Full TGIF Record # 155242
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Web URL(s):https://www.plantmanagementnetwork.org/pub/trial/pdmr/volume3/abstracts/t32.asp
    Last checked: 03/21/2017
    Notes: Report Summary
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T032.pdf
    Last checked: 02/21/2017
    Requires: PDF Reader
Publication Type:
i
Report
Author(s):Settle, D.; Rincker, K.; Kane, R.
Author Affiliation:Chicago District Golf Association, Lemont, Illinois
Title:Fungicides and plant protectants for control of brown patch and dollar spot on a creeping bentgrass fairway, 2008
Source:PDMR: Plant Disease Management Reports. Vol. 3, 2009, p. T032.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Agrostis stolonifera; Disease control; Dollar spot; Fungicide efficacy; Fungicide evaluation; Golf fairways; Rhizoctonia blight; Rhizoctonia solani; Sclerotinia homoeocarpa
Cultivar Names:Alpha
Abstract/Contents:"Fungicides and protectants were evaluated on an established stand of 'Alpha' bentgrass at the CDGA Sunshine Golf Course, Lemont IL, a southwest Chicago suburb. The fairway was mowed 3 days a week at a height of 0.5-in. and fertilized with 3 lb nitrogen/1,000 ft2 during the season. Experimental treatments began 16 May and ended 3 Sep. For the Emerald + Daconil Ultrex curative treatment, application was timed as needed whenever disease damage to plots exceeded 5% in 2 of 3 replicates. Treatments were applied with a CO2-powered boom sprayer with XR Tee Jet 8004VS nozzles at 40 psi in water equivalent to 2.0 gal/1,000 ft2. Plots were 4 ft × 6 ft and arranged in a randomized complete block design with three replications. Each block was separated by a 1-ft alley. From 10 Jun to 16 Sep, dollar spot and brown patch disease severities were visually evaluated weekly as percent of plot area affected. Data were subjected to analysis of variance followed by means comparions using Fisher's Protected LSD test. Dollar spot development was delayed in spring, 2008 given cool environmental conditions. Average daily soil temperatures, 2- in. depth, first warmed above 60°F on 26 May. Summer air temperatures were moderate with highs > 90°F on only 7 dates from Jun to Sep in Lemont, IL. Frequent rainfall (23.4-in. precipitation from 15 May to 30 Sep) meant extended durations of leaf wetness contributed to high disease pressure levels. Initial dollar spot infection centers appeared on 10 Jun. Dollar spot peaked in untreated plots on 26 Aug with 50% damage. Brown patch occurred from 22 Jul to 12 Aug and peaked in untreated plots on 5 Aug with 20% damage. Yellowing/phytotoxicity was associated with Dew Cure all season. We observed Dew Cure reduced leaf wetness accumulation and duration. On 21 Jul, brown patch affecting Dew Cure plots was significantly higher than the control. Rhapsody + Daconil Ultrex suppressed brown patch, but dollar spot damage exceeded 10% during Aug and Sep. Alone or in combination with Banner MAXX, Petro- Canada EXP suppressed dollar spot compared to the control. During peak dollar spot pressure in Sep plot damage exceeded 10% in several treatments and included, Daconil Ultrex, Insignia, Petro-Canada EXP, Rhapsody, Banner MAXX, and Petro-Canada EXP + Banner MAXX. Best dollar spot suppression (never exceeding 5%) was provided by the 14 day treatments of Dew Cure, Tourney, and Trinity, as well as by the 21 day treatments of Clearys 26/36, Clearys CX-15, and Emerald. For the season, the curative Daconil Ultrex + Emerald required fewest application number total using 3 versus 9 for the 14 day preventive schedule and 6 for the 21 day preventive schedule."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Settle, D., K. Rincker, and R. Kane. 2009. Fungicides and plant protectants for control of brown patch and dollar spot on a creeping bentgrass fairway, 2008. PDMR: Plant Dis. Manage. Rep. 3:p. T032.
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Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/volume3/abstracts/t32.asp
    Last checked: 03/21/2017
    Notes: Report Summary
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T032.pdf
    Last checked: 02/21/2017
    Requires: PDF Reader
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