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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=212
Last checked: 07/17/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Barker, W. L.;
Beam, J. B.;
Askew, S. D. |
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| Author Affiliation: | Department of Plant Pathology, Physiology, and Weed Science, Virginia Polytechnic Institute & State University, Blacksburg, VA |
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| Title: | Bermudagrass and zoysiagrass tolerance and weed control from transition-assisting herbicides applied at early greenup |
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| Section: | Weed management in turf crops
Other records with the "Weed management in turf crops" Section
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| Meeting Info.: | Memphis, Tennessee: January 26-28, 2004 |
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| Source: | Proceedings: Southern Weed Science Society: 57th Annual Meeting. Vol. 57, 2004, p. 114. |
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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: Application timing; Cynodon dactylon; Herbicide evaluation; Herbicide residues; Overseeding; Spring green-up; Weed control; Zoysia japonica
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| Geographic Terms: | Virginia |
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| Abstract/Contents: | "Bermudagrass [Cynodon dactylon (L.) Pers.] is commonly overseeded in the commonwealth of Virginia while zoysiagrass (Zoysia japonica L.) typically is not. Each of these warm season grasses becomes infested with winter weeds regardless of overseeding. Herbicides are often used to control winter weeds or aid in transitioning overseeded turf back to a warm-season monoculture. Practitioners are often concerned about the affects herbicides may have on post-dormant warmseason grasses in early spring. The purpose of these studies was to determine bermudagrass and zoysiagrass tolerance and weed control from several herbicides that are commonly used for spring transition. Six trials were conducted at three Virginia locations, Turfgrass Research Center, Blacksburg; Independence Golf Club, Manikin-Sabot; and Goodyear Golf Club, Danville. Trials were conducted as randomized complete block designs with three replications of each treatment. Herbicides were applied mid-spring and included foramsulfuron at 5 g ai/ha, rimsulfuron at 70 g ai/ha, trifloxysulfuron at 3 g ai/ha, metsulfuron at 7 g ai/ha, chlorsulfuron at 34 g ai/ha, pronamide at 276 g ai/ha, imazaquin at 80 g ai/ha, and flazasulfuron at 70 g ai/ha. Turf coverage, turf injury and weed control were rated at two-week intervals. Imazaquin injured bermudagrass more than 30% at 3 weeks after treatment (WAT). Foramsulfuron, trifloxysulfuron, metsulfuron, chlorsulfuron, and pronamide all had significantly more bermudagrass coverage than the nontreated control at 3 WAT. Foramsulfuron, rimsulfuron, and trifloxysulfuron all had significantly more bermudagrass coverage than the nontreated control at 8 WAT. At 3 WAT, metsulfuron injured zoysiagrass over 30% and foramsulfuron, rimsulfuron, trifloxysulfuron, chlorsulfuron, pronamide, imazaquin, and flazasulfuron all had greater than 80% zoysiagrass coverage. Metsulfuron had less zoysiagrass coverage than the nontreated control 3 WAT. At 8 WAT, zoysiagrass coverage was 100% when treated with rimsulfuron, trifloxysulfuron, flazasulfuron, or pronamide. Rimsulfuron, pronamide and trifloxysulfuron controlled annual bluegrass (Poa annua L.) greater than 75% 6 WAT. Pronamide controlled corn speedwell (Veronica arvensis L.) greater than 75% 6 WAT. Trifloxysulfuron, metsulfuron, chlorsulfuron, pronamide, imazaquin, and flazasulfuron controlled mouseear chickweed (Cerastium vulgatum L.) greater than 75% 6 WAT. Pronamide and trifloxysulfuron controlled Parsley-piert (Alchemilla arvensis (L.) Scop.) greater than 75% 6 WAT. Metsulfuron, chlorsulfuron, and flazasulfuron controlled knawel (Scleranthus annuus L.) greater than 75% 6 WAT. Bermudagrass coverage typically increased due to weed control following treatment of foramsulfuron, rimsulfuron, or trifloxysulfuron. Zoysiagrass coverage also improved with the control of winter weeds by foramsulfuron, pronamide, flazasulfuron, rimsulfuron, and trifloxysulfuron. Imazaquin delayed bermudagrass greenup and metsulfuron, injured zoysiagrass initially. In these studies, the benefits of weed control tended to outweigh any slight delay in greenup or turfgrass injury associated with using transition-assisting herbicides in early spring." |
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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):
Barker, W. L., J. B. Beam, and S. D. Askew. 2004. Bermudagrass and zoysiagrass tolerance and weed control from transition-assisting herbicides applied at early greenup. South. Weed Sci. Soc. Proc. 57:p. 114. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=212
Last checked: 07/17/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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