Full TGIF Record # 324923
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/143913
    Last checked: 01/24/2023
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Stover, Cole; Mattox, Clint; Kowalewski, Alexander R.; McDonald, Brian W.; Braithwaite, Emily T.; Schmid, Charles J.
Author Affiliation:Stover: Presenting Author and Oregon State University; Mattox, McDonald, Braithwaite and Schmid: Oregeon State University; Kowalewski: Oregon State University-Horticulture
Title:Nitrogen sources on the suppression of microdochium patch
Section:Turfgrass science poster
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C05 turfgrass science
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Meeting Info.:Baltimore, Maryland: November 6-9, 2022
Source:ASA, CSSA, SSSA International Annual Meeting. 2022, p. 143913.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Fungicides can be used to manage Microdochium patch (Microdochium nivale), a disease that damages annual bluegrass (Poa annua L.) during cool and humid conditions in the Pacific Northwest. However, recent concerns associated with pesticide use have led to the exploration of alternatives. Past research has determined that frequent winter applications of sulfur containing products reduce activity of this disease. A component not yet evaluated is the effects of fall and winter nitrogen sources on Microdochium patch severity, particularly products containing sulfur. This study aims to identify if there is a difference in Microdochium patch severity when using various sources and rates of fall and winter applied nitrogen. This trial was conducted at the Lewis Brown Research Farm in Corvallis, OR on an annual bluegrass putting green. Experimental design was a six by two factorial design with 4 replications. Factors included nitrogen source [urea (46-0-0), calcium nitrate (15.5-0-0 + 19% Ca), ammonium sulfate (20-0-0 + 24% S), potassium nitrate (13-0-46), ammonium thiosulfate (12-0-0 + 26% SS], and nitrogen rate (4.88 kg N ha-1 and 9.76 kg N ha-1) applied monthly from October 1, 2021, to March 30, 2022. No traditional fungicides were applied during this period. Percent disease was assessed every two weeks. Preliminary results suggested a reduction in percent disease when a nitrogen source containing sulfur was used. These results could give turfgrass managers another tool for mitigating the damage from Microdochium patch. Future work could also incorporate fungicide alternatives with nitrogen sources that contain sulfur."
See Also:Updated version appears in ASA, CSSA, SSSA International Annual Meeting 2023, 2023, p. 150600, with variant title "The effects of nitrogen source on microdochium patch severity in the PNW", R=333388. R=333388
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Stover, C., C. Mattox, A. R. Kowalewski, B. W. McDonald, E. T. Braithwaite, and C. J. Schmid. 2022. Nitrogen sources on the suppression of microdochium patch. Agron. Abr. p. 143913.
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    Last checked: 01/24/2023
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