Full TGIF Record # 73967
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Mask, D. B.; Byrd, J. D. Jr.; Barnett, J.W. Jr.
Author Affiliation:Mississippi State University, Mississippi State, MS
Title:Grass weed control in bermudagrass hayfields
Section:Section II: Weed management in turf, pasture and rangeland
Other records with the "Section II: Weed management in turf, pasture and rangeland" Section
Meeting Info.:53rd Annual Meeting, Tulsa, OK, January 24-26, 2000
Source:Southern Weed Science Society Proceedings. Vol. 53, 2000, p. 58.
Publishing Information:Champaign, IL: Southern Weed Science Society.
# of Pages:1
Keywords:TIC Keywords: Weed control; Cynodon dactylon; Paspalum dilatatum; Setaria parviflora; Glyphosate; Sulfosate; Glufosinate; Imazameth; Hexazinone; Herbicides; Application rates; Herbicide evaluation; Herbicide combinations; Application timing
Geographic Terms:Florida
Abstract/Contents:"Weedy grass species like dallisgrass (Paspalum dilatatum) and knotroot foxtail (Setaria geniculata) often occur, but are hard to control in hybrid and common bermudagrass hayfields. Two field experiments were conducted in Mississippi, in the summer of 1999 to evaluate control of these grasses. At one location, in Chickasaw county, dallisgrass infested `Tifton 44' bermudagrass and at Leveck Animal Research Center at Mississippi State University, knotroot foxtail infested common bermudagrass. The herbicide treatments were Roundup at 8 or 16 fl oz/A, Touchdown at 6.4 or 12.8 fl oz/A, Finale at 21.8 or 43.5 fl oz/A, Plateau at 10 oz/A, Outrider at 1.33 oz/A, and Velpar at 32, 48, 72, or 96 fl oz/A. Kinetic surfactant at 0.25% (v/v) was used with all treatments except Roundup. Treatments were applied with a four-wheeler mounted CO2 pressurized system calibrated to deliver 18 gallons per acre. By 28 and 37 days after treatment (DAT), Roundup at 16 oz/A, Touchdown at 12.8 fl oz/A, and all rates of Velpar gave good dallisgrass control. Roundup at 16 fl oz/A proved to be the most effective treatment with dallisgrass control at 80% and bermudagrass injury around 20%. Velpar treatments gave the highest percentage of control, but bermudagrass injury was excessive at 80%. Finale at 21.8 fl oz/A, Plateau at 10 oz/A, and Outrider at 1.33 oz/A were the least effective for dallisgrass control but also showed the least bermudagrass injury. Knotroot foxtail control was very good with Roundup at 16 fl oz/A or Touchdown at 12.8 fl oz/A. These two treatments provided 80% control, respectively, with only 25% bermudagrass injury, which would be acceptable in most cases. Finale at 43.5 fl oz/A controlled dallisgrass 68% but caused 60% bermudagrass injury, which would not be an acceptable control strategy. Other treatments, such as Finale at 21.8 fl oz/A, Plateau at 10 oz/A, and Roundup at 8 fl oz/A were ineffective on knotroot foxtail as they provided only 17% or less suppression."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mask, D. B., J. D. Jr. Byrd, and J. W. Jr. Barnett. 2000. Grass weed control in bermudagrass hayfields. South. Weed Sci. Soc. Proc. 53:p. 58.
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MSU catalog number: SB 611 .S6 v.52
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