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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2005.pdf#page=126
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Spak, D. R.;
Myers, D. F. |
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| Author Affiliation: | Bayer Environmental Science |
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| Title: | Management of Poa species in turf - Bayer product update |
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| Section: | Turfgrass symposium
Other records with the "Turfgrass symposium" Section
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| Meeting Info.: | Capital Hilton, Washington, D.C.: January 3-6, 2005 |
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| Source: | Proceedings: NortheasternWeed Science Society. Vol. 59, 2005, p. 112. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Poa; Weed control; Foramsulfuron; Herbicide profile; Ethofumesate; Poa annua control; Injuries; Oxadiazon; Ethephon; Fenoxaprop-ethyl
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| Trade Names: | Acclaim extra; Proxy; Ronstar; Prograss; Revolver |
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| Abstract/Contents: | "Revolver (foramsulfuron) is a newly registered herbicide for the control of grassy weeds in bermudagrass and zoysiagrass turf. Foramsulfuron is a sulfonylurea herbicide that provides postemergence control of Poa annua and Poa trivialis in dormant or actively growing turf. Foramsulfuron has little preemergence activity due to a short soil half-life. Foramsulfuron has shown excellent safety on bermudagrass turf, even in newly sprigged and seeded turf. However, foramsulfuron will severely injure or kill cool season turfgrass that it contacts, so care should be taken to avoid spray drift and tracking from treated areas. Prograss (ethofumesate) has been a standard herbicide treatment for Poa annua control in cool-season turf and overseeded bermudagrass turf for many years. The performance of ethofumesate is dependent on environmental factors that can effect the level of Poa annua control and potential for turfgrass injury. For example, increased creeping bentgrass injury has been associated with poorly drained, compacted soils, and shady turf sites. Increased Poa annua control is associated with cold, hard winters, and it has been suggested that ethofumesate kills Poa annua by reducing winter survival through the depletion of the waxy cuticle. Ethofumesate works primarily as a post-emergence herbicide but does also have a short preemergence residual. Ronstar (oxadiazon) is a pre-emergence herbicide that can be used in warm season turfgrass and some cool season turfgrass to prevent the establishment of annual grassy weeds. Ronstar is available as a granular or sprayable (WP) formulation and is also available through many distributors on fertilizer carriers. Ronstar WP should not be applied to cool season turf due to potential injury. Ronstar is most commonly used as a preemergence herbicide for goosegrass and crabgrass control in bermudagrass, but can be used in late-summer/early-fall to prevent the germination of Poa annua. In bermudagrass overseeded with perennial ryegrass, Ronstar should not be applied within 16 weeks of overseeding. Ronstar is noted for a lack of root pruning as is observed with traditional DNA herbicides, and therefore, is the standard for use in newly sprigged bermudagrass sites. Proxy (ethephon) is a foliar active plant growth regulator labeled for the suppression of Poa annua and white clover seedheads and growth suppression of cool season turfgrass. Ethephon releases ethylene, a naturally occurring plant growth substance in treated leaves. Proxy is often used in a tank-mix with Primo for enhanced turf color, qualitu, and seedhead suppression. Application should be made prior to expected emergence of seedheads and repeat applications may be necessary for acceptable control. Acclaim Extra (fenoxaprop p-ethyl) is best known for its postemergence crabgrass and goosegrass control in cool season turf. However, research has been conducted which shows significant activity on Poa trivialis during the autumn and spring periods of the year. However, only perennial ryegrass and tall fescue express sufficient tolerance to applications of Extra during these time periods. Acclaim Extra is currently not labeled for this use." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Spak, D. R., and D. F. Myers. 2005. Management of Poa species in turf - Bayer product update. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 59:p. 112. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2005.pdf#page=126
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 57 |
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