Full TGIF Record # 34291
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Johnson, B. Jack
Author Affiliation:Department of Crop & Soil Sciences, University of Georgia, Georgia Station, Griffin, GA 30223-1797
Title:Response of Tifway bermudagrass and tall fescue to preemergence herbicides
Source:Journal of Environmental Horticulture. Vol. 12, No. 1, March 1994, p. 19-23.
Publishing Information:Washington, DC: Horticultural Research Institute
# of Pages:5
Keywords:TIC Keywords: Cynodon; Cynodon dactylon; Cynodon transvaalensis; Festuca arundinacea; Herbicide resistance; Preemergence herbicides; Prodiamine; Butralin; Pendimethalin; Dithiopyr; Oxadiazon; Oxyfluorfen + Oryzalin; Oryzalin; Benfluralin + Oryzalin
Cultivar Names:Tifway; Kentucky 31
Abstract/Contents:"It is important that preemergence herbicides used for annual weed control in warm- and cool-season turf not injure the desired turfgrass species. A field experiment was conducted for two years to determine the tolerance of Tifway Bermudagrass [Cynodon transvaalensis Burtt-Davy x C. dactylon (L.) Pers.] and K-31 tall fescue (Festuca arundinacea Schreb.) to preemergence herbicides. Herbicides were applied at recommended (1X) and twice the recommended (2X) rates. Prodiamine (Barricade) at <= 1.6 kg/ha (<=1.5 lb/A), butralin (EXP 30910A and EXP 31068A) at <= 11.2 kg/ha (<=10.1 lb/A), pendimethalin (Pre M and Weedgrass Control) at 3.4 kg/ha (3.0 lb/A) and dithopyr EC (Dimension) at 0.8 kg/ha (0.75 lb/A) on February 24 did not reduce the quality or shoot density of Tifway bermudagrass. Tifway bermudagrass injured by oxadiazon (Ronstar) >= 4.5 kg/ha (>= 4.0 lb/A) recovered by late April to early May, while turf treated with oxyfluorfen plus oryzalin (Rout) at 2.2 + 1.1 kg.ha (2.0 + 1.0 lb/A) recovered by late April and turf treated at 4.5 + 2.2 kg/ha (4.0 + 2.0 lb/A) generally did not recover by late June. Tifway bermudagrass treated with oryzalin (Surflan) alone at <= 6.7 kg/ha (6.0 lb/A) did not recover by late June. However, turf treated with benefin plus oryzalin (XL) at 1.7 + 1.7 kg/ha (1.5 + 1.5 lb/A) recovered by this date. None of the preemergence herbicides severely reduced quality or shoot density of tall fescue except oxyfluorfen plus oryzalin (Rout) applied at <= 4.5 + 2.2 kg/ha (<= 4.0 + 2.0 lb/A), oryzalin (Surflan) at 6.7 kg/ha (6.0 lb/A), and benefin plus oryzalin (XL) at 3.4 + 3.4 kg/ha (3.0 + 3.0 lb/A)."
Language:English
References:12
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Johnson, B. J. 1994. Response of Tifway bermudagrass and tall fescue to preemergence herbicides. J. Environ. Hortic. 12(1):p. 19-23.
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