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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2007/T020.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Kaminski, J. E.;
Putman, A. I. |
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| Author Affiliation: | Department of Plant Science, University of Connecticut, Storrs, Connecticut |
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| Title: | Preventive control of dollar spot with BASF, Lesco, and Syngenta fungicides, 2006 |
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| Source: | PDMR: Plant Disease Management Reports. Vol. 1, 2007, p. T020. |
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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: Preventive control; Dollar spot; Fungicides; Fungicide trials; Disease severity; Agrostis stolonifera; Golf fairways
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| Abstract/Contents: | "This study was initiated at the University of Connecticut Plant Science Research and Education Facility located in Storrs, CT. Soil was a loam with a pH of 5.9 and 5.8% OM. Turfgrass used for the fungicide evaluation was a two year old stand of 'Southshore' creeping bentgrass (Agrostis stolonifera). The site was maintained as a bentgrass fairway and mowed four times per week to a height of 0.5-in. All treatments were applied with a CO2 pressurized (35 psi) sprayer equipped with a flat-fan nozzle, and calibrated to deliver 2.5 gal water per 1000 ft2. All treatments were applied on the dates footnoted in the data tables. On 30 Jun, the area was inoculated using sterile Kentucky bluegrass (Poa pratensis) seeds infested with a single isolate of S. homoeocarpa. Plots measured 5 ft x 5 ft, and were arranged in a randomized complete block with four replications. Percent plot area affected by Sclerotinia homoeocarpa was visually rated on a 0 to 100 scale where 0 = entire plot void of dollar spot and 100 = entire plot area covered with dollar spot symptoms. Dollar spot was not present at the initiation of the study and the area was inoculated to encourage the disease. By 14 Jul, percent dollar spot in the untreated control plots reached 1.8%. All treatments that were last applied on 23 Jun (21 days since last treatment; DAT) had dollar spot levels similar to the untreated control on 14 Jul. Dollar spot pressure became severe in early Aug and percent area of untreated control plots affected by dollar spot was 24% when treatments ceased on 4 Aug. Most treatments provided excellent (ā¤ 1.0%) suppression of dollar spot between 4 and 25 Aug. By 25 Aug, only plots receiving two 0.18 oz applications of Emerald (35 DAT) had unacceptable levels of dollar spot (2.0%). When disease pressure increased to 79% in the untreated control plots on 1 Sep, complete control was still be exhibited within plots treated with Emerald (0.18 oz; 28 DAT) and Spectator Ultra + Manicure Ultra (28 DAT). There were no differences, however, among treatments providing complete control and Emerald (0.13 oz; 28 DAT), Spectator Ultra (28 DAT), Manicure Ultra (28 DAT), Daconil (3.2 oz; 28 DAT), Daconil + Banner MAXX (28 DAT), and Banner MAXX (28 DAT) on 1 Sep. On the final rating date, moderate levels of control were observed within plots treated with Emerald (0.18 oz; 35 DAT) and Daconil (1.8 oz; 28 DAT)." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is as abstract and tables only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kaminski, J. E., and A. I. Putman. 2007. Preventive control of dollar spot with BASF, Lesco, and Syngenta fungicides, 2006. PDMR: Plant Dis. Manage. Rep. 1:p. T020. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2007/T020.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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