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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=236
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Taylor, J. M.;
Byrd, J. D. |
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| Author Affiliation: | Mississippi State University, Mississippi State, MS |
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| Title: | Granular applications of trifloxysulfuron for weed control in bermudagrass turfgrass |
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| Section: | Formulations and interactions
Other records with the "Formulations and interactions" Section
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| Meeting Info.: | Orlando, Florida: February 9-12, 2009 |
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| Source: | 2009 Proceedings, Southern Weed Science Society. Vol. 62, 2009, p. 166. |
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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: Control methods; Granular herbicides; Herbicide combinations; Herbicide evaluation; Postemergence weed control; Prodiamine; Trifloxysulfuron; Trifolium repens; Veronica arvensis
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| Abstract/Contents: | "Granular herbicides are used in many applications for weed control in turfgrass and other sites. Most turfgrass granular herbicides are used preemergence and activated through irrigation or rainfall or if they are used postemergence are applied to wet foliage in order to be absorbed by the foliage and translocated throughout the plant. In the studies described here, trifloxysulfuron, which is normally applied postemergence and depends mainly on foliar activity was applied on various granular carriers to dry foliage and then watered in. The main type of carriers evaluated were DG-Lite, peanut hull (PNUT), and fertilizer. Also different average particle size or SGN (size guide numbers) were evaluated. The objective was to observe control of weeds through root uptake of trifloxysulfuron and determine if prodiamine was impregnated as well on the carrier with trifloxysulfuron, any preemergence control observed. In Experiment 1, treatments were applied to annual sedge on September 15, 2005. Trifloxysulfuron at 21 or 29 g ai/ha was applied on a DG-Lite 100 or peanut hull (PNUT) 75 carrier. Treatments were formulated to be applied at 435 kg/ha of product with the active ingredient either 0.015 or 0.011%. Control at 33 DAT (days after treatment) was 95% with the 29 g/ha rate on either carrier, or 83 to 85% control with 21 g/ha. The spray formulation of 29 g/ha provided 100% control. In Experiment 2, Annual bluegrass was treated on December 6, 2005 with the same treatments and rates that were in Experiment 1 plus DG-Lite or PNUT granular carriers formulated to apply 29 and 560 g ai/ha trifloxysulfuron + prodiamine, respectively. All granular products were applied at 435 kg/ha. At 83 DAT, the best treatment was the trifloxysulfuron spray treatment with 100% control. The DG-Lite carrier with 29 g/ha trifloxysulfuron provided similar control of 90%. The granular treatments that contained both trifloxysulfuron and prodiamine provided equivalent control of 93 to 90%. At 98 DAT, all treatments provided similar control of 95 to 100% except 21 g/ha trifloxysulfuron applied on PNUT carrier which provided 83% control. In Experiment 3, the same treatments were applied as in Experiment 2 with the addition of 29 + 560 g/ha trifloxysulfuron + prodiamine applied on 5-5-25 fertilizer carrier with SGN sizes of 75, 150, and 250. All treatments were applied to annual bluegrass on December 5, 2006. The trifloxysulfuron or trifloxysulfuron + prodiamine treatments on the PNUT carrier did not perform well for postemergence control of annual bluegrass. The highest control with these carriers was 63% at 55 DAT and was reduced after that. The DG-Lite carrier with trifloxysulfuron alone or in combination with prodiamine performed statistically as well as the sprayable formulation from 55 through 135 DAT. With the fertilizer carriers control tended to decrease as particle size increased. Control with trifloxysulfuron + prodiamine on fertilizer was 93, 78, and 68% with 75, 150, and 250 SGN size, respectively. In the fourth experiment, granular treatments were applied to dormant bermudagrass with winter weeds present on March 2, 2006. Trifloxysulfuron + prodiamine were applied on a DG-Lite carrier or PNUT carrier and were applied at 29 + 560 or 43 + 840 g/ha trifloxysulfuron + prodiamine. In addition, mesotrione was impregnated on the carriers and additional treatments of 29 + 560 + 280 g/ha trifloxysulfuron + prodiamine + mesotrione, respectively, were applied using both carriers. All treatments provided 100% control of henbit at 49 DAT. White clover control was better with the higher rates of trifloxysulfuron + prodiamine with 95 to 100% control at 49 DAT compared to 50 to 73% with the lower rates. The addition of mesotrione increased control of white clover with the lower rates to 85 to 98%. Corn speedwell control was also better with the higher rates of the granular treatments with 75 to 83% control compared to 23 to 40% with the lower rates. When mesotrione was added to the lower rates control increased to 68 to 78%. All treatments provided good to excellent control of dandelion and yellow woodsorrell at 75 DAT. Crabgrass control was good to excellent with all treatments. The granular treatment on DG-Lite was better than the equivalent rates of the sprayable treatments at 137 or 169 DAT. Control with 29 + 560 g/ha trifloxysulfuron + prodiamine sprayable formulation was 80% at these dates while crabgrass control with the DG-Lite formulation at the same rates was 93 to 98%." |
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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):
Taylor, J. M., and J. D. Byrd. 2009. Granular applications of trifloxysulfuron for weed control in bermudagrass turfgrass. South. Weed Sci. Soc. Proc. 62:p. 166. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=236
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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