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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2012/T030.pdf
Last checked: 11/14/2016
Requires: PDF Reader
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| Publication Type:
| Report |
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| Author(s): | Popko, J.;
Campbell-Nelson, K.;
Jung, G. |
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| Author Affiliation: | Dept. of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA |
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| Title: | Dollar spot control on a creeping bentgrass and annual bluegrass putting green, 2011 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 6, 2012, p. T030. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 2 |
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| Related Web URL: | http://www.plantmanagementnetwork.org/pub/trial/PDMR/volume6/abstracts/T030.asp
Last checked: 04/30/2012
Access conditions: Document is within a limited-access website
Notes: Summary only |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Buffer zones; Copper spot; Dollar spot; Fungicide evaluation; Gloeocercospora sorghi; Native soil greens; Noctuidae; Rhizoctonia blight; Sclerotinia homoeocarpa
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| Cultivar Names: | L-93 |
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| Abstract/Contents: | "This trial was conducted at the Joseph Troll Turf Research Center in South Deerfield, MA to evaluate fungicide treatments for control of dollar spot under natural disease conditions. The plot consisted of creeping bentgrass and annual bluegrass maintained on a native soil (Hadley silt loam) 'push-up' green established in 2006. Mowing was performed five times per week (0.156-in. cutting height) with a Toro Flex 21 greens mower and clippings collected. 17-0-17 fertilizer was applied at a rate of 1.0 lb nitrogen (N)/1,000 ft2 on 13 May. Tupersan 50WP was applied 10 May to control crabgrass at a rate of 24 lb/A. Sevin SL was applied at a rate of 4.0 fl oz/1,000 ft2 on 1 Jun to control cutworms. The putting green was irrigated as needed to prevent drought stress. Individual plots measured 3 ft x 6 ft with a 1-ft buffer strip and were arranged in a randomized complete block design with three replications. A moderate dollar spot outbreak occurred in late May and all treatments were applied curatively. Treatments were initiated on 1 Jun and continued through 24 Aug. All individual treatments were applied at a nozzle pressure of 40 psi using a CO2-pressurized boom sprayer equipped with two XR TeeJet 8004VS nozzles in the equivalent of 2 gallons of water per 1,000 ft2. Weekly ratings for dollar spot were made by counting individual infection centers. Secondary disease ratings were taken for brown patch and copper spot. All disease assessments were subject to analysis of variance and means were separated using Fisher's protected least significant difference test (P < 0.05). Damage from dollar spot, brown patch and copper spot was observed and rated over the course of the trial. A moderate dollar spot outbreak occurred prior to the first application on 2 Jun and persisted until the 7 Jul (untreated plots averaged 27.3 dollar spot infection centers from 1 Jun to 7 Jul). A second and more severe epidemic began on 27 Jul and continued through the final rating date (untreated plots averaged 55.2 infection centers from 27 Jul to 14 Sept). All treatments provided significantly better control than the untreated for season long (AUDPC) dollar spot control. Brown patch was most severe on 29 Jun with untreated plots reaching a mean disease severity of 45%. All treatments rates of IKF-5411 had significantly higher levels of brown patch than all other fungicide treatments and only the highest IKF-5411 contained significantly less brown patch than the untreated. An epidemic of copper spot was observed from 3 Aug to 24 Aug and untreated plots averaged 22 infection centers over that time period. Significantly lower levels of copper spot were observed in all treatments except the untreated and all treatments containing Velista. No phytotoxicity was observed in any of the fungicide treatments throughout the course of the study." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Popko, J., K. Campbell-Nelson, and G. Jung. 2012. Dollar spot control on a creeping bentgrass and annual bluegrass putting green, 2011. PDMR: Plant Dis. Manage. Rep. 6:p. T030. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2012/T030.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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