Full TGIF Record # 130207
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Web URL(s):http://plantscience.psu.edu/research/centers/turf/research/annual-reports/2005/cook2.pdf
    Last checked: 10/01/2014
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Publication Type:
i
Report
Author(s):Cook, Joshua; Landschoot, Peter; Schlossberg, Maxim
Author Affiliation:Cook: Research Technician; Landschoot: Professor, Turfgrass Science; Schlossberg: Assistant Professor, Turfgrass Nutrition and Soil Fertility, Department of Crop and Soil Sciences, Pennsylvania State University
Title:Evaluation of phosphonate fungicides for control of Pythium blight on creeping bentgrass and perennial ryegrass
Section:Fungicide evaluations
Other records with the "Fungicide evaluations" Section
Source:2005 Annual Research Report [Penn State]. 2005, p. 1-8.
Publishing Information:[University Park, PA]: Center for Turfgrass Science, The Pennsylvania State University, in Cooperation with the Pennsylvania Turfgrass Council
# of Pages:8
Keywords:TIC Keywords: Trichlorfon; Fungicides; Pythium diseases; Phosphonates; Fungicide trials; Disease control; Disease severity; Application rates; Turfgrass quality; Lolium perenne; Agrostis stolonifera; Phosphite salts; Fosetyl Al; Potassium hydroxide; Pythium aphanidermatum; Metalaxyl
Cultivar Names:Integra; Penncross
Abstract/Contents:Presents a study conducted to "determine if active ingredient forumlation of phosphonate fungicides [potassium phosphite (Alude) or fosetyl Al (Aliette and Chipco Signature)] provide similar control of Pythium blight when applied at equivalent rates of phosphorus acid, the active compound for controlling this disease." Details methods and materials used in the study, stating that "the soil at the test site is a Hagerstown silt loam with a pH of 6.8, 150 lb [pounds] Mehlich-3 P/acre (75 ppm [parts per million] Mehlich-3 P), 0.54 meq K/100 g [grams] soil (210 ppm K), and a CEC [cation exchange capacity] of 13.4 meq/100 g soil...Prior to treatment in 2004 and 2005, a 30 ft [foot] by 48 ft chamber constructed of an aluminum frame and covered with clear polyethylene plastic was placed over the test site...An automatic misting system was designed to increase humidity and cool the turf was suspended from the chamber frame. After treatments were applied, the two open ends of the chmaber were sealed with preassembled wooded frames covered with clear polyethylene plastic...Treatments included commerical formulations of three phosphonate fungicides: Alude...Aliette...and Chipco Signature." Reports that in 2004 "analysis of variance of 2004 percent blighting data indicates that the main effects of turf species and fungicide treatment were significant...Disease symptoms (expressed as percent blighting) were more severe on perennial ryegrass than creeping bentgrass and fungicides provided better control of Pythium blight on creeping bentgrass than on perennial ryegrass...All fungicide treatments (including the reagent grade phosphorous acid/potassium hydroxide solution) provided good control (>89%) of phythium blight on creeping bentgrass and perennial ryegrass relative to the untreated control...[In 2005], analysis of variance of 2005 data show that the main effect of turf species was not significant, but the main effect of fungicide treatment was significant...In contrast to 2004, percent blighting in 2005 was similar on both species...All fungicide treatments (including the reagent grade phosphorous acid/potassium hydroxide treatment) provided better control of pythium blight than the bentgrass and prennial ryegrass." Concludes that "results of this study showed that when phosphonate fungicides with different active ingredients and formulations [potassium phosphite] (Alude and the phosphorous acid/potassium hydroxide treatment) and fosetyl Al (Aliette and Chipco Signature)] were applied at the same rate of phosphorous acid, no differences in pythium blight control occurred among these products."
Language:English
References:0
Note:Pictures, color
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Cook, J., P. Landschoot, and M. Schlossberg. 2005. Evaluation of phosphonate fungicides for control of Pythium blight on creeping bentgrass and perennial ryegrass. Annu. Res. Rep. [Penn State]. p. 1-8.
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http://plantscience.psu.edu/research/centers/turf/research/annual-reports/2005/cook2.pdf
    Last checked: 10/01/2014
    Requires: PDF Reader
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