Full TGIF Record # 310337
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/120506
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Ledford, Silas; McCarty, Lambert B.
Author Affiliation:Ledford: Clemson University, Clemson, SC; McCarty: Department of Plant and Environmental Sciences, Clemson University, Clemson, SC
Title:Diamond zoysiagrass seedhead control with plant growth regulators
Section:C05 turfgrass science
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Golf turf management oral 1: Cultural practices, physiology, and water (includes student competition)
Other records with the "Golf turf management oral 1: Cultural practices, physiology, and water (includes student competition)" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 120506.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Keywords:TIC Keywords: Ball roll distance; Clipping weight; Ethephon; Flurprimidol; Growth regulator evaluation; Paclobutrazol; Prohexadione-calcium; Seedhead inhibition; Simazine; Trinexapac-ethyl; Zoysia matrella
Cultivar Names:Diamond
Abstract/Contents:"Diamond Zoysiagrass [Zoysia matrella (L.) Merr.] is a recent turfgrass used on golf course putting greens. Excellent shade tolerance and minimal disease pressure are desirable traits of Diamond zoysiagrass, but seedhead production is a nuisance. Carbohydrate consumption to produce seedheads may reduce energy for shoot and root production, and negative impacts on ball roll often reduces putting quality and golfer enjoyment. Initial seedhead emergence was recorded when photoperiod lengths reached 12.2-12.5 hours in both spring and fall. Accumulated growing degree days proved to be a less consistent prediction tool. Seedhead production during transition periods for Diamond restricts cultural and chemical control options, and coincides with popular golf seasons. Treatments with plant growth regulators (PGR) before initial seedhead emergence included trinexapac-ethyl (TE), prohexadione calcium (PC), ethephon (EP), paclobutrazol (PB), flurprimidol (FP) and simazine (SI). Effects were rated in the field over two years as well as the greenhouse. Seedhead control, turfgrass quality, ball roll distance, recovery rate, clipping biomass, root biomass, leaf width and internode length were measured. Visual turfgrass quality increased with TE and PC, while EP was the only PGR to lower turfgrass quality. Seedheads were significantly reduced by SI, while repeat applications of EP increased production and other PGRs were similar to control. Aerifying recovery rate was improved by EP and SI, and reduced compared to control by all other treatments. Clipping biomass was most reduced by TE, and PC then PB, and FP to a lesser degree. Ball roll distance was not significantly different for any treatment, but smoothness of roll increased when seedheads were controlled. This study yielded new information on Diamondƕs tolerance to PGR rates, which had not been previously documented. Seedhead control in Diamond zoysiagrass likely demands implementation of a program with three or more applications. Observations of recovery rates may alter PGR programs pre- and post-aerification. Further research of PGRs and Diamond zoysiagrass is needed regarding ball roll distance."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ledford, S., and L. B. McCarty. 2019. Diamond zoysiagrass seedhead control with plant growth regulators. Agron. Abr. p. 120506.
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