Full TGIF Record # 333459
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Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/150751
    Last checked: 12/04/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Augustinus, I. Alejandra Sierra; Schiavon, Marco; Kenworthy, Kevin E.; Unruh, J. Bryan; Lindsey, Alex J.
Author Affiliation:Augustinus: Presenting Author and Environmental Horticulture, University of Florida FLREC, Davie, FL; Schiavon: Fort Lauderdale Research and Education Center, University of Florida, Davie, FL; Kenworthy: Department of Agronomy, University of Florida, Gainesville, FL; Unruh: University of Florida West Florida Research & Education Center, Jay, FL; Lindsey: University of Florida, Gainesville, FL
Title:Optimal management practices for 'Citrablue' St. Augustinegrass in South Florida
Section:Turfgrass science oral 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. 150751.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"St. Augustinegrass [Stenotaphrum secundatum (Walter) Kuntze] is the most common species used for landscape and residential areas in Florida. Although 'Floratam' remains the predominant St. Augustinegrass cultivar, new cultivars with improved genetic color and pest resistance have been developed. 'CitraBlue' has aggressive lateral growth and distinct dark green coloration compared to other St. Augustinegrass cultivars, but optimal management practices for this cultivar have yet to be investigated. The objective of this study was to determine optimal N fertilization rates, mowing height, and dethatching frequency for CitraBlue in South Florida. The experiment was conducted in 2022 and 2023 at the UF Fort Lauderdale Research and Education Center. Turfgrass was mowed at 5 or 10 cm, fertilized at 98, 195, or 293 kg N ha-1 year-1 with or without summer blackout periods, and dethatched either yearly or every 2 years. Turfgrass quality, Normalized Difference Vegetation Index (NDVI), percent green cover and dark green color index (DGCI) collected through Digital Image Analysis were assessed every two weeks. Clipping and thatch samples were collected three times a year. Clippings were oven dried to determine dry weight. Thatch was calculated as organic matter (OM) percentage determined by weight-loss-on-ignition. No differences in turfgrass quality were found between mowing heights until Aug 2022. Turfgrass quality was higher in plots fertilized with 293 kg N ha-1 year-1 compared to 98 kg N ha-1 year-1 until Jun 2022, but no differences were found thereafter. Throughout the year, turfgrass mowed at 10 cm showed higher NDVI and percent cover. Conversely, plots mowed at 5 cm showed higher OM than plots mowed at 10 cm and yielded higher clippings in Aug and Nov. Overall, median input levels yielded similar results to maximum levels, and the preferred height of cut for this cultivar lays between 5 to 10 cm."
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Augustinus, I. A. S., M. Schiavon, K. E. Kenworthy, J. B. Unruh, and A. J. Lindsey. 2023. Optimal management practices for 'Citrablue' St. Augustinegrass in South Florida. Agron. Abr. p. 150751.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=333459
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    Last checked: 12/04/2023
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