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| Publication Type:
| Report |
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| Author(s): | Kennedy, B. S.;
Nesmith, W. C.;
Hartman, J. R. |
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| Author Affiliation: | Dept. of Plant Pathology, University of Kentucky |
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| Title: | Timing of banner applications for controlling summer patch/necrotic ring spot on Kentucky bluegrass, 1989 |
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| Source: | Fungicide and Nematicide Tests. Vol. 45, 1990, p. 277. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| Keywords: | TIC Keywords: Poa pratensis; Summer patch; Ophiosphaerella korrae; Necrotic ring spot; Application timing; Propiconazole
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| Abstract/Contents: | "In an attempt to determine the proper time of application to control summer patch and necrotic ring spot, single fungicide treatments with Banner 1.1E made in different months were evaluated on a Kentucky bluegrass fairway at the Griffin Gate Golf Course, Lexington, KY. This is a preliminary report and will be continued to include 18 treatments. The turfgrass was maintained at a 0.75 in. mowing height (gradually lowered to 0.5 in. during Aug), received 2.0 lb of nitrogen annually, was irrigated as needed and otherwise received conventional fairway maintenance. Each treatment was replicated four times in a randomized complete block design with 10 ft x 15 ft plots. Treatments were applied mid-month (within 10 days of the 15th) using a CO2 sprayer with a 5 ft four nozzle boom delivering 3 gal/1000 ft2 and operating at 25 psi. Treatments were watered in with a hand held sprinkling can equivalent to 0.03 in. of irrigation. Plots were evaluated 13 Sep by counting the number of infection centers. Summer patch and necrotic ring spot were evaluated as one and have been detected in this fairway in previous years. Preliminary findings indicated that summer patch is the dominant disease at this site. Patch disease symptons first appeared near the end of Aug and became most severe when the turf was lowered to 0.5 in. When regular growing height was resumed in Oct, the turf recovered. The long-term damage from these diseases was relatively low when compared to previous years, even though numbers of infection centers were high. All treatments were significantly different from the control plot with the exception of the May application. Large amounts of rainfall on the day of application or one day post application may have had an impact on the Jun, Jul and Aug treatments." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Other items relating to: SUMPAT |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kennedy, B. S., W. C. Nesmith, and J. R. Hartman. 1990. Timing of banner applications for controlling summer patch/necrotic ring spot on Kentucky bluegrass, 1989. Fungicide Nematicide Tests. 45:p. 277. |
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