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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=203
Last checked: 07/16/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Wehtje, G.;
Walker, R. H. |
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| Author Affiliation: | Department of Agronomy and Soils, Auburn University, AL |
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| Title: | Diflufenzopyr admixtures; do they have a role in Virginia buttonweed control in warm season turf? |
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| Section: | Weed management in turf crops
Other records with the "Weed management in turf crops" Section
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| Meeting Info.: | Memphis, Tennessee: January 26-28, 2004 |
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| Source: | Proceedings: Southern Weed Science Society: 57th Annual Meeting. Vol. 57, 2004, p. 105. |
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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: Diflufenzopyr; Diodia virginiana; Fluroxypyr; Herbicide application; Herbicide combinations; Herbicide efficacy; Herbicide evaluation; Herbicide injury; Warm season turfgrasses; Weed control
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| Abstract/Contents: | "Virginia buttonweed control in warm-season turfgrass species requires high rates and/or repeated applications of herbicides with auxin-type mode of action. These treatments often lead to unacceptable turfgrass injury. Diflufenzopyr functions as a synergist with auxin-type herbicides, including pyridine herbicides such as fluroxypyr. Field and laboratory research were conducted to determine whether Virginia buttonweed control could be improved with admixtures of fluroxypyr and diflufenzopyr without unacceptable turfgrass injury. Treatments consisted of fluroxypyr applied alone at 140 and 280 g ae/ha, diflufenzopyr alone at 70 and 140 g/ha, and all possible 2-way admixtures. Treatments were applied to a hybrid bluegrass 'Thermal blue' infested with Virginia buttonweed. Sod of centipedgrass 'common', hybrid bermudagrass 'Tifway', hybrid zoysiagrass 'Emerald' and St. Augustinegrass 'Raleigh', which had been previously established in pots, were treated simultaneously and returned to a greenhouse. Experimental objectives were met by the admixture of fluroxypyr plus diflufenzopyr at 280 and 70 g/ha, respectively. This treatment provided nearly 40% more Virginia buttonweed control relative to the same rate of fluroxypyr alone. Turfgrass injury was species dependent, and was either equivalent to, or less than that obtained with fluroxypyr alone. Radiotracer studies established that, depending upon the turfgrass species, fluroxypyr absorption was either not influenced, or reduced by the addition of diflufenzopyr. Neither root nor foliar absorption of fluroxypyr by Virginia buttonweed was influenced by diflufenzopyr. Translocation of foliar-absorbed fluroxypyr was reduced, but translocation of rootabsorbed fluroxypyr was increased by diflufenzopyr. The diflufenzopyr-induced synergism may indicate that a significant portion of the applied fluroxypyr is absorbed by roots and/or other sub-soil tissues." |
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| Language: | English |
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| References: | 0 |
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| Note: | "The changing world of weed science"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wehtje, G., and R. H. Walker. 2004. Diflufenzopyr admixtures; do they have a role in Virginia buttonweed control in warm season turf?. South. Weed Sci. Soc. Proc. 57:p. 105. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=203
Last checked: 07/16/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b2207931 |
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Digitally in TIC by file name: swssp2004 |
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