Full TGIF Record # 29305
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Web URL(s):https://listings.lib.msu.edu/iowat/1991.pdf#page=54
    Last checked: 01/10/2017
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Publication Type:
i
Report
Author(s):Gleason, M. L.
Author Affiliation:Assistant Professor, Extension Plant Pathologist, Plant Pathology Department, Iowa State University
Title:Evaluation of fungicides for control of dollar spot on Emerald bentgrass--1990
Source:1991 Iowa Turfgrass Research Report. July 1991, p. 49-50.
Publishing Information:Ames, Iowa: Iowa State University
Keywords:TIC Keywords: Fungicides; Dollar spot; Agrostis; Fungicide application; Disease evaluation
Abstract/Contents:"Trials were conducted on the Turfgrass Research Plots at the Horticulture Research Station of Iowa State University near Ames, Iowa. Fungicides were applied to 'Emerald' bentgrass maintained at a 5/32-in cutting height with a modified bicycle sprayer at 30 psi and a dilution rate of 5 gal/1000 ft2. The experimental design was a randomized complete-block with three replications. Treated plots were alternated with untreated plots so treated plots did not adjoin each other. All plots measured 4 ft by 5 ft. Fungicides were applied on a 14, 21, or 28-day schedule (Table 24). Applications began on June 5 and continued through July 17. Plots were evaluated for severity of leaf spot symptoms on June 28, July 11, July 27, and August 10. The entire plot was inoculated with rye grains infested with the dollar spot pathogen on May 31, 5 days before fungicide applications were begun. As noted in Table 24, the August 10 rating was taken approximately 3 weeks after the final spraying. On this date, the rating was intended to be a measure of residual activity for 14-day interval treatments, because ratings were made 3 rather than 2 weeks after spraying. Disease ratings for dollar spot were made by counting the number of dollar spot infection centers per plot. Disease began to appear on June 21. Disease pressure was moderate to severe on June 28 and July 11 and very severe on July 27 and August 10. Almost all treatments suppressed dollar spot significantly better than the check (unsprayed) treatment. The only exceptions were Banner at 1 oz, Banner at 0.5 oz plus Plex at 0.37 oz, and Chipco 26019 Flo at 4 oz on June 28. All the curative treatments had significantly fewer dollar spot infection centers per plot than the check on July 13 and July 26. No phtyotoxicity symptoms were noted on any rating dates."
Language:English
References:0
Note:Article appears as abstract
Table
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gleason, M. L. 1991. Evaluation of fungicides for control of dollar spot on Emerald bentgrass--1990. Iowa Turfgrass Res. Rep. p. 49-50.
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https://listings.lib.msu.edu/iowat/1991.pdf#page=54
    Last checked: 01/10/2017
    Requires: PDF Reader
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MSU catalog number: SB 433 .A1 I55
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