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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=187
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Ricker, D. B.;
Willis, J. B.;
Askew, S. D.;
Riego, D. C. |
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| Author Affiliation: | Ricker, Willis and Askew: Virginia Tech, Blacksburg; Riego: Monsanto Company, St. Louis, MO |
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| Title: | Kentucky bluegrass control with alternatives to glphosate [glyphosate] |
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| Section: | Weed management in turfgrass
Other records with the "Weed management in turfgrass" Section
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| Meeting Info.: | Charlotte, North Carolina: January 24-26, 2005 |
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| Source: | Proceedings of the 58th Annual Meeting of the Southern Weed Science Society. Vol. 58, 2005, p. 112. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Comparisons; Glyphosate; Herbicide evaluation; Herbicide resistance; Poa pratensis; Weed control
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| Abstract/Contents: | "Glyphosate-resistant turfgrass species have been developed to aid turf managers in the control of weeds on highly valued golf course turf. Glyphosate-resistant creeping bentgrass (GRCB) was the first turf species to undergo field evaluations to determine if this variety of creeping bentgrass can compete with other creeping bentgrass varieties currently on the market. Even before GRCB is available for sale in the United States, Monsanto and The Scotts Company have developed glyphosate-resistant Kentucky bluegrass (GRKB). The reasoning behind glyphosate resistant turfgrass is to provide turf manages the ability to control difficult grassy weeds, such as annual bluegrass (Poa annua L.) and bermudagrass [Cynodon dactylon (L.) Pers], more effectively. These transgenic species have the potential to lower herbicide use, simplify weed control programs, and improve the health of desired turf. By combining GRCB and GRKB tee to green on a golf course, application of glyphosate can be applied over the entire golf course controlling any potential weed problem. As with any biologically-engineered organism there is a potential for transgenic traits to be passed on to undesired species or escape into the environment. Chemical treatments must be evaluated to provide control options if an escape situation occurs. In this study, a variety of ALS inhibitors, graminicides, and non-selective herbicides were evaluated to provide recommendations for long term control of KBG plants. A 10-year old stand of 'Kelly' KBG located at the Virginia Tech Turfgrass Research Center was chosen for this trial. The experimental design was a randomized complete block with four replications and had twenty treatments and one nontreated control. Treatments included single applications of glyphosate (Roundup Pro at 1.5 lb ae/A), fluazifop (Fusilade II at 0.38 lb ai/A), clethodim (Envoy at 0.25 lb ai/A), sethoxydim (Vantage at 0.47 lb ai/A), foramsulfuron (Revolver at 0.03 lb ai/A), trifloxysulfuron (Monument at 0.03 lb ai/A), rimsulfuron (Tranxit at 0.03 lb ai/A), glufosinate (Finale at 1.0 lb ai/A), sulfometuron (Oust at 0.047 lb ai/A), imazapyr (Arsenal at 0.25 lb ai/A) and imazapic (Plateau 0.043 at lb ai/A). Sequential applications were made 4 weeks after initial treatment (WAIT) for glyphosate, fluazifop, clethodim, sethoxydim, foramsulfuron, trifloxysulfuron, and rimsulfuron. A sequential application was made 6 WAIT for glufosinate and one herbicide rotation treatment consisted of sequential fluazifop treatments followed by a final treatment of clethodim applied on 4 week intervals. All treatments were made with proper surfactant as indicated by the label. Generally, repeated applications of ALS inhibitors controlled KBG better than a single application 60 DAT. Foramsulfuron applied twice controlled KBG better long term than a single foramsulfuron application 100 DAT. Imazapyr controlled KBG 75%. Both trifloxysulfuron treatments (repeated applications and a single application) controlled KBG 100% 100 DAT. Graminicide treatments controlled KBG better than 50% 60 DAT. At 100 DAT, only repeated application of fluazifop coupled with a final treatment of clethodim controlled KBG 75%. All other graminicide treatments failed to effectively control KBG 100 DAT. Single and repeated application of glyphosate controlled KBG 75 and 100%, respectively 100 DAT. Glufosinate applied twice controlled KBG 75% 100 DAT. A single application of glufosinate controlled KBG 100% 16 DAT but did not provide long term KBG control. Trifloxysulfuron controlled KBG 100% 100 DAT when applied once or twice and is therefore recommended for long term KBG control. Glufosinate applied twice and imazapyr applied once also showed promise for KBG control, although more applications will be needed to completely control KBG." |
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| Language: | English |
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| References: | 0 |
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| Note: | "The changing world of weed science"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ricker, D. B., J. B. Willis, S. D. Askew, and D. C. Riego. 2005. Kentucky bluegrass control with alternatives to glphosate [glyphosate]. South. Weed Sci. Soc. Proc. 58:p. 112. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=187
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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