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| Web URL(s): | http://usgatero.msu.edu/v02/n07.pdf
Last checked: 4/2003
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Kane, Randy;
Miller, Lee |
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| Title: | Field testing plant growth regulators and wetting agents for seedhead suppression of annual bluegrass |
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| Source: | USGA Turfgrass and Environmental Research Online. Vol. 2, No. 7, April 1 2003, p. [1-9]. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Growth regulators; Wetting agents; Seedhead inhibition; Poa annua; Poa annua control; Mefluidide; Phytotoxicity; Agrostis stolonifera; Ethephon; Trinexapac-ethyl; Paclobutrazol; Maleic hydrazide; Endothall; Ethofumesate; Flurprimidol; Golf courses
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| Abstract/Contents: | "Superintendents in northern Illinois have been trying to suppress spring flowering of annual bluegrass for many years. Heavy annual bluegrass seeding causes objectionable turf color and reduced aesthetic appeal of turf swards, and reduces putting speed and smoothness of greens in early to mid-spring. Success of season-long annual bluegrass reduction/control programs may be improved by reducing the annual bluegrass "seedbank" in the soil. Three golf course sites were treated with plant growth regulators and wetting agents in April and May of 2000-02, including both green and fairway height turf. Initial treatments were timed to coincide with flowering of the earliest biotypes. Of the PGRs tested, mefluidide (Embark T&O) provided the strongest and most consistent seedhead suppression over all sites and years. However, significant phytotoxicity on creeping bentgrass in mixed swards was observed, particularly when hard frosts occurred following treatments. Ethephon (Proxy), alone and in tank mixes with trinexepac-ethyl (Primo), provided good to excellent seedhead suppression, but the results were more variable over sites and years. Phytotoxicity from ethephon is less of a concern than with mefluidide, and may be reduced by tankmixing with trinexepac-ethyl. Paclobutrazole (Enhancer, Trimmit) and trinexepac-ethyl did not significantly reduce annual bluegrass seeding when applied alone. The wetting agent Aqua-Gro L inhibited annual bluegrass seeding to a limited extent in our tests. This formulation of Aqua-Gro is no longer manufactured." |
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| Language: | English |
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| References: | 5 |
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| See Also: | Other items relating to: Wetting Agents
Other items relating to: P G Rs 1997-2006 |
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| See Also: | Other Reports from this USGA research project: 2000-26-194 |
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| Note: | Pictures, color & b/w
Tables
Graphs
Summary as abstract |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kane, R., and L. Miller. 2003. Field testing plant growth regulators and wetting agents for seedhead suppression of annual bluegrass. USGA Turfgrass Environ. Res. Online. 2(7):p. [1-9]. |
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| Web URL(s):
http://usgatero.msu.edu/v02/n07.pdf
Last checked: 4/2003
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 A65 [online] |
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