Full TGIF Record # 225468
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=236
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Author(s):Montgomery, D. P.; Evans, C. C.; Martin, D. L.
Author Affiliation:Horticulture and Landscape Architecture Department, Oklahoma State University, Stillwater, OK
Title:Preemergence and postemergence control of roadside weeds with aminopyralid
Section:Weed management - utility, railroads, rights-of-ways
Other records with the "Weed management - utility, railroads, rights-of-ways" Section
Meeting Info.:San Antonio, Texas: January 23-25, 2006
Source:Proceedings: Southern Weed Science Society 59th Annual Meeting. Vol. 59, 2006, p. 164.
Publishing Information:Champaign, Illinois: Southern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Aminopyralid; Herbicide evaluation; Postemergence weed control; Preemergence weed control; Roadside turf
Abstract/Contents:"Two roadside weed control studies were conducted during the summer of 2005 to evaluate the effectiveness of Milestone VM (aminopyralid) for control of roadside weeds and tolerance of common bermudagrass. In Study One applications were made to dormant bermudagrass on March 14. Treatments evaluated in Study One included Milestone VM at 5 & 7 fl. Oz./A, alone, or combined with either Glypro Plus at 8 fl. Oz./A + Oust XP at 0.33 oz./A, Glypro Plus at 8 fl. Oz./A + Outrider at 1.33 oz./A, or Campaign at 32 fl. Oz. + AMS at 3.4 lbs./A The standard treatment in this study was Campaign at 32 fl. Oz./A + AMS at 3.4 lbs./A. In Study Two applications were applied to actively growing bermudagrass on May 10. Treatments evaluated in Study Two included Milestone VM at 5 fl. Oz./A, alone, or combined with either Garlon 3A at 32 fl. Oz./A, Garlon 32 at 12.8 fl. Oz./A + Vista at 8.5 fl. Oz./A, 2,4-D at 22.2 fl. Oz./A, or Vanquish at 8 fl. Oz./A. The standard treatment in this study was Vanquish at 16 fl. Oz./A. All treatments, excluding those that involved Campaign, included a non-ionic surfactant at 0.25% V/V. In Study One postemergence weed control was visually collected for common chickweed (Stellaria media), Carolina geranium (Geranium carolinianum), downy brome (Bromus tectorum), and preemergence weed control was collected on common ragweed (Ambrosia artemisifolia), and marestail (Hippurus vulgaris). In Study Two postemergence weed control was visually collected on kochia (Kochia scoparia) and field bindweed (Convolvulus arvensis). Treatments were applied to 10 by 20 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. In Study One at 56 days-after-application (DAA) all treatments including Milestone VM were producing 99% control of chickweed and Carolina geranium while the standard treatment of Campaign + AMS was producing 60% and 65% control, respectively. Treatments of Milestone VM alone did not provide acceptable control of downy brome, cheat, or annual ryegrass throughout the duration of this study. AT 28 DAA Milestone VM combination treatments including Oust, Campaign, and the Campaign + AMS standard were producing good (80%) to excellent (>90%) control of brome. By 56 DAA Milestone VM combination treatments, and the standard, were producing moderate to excellent control of both brome and cheat. At 56 DAA the Milestone VM combination treatment with Oust was the only treatment providing acceptable ryegrass control (>80%). Early evaluation (28 DAA) for preemergence control of common ragweed revealed that all treatments were producing good to excellent control as compared to the standard Campaign + AMS. At 56 DAA ragweed had produced significant growth in untreated plots while all Milestone VM alone or combination treatments were showing near complete control of ragweed. AT 85 DAA all Milestone VM treatments were maintaining 95% control of ragweed as compared to the standard Campaign + AMS. Marestail control was evaluated at 56 and 85 DAA and was very similar to ragweed control with one exception. The standard treatment of Campaign + AMS produced moderate control of marestail which would likely mean that some of the marestail had emerged at treatment time as this treatment should produce little if any preemergence control. Common bermudagrass greenup was evaluated on 28 and 56 DAA at which times only the Milestone VM combination treatment with Oust was producing unacceptable greenup delay. No other treatments were affecting bermudagrass greenup. At 85 DAA all bermudagrass had achieved 100% greenup however the Milestone VM combination treatment with Oust was producing very noticeable bermudagrass stunting which was allowing large crabgrass to infest. In Study Two postemergence kochia control for Milestone VM alone, or tank-mixed with either Garlon 3A or 2, 4-D amine did not provide satisfactory control throughout the duration of the study. The 3-way mix of Milestone VM, Garlon 3A, and Vista produced good control of kochia at 28 DAA (87%) that was maintained out to the 84 DAA evaluations (80%). The Milestone VM mixture with the lower rate of Vanquish produced good 28 DAA kochia control (83%) but control fell slightly to 72% by 84 DAA. The standard treatment of Vanquish at 1 pt/A produced excellent kochia control of 93% or greater throughout the duration of the study. Milestone VM alone produced moderate levels of field bindweed control during this study which ranged from 40-78%. All Milestone VM tank-mixes and the standard Vanquish treatment produced excellent control of field bindweed at both 26 and 56 DAA evaluations. Field bindweed control was at least 93% through 56 DAA. Field bindweed control was beginning to break somewhat by the 84 DAA evaluations as noted by the reduced control in the standard treatment. The data shows little bermudagrass phytotoxicity for all treatments throughout the duration of this study. At the 28 DAA evaluation a few treatments caused slight chlorosis and stunting that ranged from 2-13%. Little if any effects were noticed on bermudagrass after 28 DAT."
Language:English
References:0
Note:"Vision for the future"
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Montgomery, D. P., C. C. Evans, and D. L. Martin. 2006. Preemergence and postemergence control of roadside weeds with aminopyralid. South. Weed Sci. Soc. Proc. 59:p. 164.
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http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=236
    Last checked: 07/18/2013
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    Notes: Item is within a single large file
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