Full TGIF Record # 30559
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Nelson, E. B.; Craft, C. M.
Author Affiliation:Dept. of Plant Pathology, Cornell University, NY
Title:Suppression of Typhula blight with top-dressings amended with composts and organic fertilizers, 1990-91
Source:Biological and Cultural Tests for Control of Plant. Vol. 7, 1992, p. 107.
Publishing Information:St. Paul, MN: The American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Poa annua; Typhula blight; Typhula incarnata; Suppression; Topdressings; Composts; Organic fertilizers
Abstract/Contents:"Field plots were established in 1990 on an annual bluegrass putting green at the Country Club of Rochester, Rochester, NY to evaluate various composts and organic fertilizers as top-dressing amendments for the suppression of Typhula blight. The putting green was over 60-yr old and constructed from the native alkaline clay loam soil (pH 7.2) in the area. The green contained largely annual bluegrass intermixed with small percentages of bentgrasses and was naturally infested with T. incarnata. No fertilizers were applied prior to the establishment of treatments. As part of the regualr maintenance program, turf was maintained at a 5 mm cutting height. Top-dressing formulations consisted of 70% fine sand and 30% organic component (v:v) and were applied at roughly monthly intervals on 5 Jun, 5 Jul, 14 Aug, 6 Sep and 26 Oct 90 to 0.6 m X 0.6 m plots at the rate of 500 cm3 of top-dressing formulation per m2. Top-dressings were distributed uniformly over the plot area then lightly rubbed-in to distribute the material into the turf canopy. Controls consisted of plots to which no top-dressing was applied. Propiconazole (Banner(R)) was applied as a fungicide standard at the rate of 173 mg a.i./m2. Plots were rated on 18 Apr 91 for Typhula blight severity on a scale of 0 to 10 for which 0 = none of the plot area diseased and 10 = 100% of the plot area diseased. The experiment was established as a completely randomized design with five replicates. Data were analyzed by analysis of variance and means were separated using the Least Significant Difference (LSD) test. Topdressing applications of a mature sludge compost from Endicott, NY, a horse manure compost from Moody Hill Farms and an immature brewery waste compost (AllGrow) from Baldwinsville, NY significantly reduced the severity of Typhula blight as compared with untreated plots. Levels of control among these composts ranged from 54 - 70%. The levels of control provided by the immature sludge compost and the immature AllGrow were significantly better than that of the fungicide, Banner. Results suggested that repeated applications of topdressings amended with certain composts or organic fertilizers may be as effective as fungicides in suppressing Typhula blight."
Language:English
References:0
Note:Table
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Nelson, E. B., and C. M. Craft. 1992. Suppression of Typhula blight with top-dressings amended with composts and organic fertilizers, 1990-91. Biol. Cult. Tests Control Plant Dis. 7:p. 107.
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