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| Web URL(s): | http://plantscience.psu.edu/research/centers/turf/research/annual-reports/2005/cook1.pdf
Last checked: 10/01/2014
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Cook, Joshua;
Landschoot, Peter;
Schlossberg, Maxim |
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| 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 |
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| Title: | Evaluation of phosphonate fungicides for control of Anthracnose basal rot and putting green quality |
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| Section: | Fungicide evaluations
Other records with the "Fungicide evaluations" Section
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| Source: | 2005 Annual Research Report [Penn State]. 2005, p. 1-14. |
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| Publishing Information: | [University Park, PA]: Center for Turfgrass Science, The Pennsylvania State University, in Cooperation with the Pennsylvania Turfgrass Council |
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| # of Pages: | 14 |
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| Keywords: | TIC Keywords: Trichlorfon; Fungicides; Anthracnose basal rot; Golf greens; Phosphonates; Fungicide trials; Disease control; Turfgrass quality; Phosphite salts; Fosetyl Al; Vinclozolin; Application rates; Disease severity; Poa annua; Agrostis stolonifera
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| Abstract/Contents: | Presents a study conducted "to determine if active ingredient (potassium phosphite or fosetyl Al) and the formulation of various phosphonate fungicides (Alude, Aliette, and Chipco Signature) provide similar control of anthracnose basal rot and influence the quality of a mixed annual bluegrass (Poa annua L.)/creeping bentgrass (Agrostis stolonifera L.) putting green when applied at equivalent rates of phosphorous acid (the active compound for controlling diseases)." Details methods and materials used in the study, stating that "this study was conducted on a research putting green...during 2004 and 2005. The putting green soil is a uniform sandy loam with a pH of 7.2, 138 lb [pounds] Mehlich-3 P/A (69 ppm [parts per million] Mehlich-3 P), 0.07 meq K/100 g [grams] soil (28 ppm K), and a CEC [cation exchange capacity] of 6.2 meq/100 g soil...All phosphonate treatments (funcides and the reagent-grade phosphorous acid/potassium hydroxide treatment) in 2004 and 2005 were applied at equivalent amounts of phosphorous acid, based on phosphorous acid equivalents listed on the Alude label and according to the chemical formula and amount of fosetyl Al listen on the Aliette and Chipco Signature labels. The rate of phosphorous acid used in this study was based on the phosphorous acid equivalent of an intermediate product rate (5.7 oz [ounces]/1000 ft2 [per square foot]) listed on the Chipco Signature label for anthracnose diseases, and for summer stress complex on the Alude label." Reports that in 2004 "anthracnose basal rot symptoms were apparent in mid to late June, but symptoms did not become severe at any time during the summer. The only treatments that showed a noticeable reduction in disease symptoms compared to the untreated and Curalan 50 EG controls on both rating dates were Chipco Signature and Chipco Signature + Curalan 50EG...[In 2005], a severe infestation of anthractnose basal rot occured in early July 2005, and the trial was rated on 5 July. Of the phosphonate treatments with no Curalan 50Eg or 336F added, only Chipco Signature and the reagent-grade phosphorous acid/potassium hydroxide treatments showed a reduction in anthracnose basal rot severity to the untreated control." Also reports that "phosphonate treatments provided better quality than the untreated control on most rating dates...Although some statistically significant differences in turfgrass quailty were noted amont the Aliette, Alude, and the reagent-grade phosphorous acid/potassium hydroxide treatments in both years of the study, numerical values were usually within a single whole unit, indicating that these differences were very subtle." Concludes that "of the phosphonate fungicide treatments included in this test, Chipco Signature generally provided the best control of anthracnose basal rot. The fact that Chicop Signature and Aliette treatments contained in the same amount of active ingrdient (fosetyl Al) indicates that the differences in formulation may account for improved anthracnose control with Chipco Signature...Phosphonate treatments generally produced better turf quality than the untreated control during both years of the test; and Chipco Signature tended to produce better quality than the other phosphonate treatments at certain times during the study...More detailed research may shed light on how phosphonate fungicides improve turf quality, and provide insight into the envrionmental and management conditions under which this may occur." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables
Graphs |
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| 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 Anthracnose basal rot and putting green quality. Annu. Res. Rep. [Penn State]. p. 1-14. |
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| Web URL(s):
http://plantscience.psu.edu/research/centers/turf/research/annual-reports/2005/cook1.pdf
Last checked: 10/01/2014
Requires: PDF Reader |
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MSU catalog number: SB 433 .A568 |
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