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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=327
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Warren, L.;
Yelverton, F.;
Gannon, T. |
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| Author Affiliation: | North Carolina State University, Raleigh, NC |
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| Title: | Control of cool-season broadleaf weeds, annual bluegrass and smooth crabgrass using flumioxazin in dormant common bermudagrass turf |
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| Section: | Weed management in turf
Other records with the "Weed management in turf" Section
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| Meeting Info.: | Houston, Texas: January 28-30, 2013 |
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| Source: | Proceedings of the Southern Weed Science Society: 66th Annual Meeting. Vol. 66, 2013, p. 240. |
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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: Broadleaf weed control; Cynodon dactylon; Digitaria ischaemum; Dormancy; Flumioxazin; Herbicide efficacy; Herbicide evaluation; Poa annua control
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| Abstract/Contents: | "Dormant common bermudagrass (cynodon dactylon) turf stands are routinely infested with various winter broadleaf weeds and annual bluegrass (poa annua). When these weeds die out in late spring, smooth crabgrass (digitaria ischaemum) quickly invades the thin bermudagrass stands during summer months. Research was conducted to evaluate the efficacy of a single application of flumioxazin applied at timings ranging from November through March on germinated winter broadleaf weeds and annual bluegrass, and nongerminated smooth crabgrass. Trials were conducted at Pine Burr Golf Course in 2011-12, Lake Wheeler Turf Field Lab in 2010-12 and Thorndale Country Club in 2012. A Pine Burr and Lake Wheeler trial consisted of flumioxazin applied at 6 oz/A alone or at 10 oz/A tankmixed with 0.33 oz/A metsulfuron, and trifloxysulfuron applied at 0.45 oz/A. Induce was applied to all treatments at 0.25% v/v. Applications were made monthly from November through March. Smooth crabgrass was present in both locations during the spring and summer. Annual bluegrass was present at the Pine Burr location during applications. A separate Lake Wheeler trial evaluated annual bluegrass treated with November through March applications of flumioxazin at 6 and 12 oz/A as well as trifloxysulfuron at 0.45 oz/A. Induce was added to all treatments at 0.25% v/v. Another Lake Wheeler trial tested 10 oz/A flumioxazin and 0.33 oz/A metsulfuron, each with 0.25% v/v Induce, and 2.5 pt/A 2,4-D amine + fluroxypyr + dicamba on mouseear chickweed (cerastium vulgatum) and corn speedwell (veronica arvensis), along with greenup effects on 'Princess' bermudagrass. A trial at Thorndale was established to evaluate 6 and 12 oz/A flumioxazin plus 0.25% v/v Induce and 1.5 pt/A prodiamine. Weeds present at application included parsley-piert (alchemilla arvensis) and mouseear chickweed. Smooth crabgrass was the dominant summer weed. Trials were RCB designed with treatments replicated 4 times. Plots were sprayed on 40" centers with lengths ranging from 4 to 8 ft. Treatments were applied at 32.5 gpa and 28 psi with a 4-nozzle, 10 in spacing boom containing XR 80002VS nozzles. Data presented are visual weed control observations on a 0-100 scale with 0 being no control and 100 being complete control, and percent bermudagrass green plot coverage where 0 = no green coverage and 100 = total green plot coverage. At Pine Burr and Lake Wheeler locations, 6 oz/A flumioxazin provided similar annual bluegrass control as 0.45 oz/A trifloxysulfuron (84-99%) from November through January timings. 12 oz/A flumioxazin provided similar control as 0.45 oz/A trifloxysulfuron (89-100%) from November through February timings. The Pine Burr site was a nonirrigated sandy loam area. 6 and 10 oz/A flumioxazin controlled smooth crabgrass 70 to 94% through early August when applied in early March. Lake Wheeler soil is a heavy clay loam under irrigation. At this site, smooth crabgrass control was only 54 to 59% through an August evaluation. At Thorndale, a nonirrigated sandy clay loam site, 6 oz/A flumioxazin controlled smooth crabgrass 56% through early September when applied in early March. 12 oz/A flumioxazin provided better control (85%) which was similar to prodiamine (88%). A March application of flumioxazin at 6 oz/A controlled parsley-piert, mouseear chickweed and corn speedwell 95 to 100%. 0.33 oz/A metsulfuron provided 99% mouseear chickweed control but only 46% corn speedwell control. 2,4-D amine + fluroxypyr + dicamba controlled mouseear chickweed 88% but did not control corn speedwell at all. Four weeks after treatment, green coverage of 'Princess' bermudagrass was reduced 32% compared to the nontreated check when treated with 10 oz/A flumioxazin during spring transition (40% greenup at application). In conclusion, when applied in February or early March before spring transition, one application of flumioxazin at 10 to 12 oz/A provided excellent control of parsley-piert, mouseear chickweed and corn speedwell, as well as annual bluegrass, without injuring common bermudagrass. Flumioxazin only provided fair to good smooth crabgrass control (similar to prodiamine), probably due to summer rainfall or irrigation totals and high temperatures." |
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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):
Warren, L., F. Yelverton, and T. Gannon. 2013. Control of cool-season broadleaf weeds, annual bluegrass and smooth crabgrass using flumioxazin in dormant common bermudagrass turf. South. Weed Sci. Soc. Proc. 66:p. 240. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=327
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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