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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Taylor, J. M.;
Coats, G. E. |
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| Author Affiliation: | Departments of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762 |
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| Title: | Effect of Roundup and MSMA combinations on grass weed control and bermudagrass tolerance on highway rights-of-way |
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| Meeting Info.: | Dallas, TX: January 17-19, 1994 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 47, 1994, p. 217. |
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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: Herbicide combinations; Cynodon dactylon; Alopecurus; Sorghum halepense; Festuca arundinacea; Weed control; Herbicide resistance; Glyphosate; MSMA
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| Abstract/Contents: | "Roundup and MSMA were evaluated in the summer of 1993 to determine the utility of tank-mixing these two herbicides for grass weed control in a bermudagrass right-of-way turf. All possible combinations of 0, 4, 8, 12, or 16 oz pr/A Roundup and 0, 1, 2, or 3 lb ai/A MSMA were evaluated. Treatments were applied on June 6 using a CO2 backpack sprayer delivering a spray volume of 25 GPA. The plot area had been mowed 2 weeks prior to treatment. The turf canopy had approximately 80% common bermudagrass cover. Weed growth stages were as follows: knotroot foxtail-8 in (6-leaf), johnsongrass-16 in (6-leaf), and tall fescue-6 in (10-tiller). By 20 DAT (days after treatment), the only treatment resulting in 10% injury was the tank mix of 3 lb/A MSMA + 16 oz/A Roundup which injured 20%. By 41 DAT, all treatments resulted in 3% injury. Comparing 4 to 12 oz/A Roundup alone, johnsongrass control increased with increasing rate through 28 DAT. From 41 to 90 DAT, 8 to 16 oz/A Roundup controlled comparably, and at 90 DAT, control ranged from 75 to 88%. At 90 DAT, control with 1 to 3 lb/A MSMA ranged from 83 to 90%. All tank mixtures at 51 to 90 DAT resulted in 78 to 90% johnsongrass control, with the exception of 65% observed with 3 lb/A MSMA + 16 oz/A Roundup. With 12 or 16 oz/A Roundup alone, control of knotroot foxtail was equivalent from 13 to 90 DAT, with 90% control noted with either rate at 90 DAT. At 90 DAT, 1, 2, and 3 lb/A MSMA controlled knotroot foxtail 50, 63, and 78%, respectively. No advantage was seen in tank-mixing Roundup + MSMA with rates lower than those which would control knotroot foxtail alone. However, no antagonism was observed either. MSMA alone did not result in more than 55% control of tall fescue from 41 to 90 DAT. With Roundup alone, 12 or 16 oz/A controlled tall fescue 78 to 88%. Tank-mixing was not advantageous for tall fescue control." |
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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 |
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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 G. E. Coats. 1994. Effect of Roundup and MSMA combinations on grass weed control and bermudagrass tolerance on highway rights-of-way. South. Weed Sci. Soc. Proc. 47:p. 217. |
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MSU catalog number: SB 611 .S6 v.47 |
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