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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=258
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Breeden, G. K.;
McElroy, J. S. |
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| Author Affiliation: | University of Tennessee, Knoxville |
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| Title: | Alternative timings of ALS herbicides and glyphosate for dallisgrass (Paspalum dilatatum) control |
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| Section: | Weed management in turf
Other records with the "Weed management in turf" Section
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| Meeting Info.: | Jacksonville, Florida: January 27-30, 2008 |
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| Source: | 2008 Proceedings, Southern Weed Science Society. Vol. 61, 2008, p. 123. |
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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: Acetolactate synthase; Application timing; Cynodon dactylon; Dallisgrass control; Glyphosate; Herbicide efficacy; Herbicide evaluation; Paspalum dilatatum; Weed control
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| Abstract/Contents: | "Dallisgrass (Paspalum dilatatum) is one of the most difficult weds to control in turf. MSMA is the primary herbicide that has been utilized the most for dallisgrass control. EPA has decided to not re-register organic arsenicals, which include MSMA. Do to the potential loss of MSMA alternatives for dallisgrass control need to be researched. Field research was initiated in 2006 and 2007 to evaluate alternative timings of ALS herbicides and glyphosate as control options for dallisgrass in bermudagrass (Cynodon dactylon) turf. Research was conducted in Knoxville, TN at the Plant Science Unit of the East Tennessee Research and Education Center and Alcoa, TN at Green Meadow Country Club. Weed control and turf injury were evaluated visually utilizing a 0 (no weed control or turf injury) to 100 (complete control of all weeds or turf) % scale. The experiments were replicated 4 times in a randomized complete block design. Experimental units were 5 by 10 feet. Herbicides were applied in a water carrier volume in Knoxville of approximately 200 GPA and in Alcoa of 30 GPA with a CO2 pressurized sprayer. Research at Knoxville evaluated simulated fall spot applications of foramsulfuron utilizing a high volume broadcast application. Treatments included in the Knoxville research were foramsulfuron (0.148 lb ai/100 gal) followed by (f.b.) foramsulfuron (0.148 lb ai/100 gal), foramsulfuron (0.148 lb ai/100 gal) + ammonium sulfate (10 lb/100 gal) f.b. foramsulfuron (0.148 lb ai/100 gal) + ammonium sulfate (10 lb/100 gal), foramsulfuron (0.148 lb ai/100 gal) + methylated seed oil (MSO) (1 % v/v) f.b. foramsulfuron (0.148 lb ai/100 gal) + MSO (1 % v/v), and foramsulfuron (0.148 lb ai/100 gal) + ammonium sulfate (10 lb/100 gal) + MSO (1 % v/v) f.b. foramsulfuron (0.148 lb ai/100 gal) + ammonium sulfate (10 lb/100 gal) + MSO (1 % v/v). All treatments received an initial application of MSMA (1.5 lb ai/a). Minimal bermudagrass injury (< 5%) was observed at anytime by any herbicide treatment. No differences in bermudagrass green-up were also observed when compared to the non-treated check. All treatments controlled dallisgrass >= 98% at 4 weeks after the sequential application (WASA). Sequential applications of foramsulfuron controlled dallisgrass >= 83% at 36 WASA. Research at Alcoa evaluated early winter applications of glyphosate followed by spring applications of sulfosulfuron. All treatments at Alcoa were applied with and without an early December application of glyphosate (2 lb ai/a). Treatments applied in the spring at Alcoa were MSMA (2 lb ai/a) f.b. MSMA (2 lb ai/a), metribuzin (0.5 lb ai/a) f.b. metribuzin (0.5 lb ai/a), sulfosulfuron (1.5 oz ai/a), sulfosulfuron (1.5 oz ai/a) f.b. sulfosulfuron (1.5 oz ai/a), sulfosulfuron (1.5 oz ai/a) + metribuzin (0.5 lb ai/a), and sulfosulfuron (1.5 oz ai/a) + metribuzin (0.5 lb ai/a) f.b. sulfosulfuron (1.5 oz ai/a) + metribuzin (0.5 lb ai/a). Minimal bermudagrass injury (< 5%) was observed at anytime by any herbicide treatment. No differences in bermudagrass green-up were also observed when compared to the non-treated check. All treatments with the early December application of glyphosate controlled dallisgrass >= 89% at 24 weeks after the initial treatment (WAIT). MSMA f.b. MSMA without glyphosate in early December controlled dallisgrass 78% at 24 WAIT. All other treatments controlled dallisgrass <= 11% at 24 WAIT. Treatments without the early December application of glyphosate controlled dallisgrass <= 66% at 30 WAIT. Glyphosate f.b. MSMA f.b. MSMA, glyphosate f.b. sulfosulfuron + metribuzin, and glyphosate f.b. sulfosulfuron + metribuzin f.b. sulfosulfuron + metribuzin controlled dallisgrass >= 89% at 30 WAIT. Glyphosate, glyphosate f.b. metribuzin f.b. metribuzin, glyphosate f.b. sulfosulfuron, and glyphosate f.b. sulfosulfuron f.b. sulfosulfuron controlled dallisgrass 76-80% at 30 WAIT. Fall applications of foramsulfuron and treatments with an early December application of glyphosate have promise for use as alternatives 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):
Breeden, G. K., and J. S. McElroy. 2008. Alternative timings of ALS herbicides and glyphosate for dallisgrass (Paspalum dilatatum) control. South. Weed Sci. Soc. Proc. 61:p. 123. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=258
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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