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| Publication Type:
| Report |
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| Author(s): | Watkins, J. E.;
Wit, L. A. |
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| Author Affiliation: | Department of Plant Pathology, Department of Horticulture, University of Nebraska, Lincoln, NE |
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| Title: | Evaluation of fungicides for control of brown patch, 1997 |
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| Source: | Fungicide and Nematicide Tests. Vol. 53, 1998, p. 466. |
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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: Lolium perenne; Rhizoctonia solani; Fungicides; Disease control; Myclobutanil; Azoxystrobin; Flutolanil; Penconazole; Chlorothalonil; Tank mix; Triadimefon; Experimental products; Application rates; Cyproconazole; Formulations; Iprodione; Fosetyl Al
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| Abstract/Contents: | "Evaluation of fungicides for control of brown patch, 1997: 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 mowed three times weekly at a height of 0.62 in and maintained at 80% ETp. Preemergence weed control was with Tuperrsan at 8 lb/acre applied 7 May 97. Urea (46-0-0) was applied 26 Jun 97 at 1 lb N/1000 sq ft. the experimental area was inoculated in late Jun and again in late Jul with Rhizoctonia solani cultured on sterilized tall fescue seed. After inoculation the area was covered with Seed Guard (A.M. Leonard, Inc., Piqua, OH) for 48 hr to encourage disease development. Seed Guard is a white spun-bound polypropylene material used in turfgrass establishment to increase seed germination. Fungicide treatments were applied using a CO₂ pressureized (25 psi) backpack sprayer with a flat fan nozzle to 25 sq ft plots. The sprayer was calibrated to deliver 5 gal spray solution per 1000 sq ft. Four replications per treatment were arranged in a randomized complete block design. Precipitation was below normal Apr through Sep, and temperatures were above normal Jun through Sep with intermittent cool periods in Jul and Aug. Disease severity was moderate and reached its peak the third week of Jul. By the time the last fungicide treatments were applied on 21 Aug, brown patch was not active on the plots. Both Heritage 50WG treatments, Lynx 25DF+Daconil 2787 4F, Bayleton 25DF+Daconil 2787 4F, and Bayleton 25DF+Heritage 50WG held disease injury to less than 20%. Heritage 50WG applied on a 28-day schedule was effective as when applied every 14 days. Turf quality was moderate to moderately high for all treatments except CGA-BMP 46.5WP applied every 7 days. The CGA-BMP treatments caused moderate stunting and bronzing of the turf." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watkins, J. E., and L. A. Wit. 1998. Evaluation of fungicides for control of brown patch, 1997. Fungicide Nematicide Tests. 53:p. 466. |
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