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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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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 |
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| Title: | Effect of nitrogen level and cutting height on brown patch severity, 1992 |
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| Source: | Biological and Cultural Tests for Control of Plant. Vol. 8, 1993, p. 124. |
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| Publishing Information: | St. Paul, MN: The American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Festuca arundinacea; Brown patch; Rhizoctonia solani; Nitrogen fertilizers; Mowing height
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| Abstract/Contents: | "Treatments were applied to a 'Rebel' tall fescue turf established in May 1987 at the University of Nebraska John Seaton Anderson Turfgrass Research Facility, Mead, NE. The plot area was inoculated late May with R. solani cultured on sterilized oat seed. The inoculum was applied with a 4-ft Gandy drop spreader calibrated to deliver 10 lb of oat inoculum per 1000 sq ft. Preemergent weed control was DCPA applied in early May and postemergent weed control was 2,4-D, MCPP, and dicamba applied in Mid-Oct 1991. Nitrogen treatments of 0, 1/3, 2/3, 1 and 1 1/2 lb actual N per 1000 sq ft were applied 5 May, 16 Jun, 7 Jul, 5 Aug, 11 Sep, 8 Oct. This gave seasonal N rates of 0, 2, 4, 6, and 8 lb/1000 sq ft. Liquid urea (46-0-0) was used as the fertilizer. Plots were mowed twice weekly at 1 or 2.5 in. Irrigation was applied nightly at 1.5 in per week during the growing season. The experimental design was a split-plot with nitrogen levels as the main plots and cutting ht as subplots. Each treatment was replicated four times. Precipitation was above normal from Apr through Sep. Temperatures generally were lower than normal with intermittent periods of warm, humid weather. Brown patch developed rapidly during the growing season and stabilized at moderately severe levels by early Aug. At the 1 in cutting ht, the level of N applied had very little effect on brown patch severity. However, at 2.5 in there was a notable increase in brown patch severity with increasing N level. Brown patch was light to moderate 0 and 2 lb N and became moderately severe at 4, 6 and 8 lb N. The most severe brown patch was at the 8 lb N level." |
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| Language: | English |
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| References: | 0 |
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| Note: | Table
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watkins, J. E., and L. A. Wit. 1993. Effect of nitrogen level and cutting height on brown patch severity, 1992. Biol. Cult. Tests Control Plant Dis. 8:p. 124. |
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