Full TGIF Record # 225824
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Author(s):Pigati, R. L.; Dernoeden, P. H.; Grybauskas, A. P.; Momen, B.
Author Affiliation:Pigati: Agriculture Research Technician
Title:Simulated rainfall and mowing impact fungicide performance when targeting dollar spot in creeping bentgrass
Section:Abstracts and weather data
Other records with the "Abstracts and weather data" Section
Source:2009 Turfgrass Pathology, Weed Science and Management Research Summaries [University of Maryland]. 2009, p. 54.
# of Pages:1
Publishing Information:College Park, Maryland: University of Maryland Department of Plant Science & Landscape Architecture
Keywords:TIC Keywords: Agrostis stolonifera; Boscalid; Chlorothalonil; Dollar spot; Fungicide evaluation; Iprodione; Propiconazole; Sclerotinia homoeocarpa
Abstract/Contents:"In this two- year field study, four chemically diverse fungicides (i.e., chlorothalonil, boscalid, iprodione, and propiconazole) were evaluated for their ability to control dollar spot (Sclerotinia homoeocarpa ) in creeping bentgrass (Agrostis stolonifera) as affected by simulated rain and mowing timing. Simulated rain (25 to 32 mm) was imposed about 30 min after fungicide application and was compared to rain-free plots. One set of plots was mowed in the AM with dew present and compared to plots that were mowed when the canopy was dry in the PM. The percent reduction in dollar spot control associated with simulated rain versus rain-free treatments in 2007 and 2008 was as follows: chlorothalonil 67 and 83%; propiconazole 42 and 79%; boscalid 48 and 70%; and iprodione 33 and 66%. All fungicides subjected to simulated rain provided effective dollar spot control for 7 or more days following the initial application in each year when disease pressure was low. The average percent reduction in dollar spot associated with AM mowing in all fungicide-treated plots over two years ranged from 54 to 65%. The reduction in dollar spot severity in AM mowed plots improved the performance of all fungicides."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pigati, R. L., P. H. Dernoeden, A. P. Grybauskas, and B. Momen. 2009. Simulated rainfall and mowing impact fungicide performance when targeting dollar spot in creeping bentgrass. Turfgrass Pathol. Weed Sci. Res. Sum. p. 54.
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