Full TGIF Record # 225200
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=209
    Last checked: 07/18/2013
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Publication Type:
i
Report
Author(s):Unruh, J. B.; Brecke, B. J.
Author Affiliation:University of Florida, IFAS, West Florida Research and Education Center, Jay, FL
Title:Turfgrass tolerance and weed control during vegetative establishment of warm-season turfgrasses
Section:Weed control options during establishment & grow-in of warm-seaon turf species
Other records with the "Weed control options during establishment & grow-in of warm-seaon turf species" Section
Meeting Info.:Charlotte, North Carolina: January 24-26, 2005
Source:Proceedings of the 58th Annual Meeting of the Southern Weed Science Society. Vol. 58, 2005, p. 134.
Publishing Information:Champaign, Illinois: Southern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Establishment; Evaluations; Grow in; Herbicide resistance; Vegetative establishment; Warm season turfgrasses; Weed control
Abstract/Contents:"Vegetative establishment of warm-season turfgrass is most often accomplished by sprigging, the planting of rhizomes and/or stolons in narrow-spaced furrows. This method is considered the most economical means of vegetative turfgrass establishment, however, sprigged grasses often require 8 to 12 weeks before full groundcover is achieved. During this establishment period, annual grass and broadleaf weeds are serious problems due to the lack of turfgrass competition. Weed competition, in turn, lengthens the time for complete turfgrass ground cover. For this reason, effective herbicides used for weed control during establishment are essential. Scientists have documented various herbicides that can be used for weed control in newly plugged or sprigged turfgrasses, although variation in tolerance among turfgrass species and cultivars to herbicides have been noted. Additionally, some herbicides or combinations of herbicides are known to inhibit rooting of some species while some appear to have little effect on rooting. Turfgrass tolerance to quinclorac, a herbicide labeled for preemergence and postemergence application in turf to control several weed species including large crabgrass [Digitaria sanguinalis (L.) Scop.], torpedograss (Panicum repens L.), white clover (Trifolium repens L.), and pennywort (Hydrocotyle spp.) was assessed on 'Tifway' and 'Tifdwarf' bermudagrass (Cynodon dactylon (L.) Pers. X C. transvaalensis Burtt-Davey) , 'Salam' seashore paspalum (Paspalum viginatum Swartz), and 'Meyer' zoysiagrass (Zoysia japonica L.). Across all species, the "at-sprigging" quinclorac application reduced ground cover below the untreated. Quinclorac applied 7 days before sprigging and 7 or 14 days after sprigging had no impact on the growth of the various turf species. Similarly, regardless of turf species, the "at-sprigging" application of quinclorac caused an average of 22% injury, while other timings averaged 8% injury five weeks after sprigging (WAS). At 8 and 13 WAS, the "at-sprigging" application was the only treatment with detectable injury (< 12%). The utilization of foramsulfuron, a postemergence sulfonylurea herbicide, during establishment is also a viable option. When evaluated 4 WAS, foramsulfuron (0.08 lb ai/a) applied at sprigging or 2WAS and oxadiazon 2G (2 lbs ai/a) applied at sprigging decreased 'Tifway' bermudagrass ground cover by 14%. When evaluated at six and nine weeks after planting, only foramsulfuron applied 2WAS and oxadiazon 2G applied at sprigging had a negative effect on grow-in. Foramsulfuron applied either 4WAS or 6WAS had no negative impact on bermudagrass establishment. By 11 weeks after planting, no treatment differences were noted. Some soil fumigants have successfully been used for weed management prior to vegetative establishment of warm-season turfgrass. Methyl bromide (350 lbs/a) and 1,3-dichloropropene at rates >25 gpa provide acceptable control of troublesome weeds when applied preplant. The necessity of laying a plastic tarpaulin over 1,3-dichloropropene treated soil has been demonstrated in several field studies."
Language:English
References:0
Note:"The changing world of weed science"
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Unruh, J. B., and B. J. Brecke. 2005. Turfgrass tolerance and weed control during vegetative establishment of warm-season turfgrasses. South. Weed Sci. Soc. Proc. 58:p. 134.
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http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=209
    Last checked: 07/18/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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