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| Publication Type:
| Report |
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| Author(s): | Rossi, Frank;
Meyer, Julie |
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| Author Affiliation: | Departments of Horticulture and Plant Pathology, University of Wisconsin |
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| Title: | Cultivar and seeding rate effects on stand population, leaf texture, annual bluegrass invasion and disease incidence of creeping bentgrass |
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| Source: | Wisconsin Turf Research: Results of 1994 Studies. Vol. 12, 1994, p. 27-30. |
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| Publishing Information: | Madison: University of Wisconsin, in cooperation with the Wisconsin Turfgrass Association. |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Seeding rate; Variety trials; Dollar spot; Pathogens; Fungicide application; Cultivar evaluation; Quality evaluation; Disease evaluation
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| Abstract/Contents: | "The 1993 plots established at Greenwood Hill Country Club in Wausau, are not exhibiting any differences in quality and disease incidence relative to seeding rate. The 1993 plots seeded at Noer Facility exhibited symptoms typical of dollar spot, caused by the fungi Moellerodiscus and Lanzia spp. appeared from natural inoculum in early June, 1994. Both the variety of bentgrass and seeding rate affected the amount of dollar spot observed. Severity of dollar spot was significant higher in all varieties except Putter when seed at 4 lb/1000 sq ft compared to 2 lb, 1 lb or 0.5 lb/1000 sq ft. In some cultivars, dollar spot severity was significantly lower when planted at 0.5 lb/1000 sq ft than at higher seeding densities (Penneagle, Providence, SR 1020, Syn 4, Syn Blend). Significantly higher numbers of dollar spot infection sites were observed on cultivars SR 1020, Dominant, Syn 3, and Syn Blend compared to the other cultivars at all seeding rates. Penneagle, Pennlinks and Providence had the lowest number of dollar spot infection sites at all seeding densities. Results from the early establishment phase in 1993, of these same plots, demonstrated a severe influence of seeding rate on damping off type pathogens (Pythiium and Rhizoctonia spp.). The 1994 seeded plots included a fungicide treated seed variable to determine if this would influence germination characteristics, leaf texture, disease incidence during establishment and long-term health of the stands. The same trends observed relative to optimum seeding rates in 1993 were observed in 1994. More upright cultivars, Putter and Pennlinks benefited from seeding rates up to 2#/M relative to visual cover. However, unlike 1993, disease promoting conditions were not present. Following initial seeding, a cool period dominated the weather patterns resulting in no disease appearent in the study. The fungicide treated seed improved the percent germination at the higher seeding rates compared to untreated seed. This suggests a reduced seeding mortality rate, that may limit initial establishment of higher seeding rates with untreated seed. Additionally, as expected, leaf texture ratings were substantially reduced as seeding rate increased, however, the cultivar effect is also significant at lower seeding rates." |
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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):
Rossi, F., and J. Meyer. 1994. Cultivar and seeding rate effects on stand population, leaf texture, annual bluegrass invasion and disease incidence of creeping bentgrass. Wis. Turfgrass Res. Rep. 12:p. 27-30. |
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MSU catalog number: SB 433 .W57 |
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