Full TGIF Record # 74420
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Hill, W. J.; Heckman, J. R.; Clarke, B. B.; Murphy, J. A.
Author Affiliation:Plant Science Department, Rutgers, New Brunswick, NJ
Title:Influence of liming and nitrogen in the severity of summer patch of Kentucky bluegrass
Section:Soil biology and chemistry
Other records with the "Soil biology and chemistry" Section
Meeting Info.:Toronto, Ontario, Canada: July 2001
Source:International Turfgrass Society Research Journal. Vol. 9, No. Part 1, 2001, p. 388-393.
Publishing Information:Oakville, Ontario, Canada: International Turfgrass Society
# of Pages:6
Keywords:TIC Keywords: Acidic soils; Liming; Nitrogen; Summer patch; Disease severity; Poa pratensis; Soil pH; Application rates; Ammonium sulfate; Sulfur fertilizers; Calcium fertilizers; Magnaporthe poae; Disease control
Cultivar Names:Georgetown
Abstract/Contents:"Although the application of acidifying fertilizers can reduce the severity of summer patch disease, this benefit must be balanced against the need to maintain a satisfactory soil pH level for plant growth. This field study was conducted from 1995 to 1998 to evaluate the application of lime (99, 198, and 396 kg CCE ha-1) in combination with acidifying fertilizer ammonium sulfate (196 kg N ha-1 season) and the alkalinizing fertilizer calcium nitrate (196 kg N ha-1 season) on the severity of summer patch, caused by Magnaporthe poae Landschoot and Jackson in 'Georgetown' Kentucky bluegrass (Poa pratensis L.) grown on a Freehold sandy loam (fine-loamy, mixed, mesic Typic Hapludult). The two fertilizers were applied alone and in combination with lime or elemental sulfur (845 kg S ha-1). On some rating dates, disease severity was greater on turf that received calcium nitrate versus ammonium sulfate. Compared to calcium nitrate alone, calcium nitrate plus lime (396 kg CCE ha-1) enhanced symptom expression, while the addition of sulfur to calcium nitrate reduced sympton expression in 1998. Although turf treated with ammonium sulfate plus sulfur sustained low levels of summer patch in 1998, the combination also resulted in extremely poor turf quality. Compared to ammonium sulfate alone, the application of ammonium sulfate with lime raised soil pH but did not increase disease severity. Thus, lime may be applied along with ammonium sulfate, to maintain acceptable soil pH levels and turf quality, without reducing in the effectiveness of ammonium sulfate for the control of summer patch disease in Kentucky bluegrass."
Language:English
References:12
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hill, W. J., J. R. Heckman, B. B. Clarke, and J. A. Murphy. 2001. Influence of liming and nitrogen in the severity of summer patch of Kentucky bluegrass. Int. Turfgrass Soc. Res. J. 9(Part 1):p. 388-393.
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