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| Publication Type:
| Report |
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| Author(s): | Cargill, L. M.;
Kenna, M. P.;
Montgomery, D. P. |
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| Author Affiliation: | Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK |
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| Title: | Herbicide control of bermudagrass roadside encroachment |
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| Translated Section: | Control of weeds on utility, railroad, and highway rights-of-way and on industrial sites |
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| Meeting Info.: | Nashville, Tennessee: January 16-18, 1989 |
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| Source: | Proceedings: Southern Weed Science Society. Vol. 42, 1989, p. 252. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Three field experiments were initiated in central (Location 1), western (Location 2), and eastern (Location 3) Oklahoma during the summer of 1988 to evaluate thirteen herbicide treatments for control of bermudagrass encroachment into roadside shoulders. Herbicide treatments included hexazinone (2.24 kg ha-1), hexazinone + sulfometuron (2.24 + 0.16 and 0.27 kg ha-1), glyphosate (1.12 and 2.24 kg ha-1), glyphosate + sulfometuron (1.12 and 2,24 + 0.27 kg ha-1), imazapyr (0.84, 1.12 and 1.4 kg ha -1), and imazapyr + sulfometuron (0.84, 1.12 and 1.40 + 0.27 kg ha-1). Each experiment was a randomized complete block replicated three times. Treatments were applied to 0.9 m by 30.4 m plots on 3 June (Location 1), 13 June (Location 2), and 7 June (Location 3) with a CO2 powered sprayer calibrated to deliver 20 GPA. Treatments were evaluated monthly for bermudagrass encroachment control (where 1 = no control and 10 = complete control). All treatments of hexazinone and glyphosate applied alone or in combination with sulfometuron failed to provide acceptable bermudagrass encroachment control for the entire three months at all three locations. Only those treatments of imazapyr applied alone or in combination with sulfometuron approached acceptable arrangement of the three levels of imazapyr (0.84, 1.12, and 1.40 kg ha-1) with the two levels of sulfometuron (0.0 and 0.27 kg ha-1) across the 3 locations were compared in a separate statistical analysis. Significant differences among locations for bermudagrass control were observed for each of the three evaluation dates. Significantly greater bermudagrass encroachment control was observed for locations 1 and 2 one month after treatment (MAT). Treatments with the higher rate of imazapyr (1.4 kg ha-1) provided significantly greater bermudagrass encroachment control than the two lower imazapyr treatments (0.84 and 1.12 kg ha-1) at 1 MAT. At 2 MAT, sulfometuron significantly improved bermudagrass encroachment control and a significant location by sulfometuron interaction was present. Treatments with sulfometuron increased bermudagrass control at locations 1 and 3, but did not differ at location 2. At 3 MAT< both sulfometuron and imazapyr had a significant effect on bermudagrass control and a significant imazapyr by location interaction existed. Combination treatments of imazapyr with sulfometuron provided better bermudagrass control than treatments of imazapyr alone. At locations 1 and 3, bermudagrass encroachment control was better for the high (1.40 kg ha-1) versus low (0.86 kg ha-1) rate of imazapyr applied alone or in combination with sulfometuron." |
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| Language: | English |
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| References: | 0 |
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| Note: | "Finding a common ground"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Cargill, L. M., M. P. Kenna, and D. P. Montgomery. 1989. Herbicide control of bermudagrass roadside encroachment. South. Weed Sci. Soc. Proc. 42:p. 252. |
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