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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2010 Proceedings-SWSS.pdf#page=197
Last checked: 08/01/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Blanton, R. L.;
Estes, A. G.;
McCarty, L. B. |
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| Author Affiliation: | Department of Horticulture, Clemson University, Clemson, SC |
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| Title: | Postemergence control of purple nutsedge (Cyperus rotundus) in 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.: | Little Rock, Arkansas: January 25-27, 2010 |
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| Source: | 2010 Proceedings, Southern Weed Science Society. Vol. 63, 2010, p. 147. |
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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: Cynodon dactylon; Cyperus rotundus; Disodium methyl arsenate; Halosulfuron-methyl; Herbicide evaluation; Imazaquin; MSMA; Postemergence herbicides; Sulfentrazone; Sulfosulfuron; Trifloxysulfuron; Weed profile
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| Trade Names: | DSMA; Certainty; Dismiss; SedgeHammer; Image |
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| Abstract/Contents: | "Purple nutsedge is considered the most troublesome weeds in the world. Native to Eurasia, it is a low-growing perennial with three-ranked leaves, triangular stems, and reddish to purple inflorescence. Its leaf tips are thicker and more rounded than yellow nutsedge. Fibrous roots connect numerous tubers or nutlets, forming a massive underground tuber and rhizome system, which gives it great capacity for reproducing and spreading. Purple nutsedge thrives in wet soil. Historically, control consisted of repeat applications of 2,4-D, MSMA, DSMA, imazaquin and culturally, ensuring adequate drainage. With the loss of availability of MSMA however, alternate products are needed. The purpose of this research was to evaluate various postemergence herbicide combinations for purple nutsedge control in bermudagrass turf. In 2009, two studies were conducted to evaluate the efficacy of several postemergent herbicides for purple nutsedge control. The studies were located at Clemson University, Pickens County, SC in common bermudagrass turf plots with a history of heavy purple nutsedge infestation. Plots were tilled several months prior to the studies in order to enhance purple nutsedge stands. Plot size measured 2.0 m by 3.0 m, replicated three times. Treatments were applied using a CO2 backpack sprayer calibrated at 20 GPA, at 30 p.s.i., with 8003 flat fan spray tips. All treatments were made on August 7, 2009 and included a 0.25% V/V non-ionic surfactant. Treatments for study one included: Certainty 75 WG (sulfosulfuron) at 0.06 lb ai/A; Certainty 75 WG at 0.0035 lb ai/A + Dismiss 4L (sulfentrazone) at 0.19 lb ai/A; Monument 75 WG (trifloxysulfuron) at 0.03 lb ai/A; Monument 75 WG at 0.015 lb ai/A + Dismiss 4L at 0.19 lb ai/A; Sedgehammer 75 WG (halosulfuron) at 0.06 lb ai/A; Sedgehammer 75 WG at 0.03 lb ai/A + Dismiss 4L at 0.19 lb ai/A; Sedgehammer 75 WG at 0.03 lb ai/A + Dismiss 4L at 0.38 lb ai/A; and Dismiss South 4SC (sulfentrazone + imazethapyr) at 0.38 lb ai/A. Treatments for study two included: Dismiss South 4SC at 0.29 lb ai/A; Dismiss South 4SC at 0.38 lb ai/A; Dismiss South 4SC at 0.45 lb ai/A; Image 70 DG (imazaquin) at 0.5 lb ai/A; Certainty 75 WG at 0.06 lb ai/A; Sedgehammer 75 WG at 0.06 lb ai/A; and Monument 75 WG at 0.026 lb ai/A. Ratings taken throughout the studies included purple nutsedge control on a 0 to 100% scale, where 0 = no control and 100 = complete control. Common bermudagrass phytotoxicity was rated on a 0 to 100% scale, where 0 = no injury and 100 = dead turf. Thirty percent was deemed the maximum tolerable level of turf injury. From study one, on October 19, 2009 (73 DAT), Monument at 0.03 lb ai/A, Certainty at 0.06 lb ai/A, and Monument at 0.015 lb ai/A + Dismiss at 0.19 lb ai/ A provided > 90% control of purple nutsedge in bermudagrass turf. Certainty at 0.035 lb ai/A + Dismiss at 0.19 lb ai/A produced > 86% control. All other treatments resulted in 62% or less control. In study two, on October 19, 2009 (73 DAT), Dismiss South at 0.38, Dismiss South at 0.45 lb ai/A, and Certainty at 0.06 lb ai/A provided > 90% purple nutsedge control. Dismiss South at 0.29 lb ai/A and Monument at 0.026 lb ai/A provided > 85% control. All others provided 75% or less control. Although bermudagrass injury was evaluated throughout the study, no significant injury was noted. Future research at Clemson University will be to evaluate new and existing herbicides for postemergence purple nutsedge control. We will also evaluate various herbicide combinations, rates, and timings for improved purple nutsedge efficacy." |
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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):
Blanton, R. L., A. G. Estes, and L. B. McCarty. 2010. Postemergence control of purple nutsedge (Cyperus rotundus) in bermudagrass turf. South. Weed Sci. Soc. Proc. 63:p. 147. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2010 Proceedings-SWSS.pdf#page=197
Last checked: 08/01/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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