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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=190
Last checked: 08/05/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Cross, Robert;
Estes, Alan;
McCarty, Bert |
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| Author Affiliation: | Clemson University, Clemson, SC |
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| Title: | Postemergence dallisgrass control without MSMA |
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| Section: | Weed management in turf
Other records with the "Weed management in turf" Section
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| Meeting Info.: | San Juan, Puerto Rico: January 24-26, 2011 |
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| Source: | 2011 Proceedings, Southern Weed Science Society. Vol. 64, 2011, p. 82. |
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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 x Cynodon transvaalensis; Dallisgrass control; Herbicide evaluation; MSMA
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| Cultivar Names: | Tifway 419 |
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| Abstract/Contents: | "Dallisgrass (Paspalum dilatatum Poir.) is a warm-season clump-forming perennial weed that is troublesome to control in many turf situations. Its coarse texture and fast growth rate disrupt turf quality in golf course and sports fields. MSMA (monosodium methanearsonate) is an effective herbicide for the control of dallisgrass, but will no longer be a control option in the near future because of its removal from the market. A field study was conducted in Clemson, S.C. in the fall of 2010 to evaluate postemergence dallisgrass control without MSMA in 'Tifway 419' bermudagrass [Cynodon dactylon (L.) Pers. X C. transvaalensis Burtt-Davy.] using various herbicides. Plot sizes for each treatment were 3.0 m by 2.0 m, with three replications. Treatments were applied using a CO2 pressurized backpack sprayer calibrated to deliver 20 gallons per acre. The sprayer was calibrated to deliver 1 gallon per 1,000 square feet for spot treatments. Initial and sequential herbicide treatments were made to all plots on September 12 and October 20, 2010, respectively. Treatments included: glyphosate (140 g ai/ha), topramezone (24.5 g ai/ha), topramezone + metribuzin (280 g ai/ha), topramezone + imazamox (105 g ai/ha), topramezone + glyphosate, imazamox + metribuzin, and imazamox + glyphosate. Spot treatments included: foramsulfuron (13 g ai/ha), foramsulfuron + Celsius [iodosulfuron + thiencarbazone + dicamba] (22 g ai/ha), and imazamox (224 g ai/ha). Visual ratings were taken at weekly intervals throughout the study. Percent dallisgrass control was rated on a 0-100% scale with 0% representing no control and 100% being no dallisgrass present. Phytotoxicity to 'Tifway 419' bermudagrass was also measured on a 0-100% scale, with 0% being no damage to bermudagrass turf, and 100% being dead bermudagrass turf. Plots will be evaluated in the spring to determine dallisgrass control based on reemergence. Bermudagrass will also be evaluated for spring green-up. No treatment provided greater than 70% control after the first application. Glyphosate, imazamox + glyphosate, topramezone + glyphosate, and imazamox as a spot treatment all provided greater than 85% dallisgrass Dallisgrass controlcontrol after two applications. These treatments also provided >30% bermudagrass injury. Spot treatments of foramsulfuron and foramsulfuron + iodosulfuron + thiencarbazone + dicamba provided no injury to bermudagrass (0%), but less than 57% dallisgrass control. With the future removal of MSMA from the market, turf managers are likely to incur more turf damage in exchange for dallisgrass control." |
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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):
Cross, R., A. Estes, and B. McCarty. 2011. Postemergence dallisgrass control without MSMA. South. Weed Sci. Soc. Proc. 64:p. 82. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=190
Last checked: 08/05/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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