Full TGIF Record # 310393
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/118889
    Last checked: 02/10/2020
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Kong, Siew Teck; Meeks, Meghyn; Chandra, Ambika
Author Affiliation:Texas A&M University System, Texas A&M AgriLife Research, Dallas, TX
Title:Spring seedhead suppression in putting green zoysiagrass using ethephon
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Turfgrass management and ecology poster (includes student competition)
Other records with the "Turfgrass management and ecology poster (includes student competition)" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 118889.
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: Cultivar evaluation; Ethephon; Golf greens; Growth regulator evaluation; Phytotoxicity; Seedhead inhibition; Zoysia matrella; Zoysia matrella x Zoysia minima
Cultivar Names:Diamond; DALZ 1308
Trade Names:Proxy
Abstract/Contents:"The emergence of zoysiagrass (Zoysia spp.) seedheads in the spring can present management challenges for golf courses. For fairways and putting greens, seedheads result in unsightly change in coloration and aesthetics, reduces mowing quality and ball roll accuracy, can produce off-types, and can increase maintenance costs for equipment sharpening. The application of ethephon (Proxy), a plant growth regulator, before fall dormancy has recently been shown to result in effective spring seedhead suppression in 'Meyer' (Z. japonica) zoysiagrass in the transition zone. In this study, we investigated the effectiveness of fall and spring applications of ethephon for spring seedhead suppression of putting green zoysiagrass cultivars such as 'Diamond' (Z. matrella) and 'DALZ 1308' (Z. minima x Z. matrella). Each cultivar was established from sprigs on a USGA grade putting green as 3.7-m x 4.6-m blocks and divided into three replications. Excluding the untreated control treatment, ethephon was applied at the labeled rate of 147.7 ml per 92.9 m2 to 1.2m x 0.9 m plots on 26 October, 7 November, and 29 November in 2018 and was followed by a spring treatment to all plots (excluding control) on 22 Mar. 2019 when visual signs of spring greenup exceeded 50%. A spring only ethephon treatment was also tested. Percentage of seedheads per 929-cm2 and seedhead density per 2.54-cm2 were quantified weekly. Data collection began when seedheads first became visible 1 WAA (week after application) of ethephon in the spring for Diamond and 4 WAA for DALZ 1308 and continued through 7 WAA when new seedhead emergence ceased. Visual turfgrass quality, plant height and seedhead height were also recorded for each treatment at 7 WAA. Data will be presented to show any chemical phytotoxicity observed and the effectiveness of different timing of application on putting green zoysiagrass seedhead suppression."
Note:This item is an abstract only!
"Poster 1613"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kong, S. T., M. Meeks, and A. Chandra. 2019. Spring seedhead suppression in putting green zoysiagrass using ethephon. Agron. Abr. p. 118889.
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