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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=258
Last checked: 08/07/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Durham, M. W.;
Ferrell, J.;
Sellers, B. A. |
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| Author Affiliation: | Durham and Ferrell: University of Florida, Gainesville, FL; University of Florida, Ona, FL |
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| Title: | Aminocyclopyrachlor use on Florida roadside turf |
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| Section: | Vegetation management in utilities, railroads & highways rights-of-way; industrial sites
Other records with the "Vegetation management in utilities, railroads & highways rights-of-way; industrial sites" Section
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| Meeting Info.: | Charleston, South Carolina: January 23-25, 2012 |
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| Source: | 2012 Proceedings, Southern Weed Science Society. Vol. 65, 2012, p. 186. |
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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: Aminocyclopyrachlor; Cynodon dactylon; Herbicide combinations; Herbicide efficacy; Herbicide evaluation; Herbicide injury; Imazapic
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| Geographic Terms: | Florida |
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| Abstract/Contents: | "Aminocyclopyrachlor (AMCP) is a synthetic auxin herbicide that is being positioned for weed control along rights-of-ways. AMCP is a highly effective herbicide, but has been shown to injure bahiagrass or bermudagrass turf when applied at high rates. Since many of these rights-of-ways will also receive plant growth regulators, such as imazapic, it is unknown if the addition of the AMCP will exacerbate the injury caused by the plant growth regulator. In 2011, experiments were conducted near Gainesville, FL to determine the injury potential of AMCP (0.94, 1.88, and 3.76 oz ai/a) and imazapic (0.5 and 1.0 oz ai/a) combinations on common bermudagrass (Cynodon dactylon). Herbicides were applied with a CO2 backpack sprayer at 20 gallons per acre and plot sizes were 6.6 feet by 10 feet. Visual ratings of % density reduction and % yellowing (chlorosis), and blade height, were taken at 1, 2,4, and 7 weeks after treatment (WAT). Initial bermudagrass yellowing was noted in all treated plots and ranged from 5% to 10%. At 2 WAT, the bermudagrass began showing a reduction in canopy density, an increase in yellowing in treated plots, but no height differences. Density reduction from AMCP alone ranged from -7% to -17%, imazapic treatments ranged from -10% to -15%, and all combination treatments ranged from -11% to -20%. Yellowing was higher in the high rate of AMCP and imazapic combinations (35% for both rates of imazapic) than in the imazapic alone treatments (20% and 25% respectively). All other treatments ranged from17% to 30%. By 4 WAT, the turf began to show an increase in density at the two lower rates of AMCP alone (> -5%) and in the combinations with imazapic (-7% to -17%). The high rate of AMCP (-25%), along with the two combination treatments with the high rate of AMCP (-22% to - 25%) showed a greater reduction in canopy density. The amount of yellowing continued to increase for all treatments except for the imazapic alone treatments (3% and 15% respectively). The two low rates of AMCP exhibited 20% yellowing while the high rate was at 48%. The combination treatment with the high rate of AMCP had up to 48% yellowing as well. By 7 WAT none of the treatments differed from the untreated in color. The high rate of AMCP and both of the imazapic combination treatments exhibited a -15% reduction in density. The two lower rates of AMCP and both rates of imazapic alone showed no reduction. The two lower AMCP rate combinations showed a decrease of -5% to -10%. By 11 WAT there was no visible difference between any of the treatments." |
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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):
Durham, M. W., J. Ferrell, and B. A. Sellers. 2012. Aminocyclopyrachlor use on Florida roadside turf. South. Weed Sci. Soc. Proc. 65:p. 186. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=258
Last checked: 08/07/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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