Full TGIF Record # 225825
Item 1 of 1
Publication Type:
i
Report
Author(s):Pigati, R. L.; Dernoeden, P. H.; Grybauskas, A. P.
Author Affiliation:Pigati: Agriculture Research Technician
Title:Another look at dollar spot control in creeping bentgrass as influenced by fungicide spray volume and application timing
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. 55.
# of Pages:1
Publishing Information:College Park, Maryland: University of Maryland Department of Plant Science & Landscape Architecture
Keywords:TIC Keywords: Agrostis stolonifera; Application timing; Chlorothalonil; Dollar spot; Fungicides; Propiconazole; Sclerotinia homoeocarpa
Cultivar Names:Crenshaw; Backspin; Providence
Abstract/Contents:"The importance of spray volume and application timing of a fungicide targeting dollar spot (Sclerotinia homoeocarpa F. T. Bennett) has received study with conflicting results. The objectives of this three year field study were to assess the influence of two spray volumes (468 and 935 L water ha-1) and two application timings (AM with canopy dew and PM to a dry canopy) for fungicides targeting dollar spot curatively. Chlorothalonil (8.5 kg a.i. ha-1), propiconazole (0.5 kg a.i. ha-1), and a tank-mix of chlorothalonil + propiconazole (same rates) were compared on fairway height stands of 'Crenshaw' (2007 and 2008), 'Backspin' (2008) and 'Providence' (2009) creeping bentgrass (Agrostis stolonifera L.). There were no spray volume differences in 2007 or 2009. In Crenshaw, there was less dollar spot in chlorothalonil-treated plots using the low versus high spray volume, but the opposite occurred in Backspin in 2008. Less dollar spot developed in propiconazole?treated plots subjected to the low versus high spray volume in 2008. Somewhat higher levels of dollar spot developed in plots treated with propiconazole in the PM compared to the AM in 2008 (Crenshaw) and 2009. The tank-mix of chlorothalonil + propiconazole was unaffected by spray volume or application timing at all sites. The preponderance of data indicated that the curatively applied fungicides generally provided similar levels of dollar spot control, regardless of spray volume or application timing."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pigati, R. L., P. H. Dernoeden, and A. P. Grybauskas. 2009. Another look at dollar spot control in creeping bentgrass as influenced by fungicide spray volume and application timing. Turfgrass Pathol. Weed Sci. Res. Sum. p. 55.
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