Full TGIF Record # 42199
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Betts, Kevin J.; Wyse, Donald L.; Ehlke, Nancy J.
Author Affiliation:Scientist and Professors, Department of Agronomy, University of Minnesota, St. Paul, Mn
Title:Quackgrass [Elytrigia Repens (L.) nevski] control in fluazifop resistant perennial ryegrass (Lolium Perenne L.)
Article Series:Industrial, forestry, turf, and aquatics
Meeting Info.:December 10-12, 1996; St. Louis, MO
Source:Proceedings of the North Central Weed Science Society. Vol. 51, 1996, p. 105.
# of Pages:1
Publishing Information:Champaign, IL: North Central Weed Science Society
Abstract/Contents:"A gene conferring tolerance to fluazifop and to other aryloxyphenoxy propionate herbicides was identified in annual ryegrass (Lolium multiflorum Lam.). Interspecific crosses were made between the resistant annual biotype and elite perennial ryegrass (Lolium perenne) varieties. Fluazifop resistant perennial ryegrass lines originating from the original cross were purified by five cycles of back cross and selection. One purified resistant line as evaluated under seed production management trials for seed yield and quackgrass control relative to a perennial ryegrass variety commonly grown in Minnesota. Replicated experiments were performed at Rosemount and Roseau, Minnesota locations over two seed production cycles. Quackgrass rhizomes were transplanted at the time of ryegrass seeding at a density of one rhizome per square meter. Fluazifop (0.28 kg ha⁻¹) was applied for quackgrass control in spring, summer, and/or fall. Seed yield of the resistant line was not significantly reduced relative to untreated weed free checks with any of the testing fluazifop treatments. Seed yields of the susceptible perennial ryegrass line ranged from 37% reduction with a single summer fluazifop application to 100% reduction with a single spring application or any of the multiple application treatments. Quackgrass control at both locations was most effective when fluazifop was applied using a fall + spring application schedule. Fluazifop treatment schedules which included a spring application were 98 to 100% effective in preventing quackgrass seed contamination of rye grass seed at both sites. In turf evaluation of the fluazifop resistant lines, a summer application of fluazifop (0.28 kg ha⁻¹) caused no injury. Susceptible parental perennial ryegrass lines were killed by the treatment."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Betts, K. J., D. L. Wyse, and N. J. Ehlke. 1996. Quackgrass [Elytrigia Repens (L.) nevski] control in fluazifop resistant perennial ryegrass (Lolium Perenne L.). Proc. North Cent. Weed Sci. Soc. 51:p. 105.
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