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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Arnold, J. C.;
Coats, G. E.;
Taylor, J. M.;
Hutto, K. C. |
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| Author Affiliation: | Mississippi State University, Mississippi State, MS |
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| Title: | Evaluation of Plateau®, Oasis®, and Outrider® for control of johnsongrass (Sorghum halepense) on highway rights-of-way |
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| Section: | Section IV: Forest vegetation management
Other records with the "Section IV: Forest vegetation management" Section
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| Meeting Info.: | 54th Annual Meeting, Biloxi, Mississippi: January 22-24, 2001 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 54, 2001, p. 126. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Imazameth; Imazapic; Sulfometuron; Glyphosate; Herbicides; Sorghum halepense; Weed control; Roadside turf; Cynodon dactylon; Herbicide injury; Herbicide evaluation; Rights-of-way; Herbicide combinations; Application rates; 2,4-D; MSMA
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| Trade Names: | Plateau; Oasis; Outrider; Oust; Roundup Pro |
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| Abstract/Contents: | "Two experiments were established to evaluate johnsongrass control on highway rights-of-way. Applications were made with a CO2 backpack sprayer to 4-8 leaf johnsongrass. Visual ratings were made through 3 months after treatment (MAT) at monthly intervals. Herbicides evaluated included imazapic, imazapic + 2,4-D, MSMA, sulfosulfuron, sulfometuron, and glyphosate. The first experiment was conducted in 1999 and repeated in 2000 to evaluate imazapic and MSMA combinations. The purpose of this experiment was to determine if the addition of MSMA to imazapic increased johnsongrass control as well [as] increasing the spectrum of weeds controlled. The imazapic rates were 0.0625, 0.094, and 0.125 lb ai/A. The MSMA rates were 0, 1, and 2 lb ai/A. when averaged over 2 years, johnsongrass control at 2 MAT was at least 83% with 0.125 lb/A imazapic alone or tank-mixed with MSMA and 0.094 lb/A imazapic tank-mixed with 2 lb/A MSMA. These treatments were significantly better than all other treatments. At 3 MAT, results were similar to the 2 MAT ratings, johnsongrass control was at least 79%. The addition of 2 lb/A MSMA to 0.094 lb/A imazapic increased johnsongrass control to 81% compared to 66% with imazapic alone. Johnsongrass control with all other treatments was 66% or less. These data indicate that 0.125 lb/A imazapic could be used alone for adequate johnsongrass control, however, using 0.094 lb/A imazapic would require the addition of 2 lb/A MSMA to achieve equivalent johnsongrass control. Imazapic rates lower than 0.094 did not provide acceptable johnsongrass control with the addition of MSMA and therefore would not be recommended. The second experiment compared to 0.156 lb/A imazapic, Oasis® (0.188 lb/A imazapic + 0.375 lb ae/A 2,4-D acid), and 0.062 lb ai/A Outrider® (sulfosulfuron) and an industry standard of 0.05 lb ai/A Oust® (sulfometuron) tank-mixed with 0.5 lb ai/A Roundup Pro® (glyphosate). Johnsongrass control was 90% with imazapic or imazapic + 2,4-D, which was better than sulfosulfuron (80%) or sulfometuron + glyphosate (85%) at 2 MAT. Imazapic or imazapic + 2,4-D controlled johnsongrass at least 89% at 3 MAT compared to 80% or less with other treatments. Bermudagrass injury was within an acceptable level (<30%); however, bermudagrass density was 50% with sulfosulfuron compared to 23% or less with all other treatments at 3 MAT." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Other items relating to: M S M A
Other items relating to: 2, 4 - D in Turf |
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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):
Arnold, J. C., G. E. Coats, J. M. Taylor, and K. C. Hutto. 2001. Evaluation of Plateau®, Oasis®, and Outrider® for control of johnsongrass (Sorghum halepense) on highway rights-of-way. South. Weed Sci. Soc. Proc. 54:p. 126. |
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MSU catalog number: SB 611 .S6 v.54 |
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