Full TGIF Record # 124062
Item 1 of 1
Web URL(s):https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2006/T019.pdf
    Last checked: 11/14/2016
    Requires: PDF Reader
Publication Type:
i
Report
Author(s):Vincelli, P.; Dixon, E.; Williams, D.; Burrus, P.
Author Affiliation:Vincelli and Dixon: Department of Plant Pathology; Williams and Burrus: Department of Plant and Soil Science, University of Kentucky, Lexington, Kentucky
Title:Efficacy of fungicides for control of dollar spot of creeping bentgrass on a sand-based green, 2005
Section:Turfgrass
Other records with the "Turfgrass" Section
Source:F&N Tests. Vol. 61, 2006, p. T019.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:2
Keywords:TIC Keywords: Agrostis stolonifera; Dollar spot; Fungicide evaluation; Disease control; Sand-based golf greens; Application rates; Application timing; Disease severity
Cultivar Names:Penncross
Abstract/Contents:"The test was conducted on a sand-based green located at the University of Kentucky Turf Research Center near Lexington. The turf was maintained at a 0.188-in. mowing height, and fertilized with 1.5 lb N/1000 sq ft as Urea on 5 Jan, and with 1.0 lb N/1000 sq ft as 18-0-18 on 17 Jun. Plots measured 3 ft x 3 ft with 1.5-ft borders and were arranged in a randomized complete-block design with three replications. Fungicide sprays were applied using a CO2-pressurized hand-held sprayer fitted with Spraying Systems 8003E flat-fan nozzles delivering 1.5 gal/1000 sq ft. All treatments were first applied on 12 May, a few days after dollar spot was observed, and remaining applications were made thereafter according to the schedules indicated in the tables (final application on 5 Aug). The 3-wk treatments scheduled for the 14 Jul (Eagle + Daconil Ultrex tank mix, and Emerald) were missed due to rain and sprayed one week later making it a 4-wk interval. Visual counting of dollar spot infection centers was obtained weekly. The level of infestation by Poa annua was visually estimated on 24 May, when color differences between the two grass species and the presence of Poa annua seed heads facilitated discrimination. The amount of Poa annua per plot averaged 16.4% and did not differ significantly between treatments. Data for dollar spot were transformed (log10) and analyzed using ANOVA and Waller-Duncan k-ratio t-test, (k=100). Although statistics provided are based on analysis of log10 transformed data, arithmetic means are presented in order to provide a better indication of the level of disease control provided by each treatment as well as the overall disease pressure in the trial. Weather was moderately favorable for dollar spot activity during the test period with weeks of cool and warm temperatures alternating, and disease pressure was low throughout the test. Most treatments provided acceptable control of dollar spot for most of the duration of the test, with the exception of the treatments with thiophanate-methyl alone, indicating the likely presence of isolates resistant to thiophanate-methyl. When the environment became unfavorable for dollar spot, we observed that all plots treated with thiophanatemethyl alone were still visibly affected by dollar spot on 25 Jul and 4 Aug, even though almost no symptoms were present in control plots on that same date. No phytotoxicity or growth regulator effects were noted."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Vincelli, P., E. Dixon, D. Williams, and P. Burrus. 2006. Efficacy of fungicides for control of dollar spot of creeping bentgrass on a sand-based green, 2005. F&N Tests. 61:p. T019.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=124062
If there are problems with this record, send us feedback about record 124062.
Choices for finding the above item:
Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2006/T019.pdf
    Last checked: 11/14/2016
    Requires: PDF Reader
Find Item @ MSU
MSU catalog number: SB 951.3 .F82
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)