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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2013/T008.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Report |
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| Author(s): | Earlywine, D.;
Miller, G. L. |
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| Author Affiliation: | Division of Plant Science, University of Missouri, Columbia, MO |
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| Title: | Evaluation of fungicides for spring dead spot control on bermudagrass, 2011-2012 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 7, 2013, p. T008. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 2 |
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| Related Web URL: | https://www.plantmanagementnetwork.org/pub/trial/PDMR/volume7/abstracts/T008.asp
Last checked: 02/28/2017
Notes: Report Summary |
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| Keywords: | TIC Keywords: Application methods; Cultural methods; Cynodon dactylon; Disease control; Disease severity; Fungicide evaluation; Loam soils; Penthiopyrad; Phytotoxicity; Spring dead spot; Spring green-up; Turfgrass quality
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| Cultivar Names: | Riviera |
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| Trade Names: | Velista |
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| Abstract/Contents: | "Fungicides were evaluated for the control of a natural infestation of spring dead spot at the University of Missouri Turfgrass Research Facility in Columbia, MO on 'Riviera' bermudagrass. The soil was a Mexico silt loam. Mowing was performed two times weekly at a height of 1.0 in. During the trial period, no fertilizer was applied. Plots were 5 ft x 10 ft and arranged in a randomized complete block with four replications. Treatments were applied either once or twice on 22 Sep (A) and 21 Oct (B) in water equivalent to 2.0 gal per 1000 sq ft with a CO2-powered sprayer at 28 psi using TeeJet 8008 nozzles. Fungicides were watered-in immediately after application with 0.2 in. of irrigation. Disease severity and turfgrass quality were assessed every 14 days from initial symptom development. Disease severity was assessed as estimates of the percent symptomatic area. Turfgrass quality was evaluated using a 1 to 9 scale (9=best, 5=acceptable) based on color, density, and uniformity. Turf yellowing was evaluated on a 0 to 5 scale (0=common dormant bermudagrass color, 5=bright yellow/straw colored dormant bermudagrass). Spring greenup ratings were based on a scale of 0 to 9 (0=complete dormant turfgrass, 9=complete turfgrass greenup). Data were subjected to analysis of variance and means separation by Waller-Duncan k-ratio t-test (k=100). Due to a mild winter and warm temperatures, an early spring greenup on 29 Mar was observed in the trial area. No phytotoxicity following application or delay in spring greenup was observed as a result of fungicide treatment. Spring dead spot was first noted in plots on 29 Mar. On 24 May, plots treated with Rubigan (both rates), Velista (0.7 oz), Velista followed by Banner Maxx, and A9898A (2.6 fl oz) had significantly lower spring dead spot severity and higher turf quality than the untreated control. By 21 Jun, all treated plots had significantly less spring dead spot than the untreated control, except Velista followed by Heritage, A9898A (0.65 fl oz) (A), and A9898A (1.3 fl oz) (AB). A multi-year approach may be necessary for controlling spring dead spot at this site." |
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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):
Earlywine, D., and G. L. Miller. 2013. Evaluation of fungicides for spring dead spot control on bermudagrass, 2011-2012. PDMR: Plant Dis. Manage. Rep. 7:p. T008. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2013/T008.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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