Full TGIF Record # 72181
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Spak, D. R.; Hanrahan, R.; Merrick, J.; Werner, G.
Author Affiliation:Spak: Aventis Environmental Science
Title:Ethephon: A "new" growth regulator for turfgrasses
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Meeting Info.:Minneapolis, MN: November 5-9, 2000
Source:2000 Annual Meeting Abstracts [ASA/CSSA/SSSA]. 2000, p. 168.
Publishing Information:[Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
# of Pages:1
Keywords:TIC Keywords: Ethephon; Cool season turfgrasses; Poa pratensis; Lolium perenne; Festuca arundinacea; Fine fescues; Agrostis stolonifera; Growth regulators; Growth; Seedhead inhibition; Density; Application rates; pH; Product profile
Abstract/Contents:"Ethephon [(2-chloroethyl)phosphonic acid] was commercialized in 1999 in the U.S. for regulating the growth of cool-season turfgrasses, including Kentucky bluegrass (Poa pratensis), perennial ryegrass (Lolium perenne), tall fescue (Festuca arundinacea), fine fescue (Festuca spp.), and creeping bentgrass (Agrostis palustris). Desirable plant growth responses to ethephon application include: reduced blade and sheath length, reduced seedhead formation in some species, and increased turf density due to increased lateral branching and/or leaves per shoot. Ethephon is very safe on cool-season turfgrasses, and the rate response is generally flat, which reduces the potential for injury due to misapplication and spray overlap. Ethephon is foliar absorbed with no soil activity, stable at low pH in solution, and rapidly metabolized in plant tissues to release ethylene. Basipetal transport of ethephon is poor, but acropetal transport occurs readily. The growth regulating effects of ethephon are caused by the direct effects of elevated ethylene on cell division and cell expansion resulting in modified plant growth and morphology. Ethylene antagonizes the effects of indoleacetic acid (IAA) on cell expansion and apical dominance by interfering with IAA transport and degradation. Plant response to ethephon is dependent on turf species and the physiological condition of the plant at application, an area requiring further study."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Spak, D. R., R. Hanrahan, J. Merrick, and G. Werner. 2000. Ethephon: A "new" growth regulator for turfgrasses. Annu. Meet. Abstr. p. 168.
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