Full TGIF Record # 63882
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Settle, D.; Fry, J.; Tisserat, N.
Author Affiliation:Kansas State University
Title:Brown patch severity in perennial ryegrass as affected by irrigation frequency, dew, and nitrogen level
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Meeting Info.:Salt Lake City, UT: October 31 - November 4, 1999
Source:1999 Annual Meeting Abstracts [ASA/CSSA/SSSA]. Vol. 91, 1999, p. 140.
Publishing Information:[Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
# of Pages:1
Keywords:TIC Keywords: Brown patch; Disease severity; Golf courses; Golf fairways; Lolium perenne; Irrigation frequency; Dew; Nitrogen fertilization; Nitrogen; Rhizoctonia solani; Comparisons; Fertilization rates; Disease control
Abstract/Contents:"Brown patch caused by Rhizoctonia solani is a recurring problem on perennial ryegrass golf course fairways in the Midwest. In this test, ryegrass maintained under fairway conditions was watered daily or three days weekly; poled daily to remove dew, or not poled; and fertilized with N at 98 to 396 kg ha⁻¹ yr⁻¹. Irrigation frequency did not affect visible brown patch injury, but less browning was present in daily irrigated turf when evaluated using quantified colorific images. Poling reduced brown patch injury by up to 10%. Brown patch increased with increasing N level. An analogous growth chamber test demonstrated that hourly watering during an 18-hour infection period reduced number of infected leaves by 80% compared to nonirrigated turf. Frequent irrigation seems to suppress brown patch by influencing dew accumulation and/or disturbing fungal mycelium during the infection process."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Settle, D., J. Fry, and N. Tisserat. 1999. Brown patch severity in perennial ryegrass as affected by irrigation frequency, dew, and nitrogen level. Annu. Meet. Abstr. 91:p. 140.
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