis; Brown patch; Research; Chlorothalonil; Triadimefon; Disease control; Diseases; Spray records; Rhizoctonia solani; Agrostis stolonifera
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| Abstract/Contents: | "Fungicides were applied prior to any brown patch activity to a bentgrass turf maintained at putting green height. Soil was a loamy sand with a pH of 6.6 and 4.4% OM. Treatments were applied on either a 14 or 28 day interval on the dates footnoted in the data table. Fungicides were sprayed with a CO2 pressurized (36 psi) sprayer in a 2.5 gal water per 1000 ft2. Plots were 5 by 5 ft, and were arranged as a randomized complete block with four replications. Percent of plot area blighted was determined visually on a 0 to 100% scale. Ratings that exceed 2.0% plot area blighted would be considered unacceptable brown patch control for putting green turf. Brown patch blighting began in early Jul, and disease pressure was severe by mid-Jul. All plots were treated on 2 Jul and it was evident by 9 and 16 Jul that the low and high rates of ASC 66811, respectively were not going to effectively control brown patch. Systhane applied since 2 May on the 14-day interval provided commercially acceptable control throughout the test. However, the same rate of Systane applied on a 28 day interval was not providing acceptable control as early as 9 Jul. Daconil 4F + ASC 66811 treatments were last applied on 2 Jul, and their residual effectiveness had begun to dissipate by 23 Jul. All three formulations of Daconil (applied on 14 day intervals) as well as ProStar + Bayleton and SN 84364 (applied on 28 day intervals) provided excellent brown patch control throughout the test period." |
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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!
Table |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dernoeden, P. H., and W. Praemassing. 1991. Brown patch control in a bentgrass putting green, 1990. Fungicide Nematicide Tests. 46:p. 301. |
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