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Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=178 Last checked: 07/24/2013 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Author(s): | Blanton, R. L.;
Estes, A. G.;
McCarty, L. B. |
Author Affiliation: | Department of Horticulture, Clemson University, Clemson, SC |
Title: | Preemergence and postemergence control of goosegrass (Eleusine indica) in bermudagrass turf |
Section: | Weed management in agronomic crops Other records with the "Weed management in agronomic crops" Section
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Meeting Info.: | Jacksonville, Florida: January 27-30, 2008 |
Source: | 2008 Proceedings, Southern Weed Science Society. Vol. 61, 2008, p. 16. |
Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Cynodon dactylon; Eleusine indica; Goosegrass control; Herbicide efficacy; Herbicide evaluation; Phytotoxicity; Postemergence weed control; Preemergence weed control
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Abstract/Contents: | "Goosegrass is a clumpy summer annual with a whitish/silver center, and is found in all turf situations. It is able to survive in wet or dry compacted soils, and can withstand close mowing heights which makes control difficult. The purpose of this research was to evaluate various preemergence and postemergence herbicides for goosegrass control in bermudagrass turf. In the summer of 2007, two studies were conducted to evaluate the efficacy of several preemergent and postemergent herbicides for goosegrass control. The studies, located in Pickens County, SC at "The Rock at Jocassee" golf course, were conducted on a common bermudagrass fairway with a previous history of heavy goosegrass infestation. 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. Preemergence treatments for study one included: Outlook 6L (dimethenamid) at 1.5 lb ai/A (Initial); Outlook at 1.5 lb ai/A + Pendulum 3.8 CS (pendimethalin) at 2 lb ai/A (Int.); Ronstar 2G (oxadiazon) at 3 lb ai/A (Int.); Ronstar at 2 lb ai/A (Int.) followed by Ronstar at 1 lb ai/A (8 WAIT); Ronstar at 1.5 lb ai/A (Int.) fb Ronstar at 1.5 lb ai/A (8 WAIT); Ronstar at 2 lb ai/A (Int.); Pendulum at 3 lb ai/A (Int.); Dimension 2 SC (dithiopyr) at 1 lb ai/A (Int.); and Barricade 4L (prodiamine) at 1 lb ai/A (Int.). Initial preemergence applications for study one were applied March 28, 2007 with sequential treatments 8 weeks later. Postemergence treatments for study two included: MSMA 6.6 L (Monosodium Acid Methanearsonate) at 2.0 lb ai/A + Sencor 75 DF (Metribuzin) at 0.25 lb ai/A (Int. & 3 WAIT); Dismiss 4L (Foramsulfuron) at 0.25 lb ai/A (Int. & 3 WAIT); Dismiss at 0.375 lb ai/A (Int. & 3 WAIT); Dismiss at 0.375 lb ai/A + Sencor at 0.25 lb ai/A (Int. & 3 WAIT); Sencor at 0.25 lb ai/A (Int. & 3 WAIT); Revolver 0.19 SC (Foramsulfuron) at 0.04 lb ai/A (Int. & 3 WAIT); Dismiss at 0.375 lb ai/A + Revolver at 0.04 lb ai/A (Int. 3 WAIT); Illoxan 3L (Diclofop) at 1.0 lb ai/A (Int. & 3 WAIT); and Dismiss at 0.375 lb ai/A + Illoxan at 1.0 lb ai/A (Int. & 3 WAIT). Initial postemergence treatments were applied on July 16, 2007 with a sequential application on August 7, 2007, 3 weeks after the initial treatment. All treatments in study 2 received a non-ionic surfactant at 0.25% V/V. Ratings taken throughout the studies included goosegrass 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. With the preemergent study, on September 11, 2007 (163 DAIT), Ronstar at 3.0 lb ai/A and Ronstar at 2.0 lb ai/ A followed by Ronstar at 1.0 lb ai/A 8 WAIT provided > 70% goosegrass control. Ronstar at 1.5 lb ai/A followed by Ronstar at 1.5 lb ai/A 8 WAIT provided > 50% goosegrass control, while all other treatments provided < 50 % goosegrass control. With the postemergent study after two applications 3 weeks apart, MSMA + Sencor, Dismiss + Sencor, Sencor, Revolver, and Dismiss + Revolver all provided > 80% control on September 11, 2007 (53 DAIT). Although bermudagrass injury was evaluated throughout the study, it never exceeded our maximum level of 30% injury. Future research at Clemson University will be to evaluate new and existing herbicides for preemergence and postemergence goosegrass control. We will also evaluate various herbicide combinations, rates, and timings for improved goosegrass efficacy." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Blanton, R. L., A. G. Estes, and L. B. McCarty. 2008. Preemergence and postemergence control of goosegrass (Eleusine indica) in bermudagrass turf. South. Weed Sci. Soc. Proc. 61:p. 16. |
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| Web URL(s): http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=178 Last checked: 07/24/2013 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: b2207931 |
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