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| Web URL(s): | https://scisoc.confex.com/scisoc/2018am/meetingapp.cgi/Paper/111421
Last checked: 11/14/2018
Requires: JavaScript |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Beckley, Cody;
Roberts, Joseph |
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| Author Affiliation: | Beckley: University of Maryland, Silver Spring, MD; Roberts: Plant Science and Landscape Architecture, University of Maryland, College Park, MD |
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| Title: | Evaluating the impact of organic amendments on suppression of dollar spot and residual fungicide efficacy on bentgrass fairways |
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| Section: | C05 turfgrass science
Other records with the "C05 turfgrass science" Section
Applied pest management: Diseases and weeds (Includes student competition)
Other records with the "Applied pest management: Diseases and weeds (Includes student competition)" Section
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| Meeting Info.: | Baltimore, Maryland: November 4-7, 2018 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2018, p. 111421. |
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| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Canadian Society of Agronomy] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis; Disease control; Dollar spot; Fungicide efficacy; Golf fairways; Organic amendments
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| Abstract/Contents: | "Dollar spot (Clarireedia spp.) is a common disease of turfgrass worldwide, which typically requires multiple fungicide applications for control. Naturally suppressive organic amendments are an alternative management tool that merits further evaluation. A 2-yr trial was initiated in late 2016 on creeping bentgrass (Agrostis stolonifera L.) maintained as a golf course fairway to evaluate fertility and fungicide source for impact on dollar spot development on a newly established creeping bentgrass cv. 007 fairway. Main-plot treatments were applied as a municipal waste compost and a biochar applied at establishment and as a topdressing applied bi-annually, a vermicompost + fertility treatment, a standard fertility treatment, and none. Nitrogen fertility levels for all treatments were standardized at approximately 4.2 lbs. of nitrogen per 1,000 sq. ft. annually. Sub-plot fungicide treatments were applied as a 14 d contact, contact threshold, 14 d penetrant, penetrant threshold, and none. Threshold treatments were made when > 2 infection centers were counted on two of four replicates. During the trial period, the most consistent treatments for dollar spot reduction during periods of high pressure were the biochar, vermicompost and standard fertility treatments. Municipal waste compost treatments were more effective in the spring of each growing season. When considering seasonal control of dollar spot, all fertility treatments were similar in 2017. In 2018, the greatest reductions came from the biochar, vermicompost, and standard fertility treatments. All fungicide treatments effectively reduced dollar spot when applied at designated 14-day intervals. In 2017, the vermicompost + standard fertility treatment provided the longest duration of control for both threshold treatments. In 2018, we have seen little to no effect from organic amendments on residual fungicide control. Though many other factors are under consideration, preliminary data suggests N-availability is the driving factor for fertility-mediated dollar spot suppression." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related article "Effects of organic amendments on dollar spot in bentgrass fairways" Golf Course Management, 87(5) May 2019, p. 73, R=305358. R=305358 |
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| Note: | This item is an abstract only!
"140-1" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Beckley, C., and J. Roberts. 2018. Evaluating the impact of organic amendments on suppression of dollar spot and residual fungicide efficacy on bentgrass fairways. Agron. Abr. p. 111421. |
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Last checked: 11/14/2018
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