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| Publication Type:
| Report |
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| Author(s): | Tisserat, N. A. |
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| Author Affiliation: | Department of Plant Pathology, Kansas State University, Manhattan, KS |
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| Title: | Preventative fall fungicide applications for control of rhzoctonia large patch disease of zoysiagrass, 1997 |
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| Source: | Fungicide and Nematicide Tests. Vol. 53, 1998, p. 472. |
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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: Zoysia japonica; Rhizoctonia solani; Preventive control; Autumn; Application timing; Fungicides; Flutolanil; Propiconazole; Tank mix; Myclobutanil; Triadimefon; Azoxystrobin; Penconazole; Cyproconazole; Iprodione; Mancozeb; Chlorothalonil; Polyoxins
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| Abstract/Contents: | "Preventative fall fungicide applications for control of rhizoctonia large patch disease of zoysiagrass, 1997: Fungicide plots were established of zoysiagrass 'Meyer' fairways at the Highlands and Alvamar Golf Courses in Hutchinson and Lawrence, KS respectively. Turfgrass was mowed at 0.5 inches, irrigated as needed and fertilized with approximately 1.5 lb N/1000 ft² annually. Fungicides were applied 24 Sep in Lawrence and 4 Oct 96 in Hutchinson with a CO₂ backpack sprayer with 8003 TeeJet flat fan nozzles at 30 psi in water equivalent to 2.2 gal (Lawrence) or 4.3 gal (Hutchinson) per 1000 sq ft. Treatment plots were 10 ft X 12 ft and replicated 4 (Lawrence) or 3 (Hutchinson) times in a randomized complete-block design. Plots were not irrigated after fungicide application. The percentage plot area diseased was recorded on 23 and 24 Apr 97 in Lawrence and Hutchinson, respectively, after zoysiagrass resumed spring growth. The fall of 96 was relatively dry, and large patch was not evident at either location before the zoysiagrass went dormant. The winter was also very dry. There was no evidence of active colonization of the turfgrass by the fungus at the time of the spring rating, Suggesting that most turf damage occurred between fall dormancy and resumption of growth in spring. All fungicides reduced severity of large patch at Lawrence but applications of Polyoxorim and Daconil Ultrex were not significantly different from non-treated plots at Hutchinson. Plots treated with Sentinel at both sites appeared to be slower to break winter dormancy and were slightly off-color (lighter green). Results for the past several years indicate that a preventative fungicide treatment in late September is effective in suppressing both fall an early spring symptoms of Rhizoctonia large patch." |
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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):
Tisserat, N. A. 1998. Preventative fall fungicide applications for control of rhzoctonia large patch disease of zoysiagrass, 1997. Fungicide Nematicide Tests. 53:p. 472. |
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