Full TGIF Record # 7444
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Author(s):Wyse, D. L.; Elling, L. J.; White, D.; McGraw, R. L.
Author Affiliation:Wyse: Assoc. Prof.; Elling: Prof., McGraw: Asst. Prof., Dept. of Agron. and Plant Genetics, Univ. of Minnesota, St. Paul, MN; White: Prof., Dept. of Hort., and Res. Agron., USDA-ARS
Title:Selective quackgrass control in red fescue seed production
Section:Field crops - Soybeans, beans sugarbeets, and new herbicides
Other records with the "Field crops - Soybeans, beans sugarbeets, and new herbicides" Section
Meeting Info.:Des Moines, Iowa: December 8-10, 1981
Source:Proceedings: North Central Weed Control Conference. Vol. 36, 1981, p. 105.
# of Pages:1
Publishing Information:[Urbana, Illinois: Department of Agronomy, University of Illinois]
Keywords:TIC Keywords: Elymus repens; Festuca rubra subsp. rubra; Herbicide evaluation; Herbicide rates; Herbicide resistance; Seed production; Selective herbicides; Weed control
Abstract/Contents:"Quackgrass is the major factor currently prohibiting red fescue seed production in northern MN. This weed not only reduces seed yields, but it also prohibits certification and severely reduces seed quality. Since quackgrass seed cannot be separated from red fescue seed during the conditioning process, the producer is left with red fescue seed contaminated with quackergrass which has no economic value. In an initial greenhouse screen BAS 9052, KK 80, and RO-13-8895 were applied at 1 lb/A plus oil concentrate at 1 qt/A to seedling perennial ryegrass, smooth bromegrass, timothy, Kentucky bluegrass, reed canarygrass, red fescue, and meadow fescue. Red fescue was the only tolerant species. Subsequently, the 3 herbicides were evaluated at 0.5, 1, and 1.5 lb/A plus 1 qt of oil concentrate on Ruby, Pennlawn, Dawson, Mn 67123, Mn 6673, and Mn 66354 red fescue. All 6 red fescue strains were highly tolerant of all BAS 9052 and KK 80 treatments. RO-13-8895 caused root and shoot stunting of Ruby and Pennlawn lines; however, the plants did recover. The tolerance of the 6 strains to KK 80, RO-13-8895, and BAS 9052 at 0.5, 0.8, 1, and 1.5 lb/A plus 1 qt oil concentrate was evaluated further in 2 field experiments. None of the herbicide treatments caused visual crop injury or reduced red fescue seed yields. Two field trials were conducted to evaluate KK 80, BAS 9052, and RO-13-8895 at 0.5, 0.8, 1, and 1.5 lb/A for quackgrass control in established Pennlawn red fescue. None of the KK 80 treatments gave effective quackergrass control. BAS 9052 and RO-13-8895 gave highly effective quackgrass control at all rates tested."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wyse, D. L., L. J. Elling, D. White, and R. L. McGraw. 1981. Selective quackgrass control in red fescue seed production. Res. Rep. North Cent. Weed Control Conf. 36:p. 105.
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