Full TGIF Record # 333546
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Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/152534
    Last checked: 12/07/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Gawron, Katarzyna; Joseph, Mikerly; Petelewicz, Pawel
Author Affiliation:Gawron: Presenting Author and Agronomy, University of Florida, Gainesville, FL; Joseph and Petelewicz: Agronomy, University of Florida, Gainesville, FL
Title:Safety of various recognition-based tank-mixes timings to 'citrablue', 'seville', and 'classic' St. Augustinegrass
Section:Turf pest management poster: diseases, insects, weeds II
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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. 152534.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Recognition is a new formulation of trifloxysulfuron-sodium containing metcamifen safener. This formulation is designed for safe use in St. Augustinegrass (Stenotaphrum secundatum Waltz.) allowing also for safe tank-mixing with fluazifop-P-butyl to selectively control bermudagrass (Cynodon spp.). It is estimated that ~40% of the 4.9 million acres of home lawns in the state of Florida are St. Augustinegrass; therefore, it is considered the predominant species for Florida lawns. Total of 3 studies were conducted at the Plant Science Research and Education Unit in Citra, FL to ensure the safety of Recognition and its tank-mixes with fluazifop-P-butyl to St. Augustinegrass in Florida. Studies were conducted from August to November of 2022 and May to October of 2023. Turf was 'CitraBlue', 'Classic', 'Floratam', 'Palmetto', and 'Seville' St. Augustinegrass maintained as a home lawn. Herbicide treatments were applied once or twice on either 4-wk or 6-wk interval from August 12, 2022 (study 1), June 7, 2023 (study 2), May 5 (study 3, spring sequence) or July 12 (study 3, summer sequence). The herbicides tested were trifloxysulfuron-sodium + metcamifen, fluazifop-P-butyl, and their tank-mixes. Plots were rated weekly for turfgrass injury on a 0-10 scale and percent green cover (0-100%) using digital image analysis. In the first study, tank-mixes of trifloxysulfuron-sodium + metcamifen + fluazifop-P-butyl resulted in significant injury to 'Seville' St. Augustinegrass. In the second study, standalone fluazifop-P-butyl severely injured 'CitraBlue', 'Floratam' and 'Palmetto' turf but all trifloxysulfuron-sodium + metcamifen treatments were no different from nontreated control; thus, considered safe. In the third study, the safety of 'CitraBlue' and 'Classic' turf was unaffected by herbicides or application timing and regime. Applications of trifloxysulfuron-sodium + metcamifen to 'Seville' resulted in slight (i.e., within acceptable thresholds) but significant phytotoxicity regardless of fluazifop-P-butyl addition. Also, treatments applied in summer were significantly more injurious compared to spring applications."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gawron, K., M. Joseph, and P. Petelewicz. 2023. Safety of various recognition-based tank-mixes timings to 'citrablue', 'seville', and 'classic' St. Augustinegrass. Agron. Abr. p. 152534.
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    Last checked: 12/07/2023
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