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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2007/T022.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Giesler, L. J.;
Gustafson, T. C.;
Wit, L. A. |
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| Author Affiliation: | Giesler and Gustafson: Department of Plant Pathology; Wit: Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, Nebraska |
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| Title: | Evaluation of fungicides for control of brown patch in lawn height turf, 2006 |
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| Source: | PDMR: Plant Disease Management Reports. Vol. 1, 2007, p. T022. |
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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: Fungus control; Fungicides; Fungicide trials; Brown patch; Lolium perenne; Disease severity; Fungicide evaluation; Lawn turf
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| Abstract/Contents: | "Plots were located on a blend of perennial ryegrasses at the John Seaton Anderson Turf and Ornamental Research Facility at the University of Nebraska Agricultural Research and Development Center near Mead, NE. Plots were maintained at a height of 3-in. and irrigated to maintain 100% ETp. Irrigation was applied in 15 min on/off intervals between 21:00 h and 02:00 h to promote disease development. Preemergent weed control was performed with Pendulum applied on 24 Mar and 16 May (0.55 oz a.i./1000 ft2). Additional weed control was performed with Trimec (1.28 fl oz/1000 ft2) applied on 19 Jun and Drive (0.4 lb a.i./1000 ft2) applied on 26 Jun. Merit (0.14 oz a.i./1000 ft2) was applied on 23 Jun as a preventive treatment for insect control. Fungicide treatments were applied to 25 ft2 plots using a CO2-pressurized (30 psi) backpack sprayer with Teejet XR8002 flat fan nozzles and treatments were started on 22 Jun. The last application date was 24 Aug. The spray system delivered 5 gal of spray solution per 1000 ft2. Each treatment was replicated four times in a randomized complete block design. The plot area was maintained with a high fertility program to favor disease development and 1 lb. and 2 lb. N / 1000 ft2 (46-0-0) was applied on 19 May and 19 Jun, respectively. The study area was inoculated with R. Solani colonized fescue seed (proprietary inoculum provided by M. Boosalis, University of Nebraska) on 12 Jul. The study was designed to test both preventive and curative treatment strategies with all products being applied prior to pathogen inoculation unless listed as curative in the treatment list. The three curative treatments were applied on 13 Jul and 10 Aug. Temperatures were above normal for much of the trial period, with an average near 90° F and many days reaching 100° F. Cooler temperatures during the wk of 10 Aug slowed disease development and the rest of the season remained cool. Weather conditions were favorable for disease development after inoculation resulting in high disease severity four wks after inoculation. All products reduced disease development with the exception of Nativo and the liquid N treatments. Preventive treatments of 0.9 oz Insignia with or without liquid N and 0.9 oz Insignia alone on 14-day treatment interval did not differ in disease control. No phytotoxicity was observed with any of the treatments." |
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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!
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Giesler, L. J., T. C. Gustafson, and L. A. Wit. 2007. Evaluation of fungicides for control of brown patch in lawn height turf, 2006. PDMR: Plant Dis. Manage. Rep. 1:p. T022. |
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Last checked: 11/14/2016
Requires: PDF Reader |
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