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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=277
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Montgomery, D. P.;
Evans, C. C.;
Martin, D. L. |
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| Author Affiliation: | Horticulture and Landscape Architecture Department, Oklahoma State University, Stillwater, OK |
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| Title: | Broadleaf weed control using overdrive tank mixtures |
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| Section: | Vegetation management - rights-of-way
Other records with the "Vegetation management - rights-of-way" Section
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| Meeting Info.: | Charlotte, North Carolina: January 24-26, 2005 |
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| Source: | Proceedings of the 58th Annual Meeting of the Southern Weed Science Society. Vol. 58, 2005, p. 198. |
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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: Broadleaf weed control; Herbicide evaluation; Lolium perenne; Tank mix
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| Cultivar Names: | Overdrive |
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| Abstract/Contents: | "A roadside weed control study was conducted during the summer of 2004 to evaluate Overdrive tank mixes for effectiveness in controlling summer broadleaf weeds. Overdrive was evaluated at 4, 6, & 8 oz. prod. /A alone with the 4 oz. prod. /A rate being used for all tank mix treatments. Herbicides used for tank mixes were Escort at 0.25 & 0.5 oz. prod. /A, Telar at 0.25 & 0.5 oz. prod. /A, 2,4-D amine 8 & 16 oz. prod. /A, MicroFlo triclopyr 3A at 8 & 16 oz. prod. /A, and Vanquish at 8 & 16 oz. prod. /A. All treatments included Surf King non-ionic surfactant at 0.25 % V/V. Treatments were applied on 26 May to broadleaf weeds ranging in height from 0.5 inches to 6 inches. Treatments were applied to 5 by 15 foot plots using a CO2 powered boom sprayer calibrated to deliver 20 gallons of spray solution per acre. Treatments were replicated 3 times in a randomized complete block design. Visual weed control ratings were taken for marestail (Conyza canadensis) and palmer amaranth (Amaranthus palmeri) at 13, 27, 56, and 84 days-after-treatment (DAT). Ratings were also collected on common bermudagrass injury. Before summarizing the weed control results from this study it needs to be pointed out that at the day-of-treatment all vegetation was actively growing but soil moisture conditions were dry. Soon after initial treatment untreated weeds began to show drought symptoms (13 DAT) with the drought persisting for another week to ten days before rainfall. Evaluations made at 55 and 84 DAT were made with ideal growing conditions as evidenced by increased weed control and subsequent rainfall. The early drought conditions during the first several weeks of this study were likely responsible for the slow weed control responses. Evaluations made on marestail control at 13 DAT showed moderate levels of growth suppression from all treatments. Complete vertical growth suppression and a small amount of chlorosis at terminal growing point but no necrosis was evident from all treatments. At 27 DAT growth suppression increased from all treatments with increasing levels of chlorosis but still very little necrosis or actual control was being achieved. At 55 DAT ratings large crabgrass had grown to about 14 inches in most plots and the small marestail plants were no longer visible and evaluations were not taken. However marestail plants did not outgrow the suppression as none were noticed above the canopy of crabgrass or bermudagrass for the duration of the study. Palmer amaranth was the most predominant broadleaf weed in the study. At 13 DAT evaluations palmer amaranth control ranged from 35-58% with control increasing to 35-73% at 27 DAT. At 27 DAT all treatments, despite the slow activity from the dry conditions, were producing moderate (48%) to good control (73%) except treatments including Telar. At 55 DAT, after good rainfall, palmer amaranth control increased for all treatments. While Telar treatments were not producing acceptable control most other treatments were producing good (72%) to excellent control (93%) of palmer amaranth. The combinations of 2,4-D/Overdrive were producing 88 to 90% control of palmer amaranth. By the final 84 DAT evaluations, control for all treatments had increased again as mid summer rains promoted palmer amaranth growth in untreated plots. All treatments, excluding Telar, were producing at least 80% control with treatments of Overdrive 6 & 8 oz. alone, 2,4-D, triclopyr 3A, and Vanquish producing excellent control. Very little to no common bermudagrass injury was noticed due to any of the treatments throughout the duration of this study. Many of the herbicides and rates used in this study would likely produce moderate levels of broadleaf weed control when used alone. However tank-mixing some of these products at the lower rates may have potential to produce acceptable broadleaf weed control while helping to minimize treatment costs." |
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| Language: | English |
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| References: | 0 |
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| Note: | "The changing world of weed science"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Montgomery, D. P., C. C. Evans, and D. L. Martin. 2005. Broadleaf weed control using overdrive tank mixtures. South. Weed Sci. Soc. Proc. 58:p. 198. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=277
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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