Full TGIF Record # 333588
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Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/154144
    Last checked: 12/08/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Sledge, Brenden
Author Affiliation:Presenting Author and Entomology and Plant Pathology, North Carolina State University, Raleigh, NC
Title:Evaluating chemical control timing for optimum large patch control in multiple warm season turfgrass species
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Turf pest management poster: Diseases, insects, weeds I (includes student competition)
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C05 turfgrass science
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Meeting Info.:St. Louis, Missouri: October 29-November 1, 2023
Source:ASA, CSSA, SSSA International Annual Meeting. 2023, p. 154144.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Large patch in warm-season grasses is becoming more prevalent due to climate change and is major disease in the transition zone. Large patch is caused by the fungus Rhizoctonia solani AG 2-2 IV. Modern fungicides are highly effective at suppressing large patch, yet their effectiveness is dependent on accurate timing of initial applications. With changing climates and the lack of recent research into large patch, these studies are becoming more important. The current research aims to study the relationship between fungicide application timing, fungus-host interaction, and the development of large patch in warm-season grasses. Multiple trials were conducted in Raleigh, NC at the Lake Wheeler research fields. Azoxystrobin (Heritage®) and flutolanil (PedigreeTM) were applied to 'Zeon' zoysiagrass (Zoysia matrella) and 'Raleigh' St. Augustinegrass (Stenotaphrum secundatum) when soil temperatures reached 26.7, 23.9, 21.1, and 18.3°C respectively in the fall and spring applications were applied at 12.8, 15.6, 18.3, 21.1°C. After the initial applications, follow-up applications were made 28 days later. Spring applications regardless of timing did not influence large patch development in this study. Large patch developed on St. Augustinegrass earlier than in zoysiagrass in the fall however, fungicides applied when soil temperatures were between 26.7 and 23.9°C adequately suppressed large patch in both turfgrass species. Preliminary results demonstrate that applications for zoysiagrass and St. Augustinegrass should occur when soil temperatures are between 26.7°C and 23.9°C for the optimum large patch suppression."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sledge, B. 2023. Evaluating chemical control timing for optimum large patch control in multiple warm season turfgrass species. Agron. Abr. p. 154144.
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    Last checked: 12/08/2023
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