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| Publication Type:
| Report |
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| Author(s): | Grogan, J. E.;
Scott, D. H. |
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| Author Affiliation: | Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana 47907-1155 |
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| Title: | Evaluation of fungicides for control of dollar spot in creeping bentgrass, 1994 |
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| Section: | Turf Grass Reports
Other records with the "Turf Grass Reports" Section
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| Source: | Fungicide and Nematicide Tests. Vol. 50, 1995, p. 332. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Fungicides; Disease control; Dollar spot; Agrostis stolonifera; Phytotoxicity
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| Abstract/Contents: | "Fungicide treatments were evaluated at the experimental green, Agronomy Research Center, Purdue University, West Lafayette, IN. The turf area received conventional golf course care and was maintained at height of 0.25 in. The test area was fertilized with 2 lb N/1000 ft² per year. Soil was Chalmers silt loam with a pH of 7.1 and 4.7% OM. Treatments were applied to 3.3 x6.6 ft plots arranged in a randomized complete block design with 3 replications. Treatments were applied with a hand held CO₂-pressurized sprayer with two 11003 LP flat fan nozzles at 22psi and at a rate of 2 gal/1000 sq ft. All treatments were first applied on 2 Jun with additional treatments based on 7, 14, 21, 28 and 42 day spray intervals. Treatment applications were discontinued after 28 Jul. Disease ratings were made on 21 and 28 Jul, and 5 and 19 Aug by recording the number of infection centers in each plot. Temperatures were above normal during periods of mid Jun and early Jul. Temperatures were cooler than normal in mid May, mid and late Jul, and early and late Aug. Rainfall was above normal from mid Jun to early Jul. Dollar spot disease development was first observed on 21 Jul, which was about six weeks later than normal. Disease severity remained low until mid-Aug and then increased to moderately high levels. Twenty-nine of 34 treatments were effective in the control of dollar spot, allowing only a very low incidence of infection centers throughout the testing period. Prostar 50WP did not control dollar spot. The 2 oz rate had more dollar spot infection centers than the 1 oz rate and the control. It is possible that antagonists to the dollar spot fungus were inhibited by Prostar, which permitted the high level of dollar spot development at the 2oz rate. No phytotoxicity was observed." |
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| Language: | English |
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| References: | 0 |
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| Note: | Report #324
Table |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Grogan, J. E., and D. H. Scott. 1995. Evaluation of fungicides for control of dollar spot in creeping bentgrass, 1994. Fungicide Nematicide Tests. 50:p. 332. |
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