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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=263
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): | Durham, Michael W.;
Ferrell, Jason;
MacDonald, Greg;
Sellers, Brent |
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| Author Affiliation: | University of Florida, Gainesville, FL |
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| Title: | Aminocyclopyrachlor injury potential in roadside turf |
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| Section: | Vegetation management in utilities, railroads & highway rights of way; industrial sites
Other records with the "Vegetation management in utilities, railroads & highway rights of way; industrial sites" 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. 155. |
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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; Application methods; Herbicide combinations; Herbicide evaluation; Herbicide injury; Imazapic; Plant growth regulators; Sulfometuron
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| Trade Names: | MAT28 |
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| Abstract/Contents: | "Aminocyclopyrachlor (MAT 28) is a synthetic auxin herbicide that is being positioned for weed control along rights-of-ways. MAT 28 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 or sulfometuron, it is unknown if the addition of the MAT 28 will exacerbate the injury caused by plant growth regulators alone. In 2010, experiments were conducted near Gainesville, FL to determine the injury potential of MAT 28 (0.94, 1.88, and 3.76 oz ai/a) and imazapic (0.5 and 1.0 oz ai/a) or sulfometuron (0.375 and 0.75 oz ai/a) combinations. 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 % stunting and % injury (chlorosis), blade height and seed head counts (for bahiagrass only), were taken every thirty days until frost. Initial bahiagrass stunting and injury were noted in all treated plots. At 14 days after treatment (DAT), injury from MAT 28 alone was only 5% to 10% and stunting was 40%, regardless of application rate. Injury from imazpic alone was 10% and stunting was 40% for both rates. Sulfometuron applied alone at the low rate showed 10% injury and 40% stunting and 20% injury and 65% stunting at the high rate. Injury and stunting increased in all combinations of MAT 28 and imazapic with the most dramatic being MAT 28 (3.76 oz) plus imazapic (1 oz) with 20% injury and 70% stunting. There was no increase in injury or stunting in any of the MAT 28 and sulfometuron combinations over sulfometuron alone. At 30 DAT, bahiagrass had recovered from the two lower rates of MAT 28 alone, but the injury increased to 20% and stunting to 50% with the high rate. This was similar to imazapic alone which resulted in 25% to 30% injury and 50 to 60% stunting. MAT 28 at all rates plus the low rate of imazapic show injury at 30% and stunting ranging from 50% to 60%. At both rates of sulfometuron plus the high rate of MAT 28, injury increased to 25% to 30%. By 60 DAT all plots had recovered from injury. Stunting still occurred in all plots with the high rate of MAT 28 (20% to 50%), in plots with imazapic (10% to 50%), and with sulfometuron at the high rate, or mixed with the high rate of MAT 28 (15% to 20%). Bahiagrass seedhead reduction occurred for all treatments containing imazapic and sulfometuron. Seedhead reduction was not influenced by including MAT 28. However, by 60 DAT, MAT 28 applied alone reduced the number of seedheads by 65% at the medium rate and by 84% at the high rate. The bermudagrass showed injury (0% to15%) at 30 DAT regardless of treatment. The plots that were treated with the highest rate of MAT 28 showed the most stunting (20% to 30%). Applied alone, imazapic and sulfometuron, at both rates, showed little injury (0% to 5%) and the sulfometuron showed the most stunting (15%) at the high rate. By 60 DAT all plots had recovered from injury and stunting was less than 20% for all 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, G. MacDonald, and B. Sellers. 2011. Aminocyclopyrachlor injury potential in roadside turf. South. Weed Sci. Soc. Proc. 64:p. 155. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=263
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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