Full TGIF Record # 1790
Item 1 of 1
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Wells, D. W.
Author Affiliation:Louisiana State Univ. Southeast Hort. Exp. Sta., Hammond, LA
Title:Preliminary studies with ethofumesate for Poa annua control on Bermuda greens overseeded with perennial ryegrass
Source:Proceedings of the Annual Meeting of the Southern Weed Science Society. Vol. 35, 1982, p. 88.
Publishing Information:St. Louis, MO.
Keywords:TIC Keywords: Ethofumesate; Poa annua; Cynodon; Lolium perenne; Overseeding; Poa annua control
Abstract/Contents:"Ethofumesate (Prograss) was recently labeled for pre-emergence and/or post-emergence control of annual bluegrass and common chickweed in formant burmuda greens overseeded with perennial ryegrass. With Southeast Louisiana climatic conditions being unpredictable, it is difficult to pinpoint a time when bermuda will become dormant or if it will remain dormant throughout the winter months. Therefore, we wanted to evaluate the response of actively-establishment and Poa annua control. Ethofumesate applied at 1.0 lb/A and 2.0 lbs/A to actively-growing Tifgreen bermuda at time of overseeding with perennial ryegrass caused the bermuda to go dormant within six days. Some ryegrass began germinating on the sixth day on all treatments, but an acceptable stand was delayed by the ethofumesate treatments for approx. two weeks with some final stand reduction. Two months later, however, the ethofumesate-treated plots which were seeded at the higher recommended seeding rates (Medalist 5, 35-40 lbs per 1000 sq.ft.) had the highest quality ratings. Ethofumesate applied at 1.0 lb/A and 2.0 lb/A to bermuda greens established with perennial ryegrass for at least thirty days has shown acceptable playing conditions with no damage to the perennial ryegrass. Another evaluation will be taken on the bermuda this spring after dormancy break. Poa annua was seeded into pots of a 75% sand 25% peat mix, then treated pre-emergent at the 1.0 lb/A and 2.0 lb/A rates with excellent control at both rates. Post-emergent treatments are still being evaluated. Preliminary investigations at this point indicate that the time span between forced dormancy of the bermuda and ryegrass establishment is too long for ryegrass pre-emergent treatments to actively-growing bermuda. Treatments two to three weeks after ryegrass seeding would be acceptable. Good Poa annua control could be expected with etyhofumesate pre-emergent treatment."
Language:English
References:0
See Also:Other items relating to: POA
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wells, D. W. 1982. Preliminary studies with ethofumesate for Poa annua control on Bermuda greens overseeded with perennial ryegrass. Proc. Meet. South. Weed Sci. Soc. 35:p. 88.
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