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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 pythium blight, 1997 |
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| Source: | Fungicide and Nematicide Tests. Vol. 53, 1998, p. 467. |
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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; Pythium aphanidermatum; Fungicides; Disease control; Propamocarb; Application rates; Propiconazole; Experimental products; Tank mix
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| Abstract/Contents: | "Evaluation of fungicides for control of pythium blight, 1997: Five fungicide treatments were applied to plots of a perennial ryegrass blend located at the John Seaton Anderson Turf and Ornamental Research Facility at the University of Nebraska Research and Development Center near Mead, NE. The experimental area was inoculated mid-Jul with P. aphanidermatum cultured on sterilized tall fescue seed and applied with a 4-ft wide Gandy drop spreader calibrated to deliver 3 lb tall fescue inoculum per 1000 sq ft. After inoculation the plot 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 applications were intiated 10 Jul and repeated 31 Jul and 21 Aug. Products were applied with a CO₂-pressurized (25 psi) backpack sprayer with a flat fan nozzle at delivery rate of 5 gal spray solution per 1000 sq ft. Twenty-five sq ft plots were replicated four times in a randomized complete block design. Plots were mowed three times per week at a height of 0.62 in and maintained at 80% ETp. Eight lb/acre of Tupersan were applied for preemergence weed control along with 1 lb P/1000 sq ft on 7 May. Urea (46-0-0) was applied 26 Jun at 1 lb N/1000 sq ft. Precipitation was below normal Apr through Sep, and temperatures were above normal Jun through Sep with intermittent cool periods in Jul and Aug. Pythium blight was moderately severe during the latter half of Jul but was not active during Aug. Although the initial treatments of 10 Jul were applied prior to inoculation and the onset of symptoms, Banol 6EC, 2 fl oz+ICIA 5504 50EG, 0.2 oz and Heritage 50WG, 0.4 oz were the only effective treatments. All other treatments did not differ significantly from the untreated check plot." |
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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 pythium blight, 1997. Fungicide Nematicide Tests. 53:p. 467. |
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MSU catalog number: SB 951.3 .F82 |
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