Full TGIF Record # 324987
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/142170
    Last checked: 01/30/2023
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Powlen, Jada; Bigelow, Cale; Kerns, James P.; Fidanza, Michael
Author Affiliation:Powlen: Presenting Author and Purdue University; Bigelow: Purdue University; Kerns: North Carolina State University; Fidanza: Pennsylvania State University
Title:Tall fescue cultivar brown patch severity as influenced by summer nitrogen rates
Section:Turfgrass pest management oral II (includes student competition)
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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. 142170.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Turf-type tall fescue (Schedonorus arundinaceus Schreb.: TF) is becoming a predominant lawn species throughout the cool-humid regions. Although there are many benefits to TF, brown patch (Rhizoctonia spp.) can severely damage the turf during the summer months. Establishing TF cultivars with increased brown patch resistance and minimal nitrogen (N) fertilization practices are hypothesized to help turfgrass managers minimize fungicide use and reduce pest damage. A two-year field study was conducted in West Lafayette, IN to determine the influence of spring and summer applied N at two rates among various TF cultivars and a TF blend. Five cultivars ('Kingdom', 'Olympus', 'Inspiration', 'Raptor III', and 'GLX STAR') and a TF blend were seeded in September 2020. Monthly applications of urea were applied at two rates (73.5 and 245.0 kg N ha-1 year-1) between April and July. All plots were inoculated with a locally sourced R. solani isolate at the end of May. Visual ratings for seasonal appearance/turf quality (1-9=best scale), percentage leaf blight (0-100%), and area under the disease progress curve (AUDPC) was calculated. Prior to brown patch symptoms, turf receiving higher N rates increased visual quality. However, N rate did not influence brown patch severity among these cultivars in either year. While none of the TF cultivars evaluated had complete brown patch resistance, differences in brown patch were observed. Maximum brown patch blight of 13 and 46% were measured for the TF blend and Kingdom, respectively. Additionally, the TF blend had a 74% reduction in AUDPC compared to Kingdom across study years. This study demonstrates that summer N applications do not need to be avoided to reduce brown patch and emphasizes the importance of host resistance for TF cultivar selection."
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Powlen, J., C. Bigelow, J. P. Kerns, and M. Fidanza. 2022. Tall fescue cultivar brown patch severity as influenced by summer nitrogen rates. Agron. Abr. p. 142170.
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    Last checked: 01/30/2023
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