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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=113
Last checked: 07/23/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Barker, W. L.;
Askew, S. D.;
Beam, J. B. |
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| Author Affiliation: | Virginia Tech, Blacksburg, Virginia |
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| Title: | Prevention and remedial treatments for injury in mower tracks caused by dislodged rimsulfuron |
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| Section: | Turfgrass and plant growth regulators section
Other records with the "Turfgrass and plant growth regulators section" Section
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| Meeting Info.: | Marriott Cambridge Center, Cambridge, Massachusetts: January 5-8, 2004 |
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| Source: | Proceedings: NortheasternWeed Science Society. Vol. 58, 2004, p. 113. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Application methods; Herbicide application; Herbicide evaluation; Herbicide injury; Lateral hazards; Recommendations; Remediation; Rimsulfuron
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| Abstract/Contents: | "Virginia lies within the climatic transition zone, where both cool- and warm-season grasses survive, but neither thrives. Bermudagrass (Cynodon dactylon (L.) Pers.) is often used on golf fairways and is commonly overseeded with perennial ryegrass (Lolium perenne L.) during dormancy. Rimsulfuron selectively controls most cool-season turf species in bermudagrass, including perennial ryegrass and creeping bentgrass (Agrostis stolonifera L.). Lateral movement of rimsulfuron from treated perennial ryegrass fairways to creeping bentgrass greens via mowers and/or foot traffic is a concern for many superintendents. Three trials were conducted in 2002 and 2003 in Blacksburg, VA to determine lateral relocation potential of rimsulfuron. The study was conducted as a randomized complete block with treatments arranged in a two by four factorial design. Each treatment was replicated three times within each study. Plots were 2 m wide and 4 m long. Half of each plot consisted of perennial ryegrass that received herbicide treatment and the other half consisted of creeping bentgrass that received mower tracking. Perennial ryegrass was treated with rimsulfuron in the afternoon and overridden with a triplex mower the following morning when dew was present. The mower was driven through the perennial ryegrass and across adjacent creeping bentgrass. Factors included rimsulfuron rate (18 or 35 g ai/ha) and irrigation regime (none, irrigate perennial ryegrass two hours after rimsulfuron application, irrigate bentgrass 15 minutes after tracking, and irrigate both perennial ryegrass and bentgrass). Three additional comparison treatments included applications of gibberellic acid (GA) at 12 kg/ha, foliar iron (Fe) at 1.3 kg/ha, or both GA and Fe, to bentgrass after track appearance when perennial ryegrass was treated with 35 g ai/ha rimsulfuron. A nontreated control was also included for comparison. Distance of visible track and percent turfgrass color difference between areas inside and outside the original mower tire path were evaluated at five-day intervals after treatment. Time required for complete turfgrass recovery was recorded as the number of days required for distance of visible track to equal zero. Track length and color difference were greatly reduced by irrigating perennial ryegrass and irrigating both perennial ryegrass and bentgrass compared to other irrigation regimes at 5, 10 and 25 days after treatment. Turfgrass recovery took as long as 25 days after treatment when no irrigation was applied, and as few as 5 days when both perennial ryegrass and bentgrass were irrigated. Often, tracks were not detected when the low rimsulfuron rate was applied to perennial ryegrass and watered in two hours later. Irrigation had no effect on perennial ryegrass control. Remedial treatments of GE and Fe did not help speed recovery or improve turf aesthetics after track appearance. Results suggest that when applying rimsulfuron near creeping bentgrass, one should apply the lowest effective rate and irrigate two hours after treatment to prevent offsite injury." |
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| Language: | English |
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| References: | 0 |
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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):
Barker, W. L., S. D. Askew, and J. B. Beam. 2004. Prevention and remedial treatments for injury in mower tracks caused by dislodged rimsulfuron. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 58:p. 113. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=113
Last checked: 07/23/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 57 |
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