Full TGIF Record # 296692
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https://www.newss.org/wp-content/uploads/2017/07/2017-NEWSS-Proceedings-FINAL.pdf#page=71
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Publication Type:
i
Proceedings
Content Type:Abstract or Summary only
Author(s):Brewer, J. R.; Craft, J.; Rana, S.; Askew, S.
Author Affiliation:Virginia Tech, Blacksburg, VA
Title:Herbicide programs for crabgrass and goosegrass control on creeping bentgrass greens
Meeting Info.:Philadelphia, Pennsylvania: January 3-6, 2017
Source:Proceedings of the Second Annual Meeting of the Northeastern Plant, Pest, and Soils Conference. 2017, p. 64.
Publishing Information:s.l.: Northeastern Weed Science Society; Northeastern Regional Branch of the American Society of Agronomy, Crop Science Society of America, & Soil Science Society of America; and American Society of Horticultural Science - Northeastern Division
# of Pages:1
Keywords:TIC Keywords: Agrostis stolonifera; Crabgrass control; Digitaria ischaemum; Eleusine indica; Fenoxaprop-ethyl; Golf greens; Goosegrass control; Herbicide efficacy; Herbicide evaluation; Phytotoxicity; Quinclorac; Siduron; Topramezone
Abstract/Contents:"Smooth crabgrass (Digitaria ischaemum) and goosegrass (Eleusine indica) are two of the most troublesome weeds on creeping bentgrass (Agrostis stolonifera) golf greens. There are currently no herbicides registered for postemergence crabgrass or goosegrass control on creeping bentgrass greens. Some research studies have indicated that repeated treatments of fenoxaprop at weekly intervals can selectively control crabgrass and goosegrass on creeping bentgrass greens. Since fenoxaprop can injure creeping bentgrass and is not registered for use on greens, there is need for research to evaluate herbicide programs for crabgrass and goosegrass control with minimal injury to creeping bentgrass greens. At Virginia Tech, we conducted three field trials during the summer of 2016 and two greenhouse studies during the fall of 2016. For field trials, putting greens were maintained at 3.2 mm height by daily mowing and consisted of '007' and 'L93' creeping bentgrass varieties at respective sites. Crabgrass and goosegrass control were evaluated on a USGA-specification green that was maintained fallow without creeping bentgrass. The greenhouse studies used 10 cm plugs of '007' creeping bentgrass placed in two separate greenhouses at the Glade Road Research Center. Fenoxaprop and quinclorac were the most injurious treatment programs maintaining unacceptable injury (greater than 30%) for majority of the trial period. Fenoxaprop at 35 g ai ha-1 (biweekly) injured creeping bentgrass between 60 and 70% at both sites and more than other treatments, while quinclorac at 210 g ai ha-1 (biweekly) injured creeping bentgrass between 50 and 60% depending on site. Siduron applied at 5.6 kg ai ha-1 weekly or 13.5 kg ai ha-1 biweekly and topramezone applied at 1.5 g ai ha-1 weekly or 3 g ai ha-1 biweekly injured creeping bentgrass the least. Siduron injured creeping bentgrass 10% or less at both trial sites, while topramezone never injured creeping bentgrass more than 20%. The injury seen by topramezone only occurred for a short time after each of up to eight weekly treatments, and after some treatments no injury was observed. NDVI trends were similar to the observed injury. The greenhouse studies are also following the same visual injury trends as the field studies but are not yet complete. All treatments except the topramezone programs completely controlled crabgrass by week 7 on the L-93 creeping bentgrass green. Topramezone programs controlled crabgrass approximately 89% or better by week 7. Fenoxaprop completely controlled goosegrass and crabgrass at the fallow site, while quinclorac only controlled crabgrass. Siduron controlled crabgrass as well as fenoxaprop, and goosegrass slightly less. For example, siduron controlled goosegrass 80 and 94% when applied weekly or biweekly, respectively at 36 DAT and 43 and 67% when applied weekly or biweekly, respectively at 79 DAT. Topramezone controlled goosegrass as well as fenoxaprop, but was not as effective at controlling crabgrass. Results indicate that both topramezone and siduron can control crabgrass and goosegrass at commercially-acceptable levels with less injury than fenoxaprop or quinclorac."
Language:English
References:0
Note:Reprint appears in Proceedings of the Seventy First Annual Meeting of the Northeastern Weed Science Society, Vol. 71 2017, p. 43
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brewer, J. R., J. Craft, S. Rana, and S. Askew. 2017. Herbicide programs for crabgrass and goosegrass control on creeping bentgrass greens. p. 64. In Proceedings of the Second Annual Meeting of the Northeastern Plant, Pest, and Soils Conference. Philadelphia, Pennsylvania: January 3-6, 2017. s.l.: Northeastern Weed Science Society; Northeastern Regional Branch of the American Society of Agronomy, Crop Science Society of America, & Soil Science Society of America; and American Society of Horticultural Science - Northeastern Division.
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http://www.newss.org/wp-content/uploads/2017/07/2017-NEPPSC-Proceedings-FINAL.pdf#page=72
    Last checked: 04/16//2018
    Requires: PDF Reader
    Notes: Item is within a single large file
https://www.newss.org/wp-content/uploads/2017/07/2017-NEWSS-Proceedings-FINAL.pdf#page=71
    Last checked: 01/23/2023
    Requires: PDF Reader
    Notes: Item is within a single large file
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