| |
| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2011/T037.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Report |
|---|
| Author(s): | Settle, D.;
Sibicky, T.;
Rincker, K. |
|---|
| Author Affiliation: | Settle and Sibicky: Chicago District Golf Association, Lemont; Rincker: University of Illinois, Urbana-Champaign, IL |
|---|
| Title: | Fungicides and alternatives for curative control of fairy ring on a bentgrass-Poa annua golf green in Chicago, 2010 |
|---|
| Section: | Turfgrass
Other records with the "Turfgrass" Section
|
|---|
| Source: | PDMR: Plant Disease Management Reports. Vol. 5, 2011, p. T037. |
|---|
| Publishing Information: | St. Paul, MN: American Phytopathological Society |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Agrostis stolonifera; Disease control; Fairy rings; Fungicide efficacy; Fungicide evaluation; Golf greens; Poa annua; Therapeutic control; Turfgrass quality
|
|---|
| Cultivar Names: | Penncross |
|---|
| Geographic Terms: | Chicago, Illinois |
|---|
| Abstract/Contents: | "Fungicides and alternative products were evaluated for the control of fairy ring on an established USGA-constructed green at Kemper Lakes Country Club, in Kildeer, IL; a northwest Chicago suburb. The green surface was approximately 50% creeping bentgrass 'Penncross' (Agrostis stolonifera) and 50% Poa annua. The turf was mowed 7 days weekly to a height of 0.120-in. and fertilized with 3.0 lb N/1,000 ft2 during the season. Individual plots were 4 ft x 6 ft and arranged in a randomized complete block design with 4 replications. Treatments were delivered at labeled rates for fairy ring using a CO2-powered backpack sprayer with 8004 TeeJet flat fan nozzles at 40 psi in water equivalent to 2 gal/1,000 ft2. After application, the irrigation system was used to lightly water-in products. Nine treatments were applied 14 May, 9 Jun, 8 Jul, and 2 Aug, representing a 28-day application interval. Two treatments, nitrogren (N) by urea and ConSan Triple Action 20 (wetting agent), were applied during the same period using a 14-day application interval. Type II fairy rings (lush, stimulated turf) were well-distributed across the study area when the first application was made. Rings varied in size and were approximately 6 in. to several feet in diameter. Biweekly, from 14 May to 17 Aug, disease was assessed visually and data included; fairy ring number, fairy ring percent, and fairy ring symptom color intensity on an individual plot basis. Visual quality was also rated (1 to 9 scale, where 1 = entire plot area brown or dead; 6 = minimum acceptable color and quality for a putting green in summer; and 9 = optimum greenness, texture and density) to monitor for acceptable quality and quantify any phytotoxicity. This was the second consecutive year of treatments at this site. The golf course has a history of type II fairy ring on greens, but during 2009, fairy ring largely failed to develop, perhaps due to mild summer temperatures. In 2010, first symptoms rapidly developed the second week of May. Untreated plots saw peak symptom development twice with 10% on 25 May and 17.5% on 20 Jul. Compared to untreated, treatment differences were not detected by any fairy ring measurement during May or Jun (data not shown). At this site, data suggests type II symptoms of fairy ring are not easily suppressed by curative fungicide applications. By 25 Jun, symptoms in untreated plots had subsided to 7.5%. A second peak of fairy ring occurred during July at which time, three 28 day applications of fungicides had occurred on the plots. On both rating dates in July, all fungicides reduced fairy ring percent and intensity compared to untreated. In contrast, the alternatives including N by urea and Consan Triple Action 20 applied every 14 days did not reduce fairy ring in any parameters measured. Visual quality was different on every date rated following the initial 14 May rating. Visual quality was also influenced by treatment effects on turf color. For example N by urea consistently enhanced green color, while Consan, Headway G, Headway EC + Revolution were, at times, associated with yellowing/bronzing of turf. Nevertheless, several fungicides exhibited acceptable visual quality (>= 6.0) across both July rating dates, a time of peak midsummer heat stress. Fungicides with acceptable quality in July were ProStar, ProStar + Heritage, Triton FLO, and Tourney. ProStar combined with Heritage TL improved visual quality over Heritage TL alone. In this study, we found label rates of two newer DMIs, Triton FLO and Tourney, suppressed fairy ring without causing phytotoxicity. Evaluating turfgrass throughout the entire study we found light, frequent applications of N by urea enhanced visual quality compared to other treatments. Nitrogen did not reduce fairy ring, instead visually greener turf meant rings and arcs were less objectionable." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| See Also: | Other items relating to: Fairy Rings |
|---|
| Note: | This item is as abstract and tables only!
Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Settle, D., T. Sibicky, and K. Rincker. 2011. Fungicides and alternatives for curative control of fairy ring on a bentgrass-Poa annua golf green in Chicago, 2010. PDMR: Plant Dis. Manage. Rep. 5:p. T037. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=178513 |
| If there are problems with this record, send us feedback about record 178513. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2011/T037.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
