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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: | Watkins, Dept. of Plant Pathology University of Nebraska; Wit, Dept. of Horticulture, University of Nebraska, Lincoln, Nebraska |
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| Title: | Fungicides evaluated for control of brown patch, 1990 |
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| Source: | Fungicide and Nematicide Tests. Vol. 46, 1991, p. 330. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| Keywords: | TIC Keywords: Lolium perenne; Brown patch; Rhizoctonia solani; Fungicides; Fungicide evaluation; Diseases; Disease control; Propiconazole; Chlorothalonil; Triadimefon; Penconazole
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| Abstract/Contents: | "Fifteen fungicide treatments were evaluated for control of brown patch on a Manhattan ryegrass turf. The plot area was inoculated 25 Jun 90 with R. solani grown on sterilized oat seed. Approximately 10 lb of inoculum was applied 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 the previous Oct. Plots were fertilized with 1 lb of 46-0-0 in May, Jun, and Jul. Fungicides were applied 26 Jun, 10 Jul, and 31 Jul using a CO2 pressurized (25 psi) backpack sprayer with a flat fan nozzle. Five gal of spray solution were applied per plot. Treatments were arranged in a randomized complete block design with 4 replications. The plots are irrigated nightly receiving approximately 1.5 in per wk. Rainfall was normal from May through Aug. Temperatures were slightly below normal for Jul and Aug with intermittent periods of hot weather. Temperatures the lst week of Aug and the first week of Sep were in the mid to high 90 degrees F range. Brown patch prevalence was moderate during Jun, Jul, and Aug, then became severe in early Sep. Ten treatments showed significantly less brown patch than the untreated check. The three SN 84364 treatments showed significantly less brown patch than the untreated check. The three SN84364 70WDG formulations and the three LYNX formulations held brown patch prevalence to less than 50%. SN84364 70WDG (NA249) gave significantly better control than the other two SN84364 formulations. There was no significant difference between the three LYNX formulations." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract, with table, only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watkins, J. E., and L. A. Wit. 1991. Fungicides evaluated for control of brown patch, 1990. Fungicide Nematicide Tests. 46:p. 330. |
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