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Quackgrass (Agropyron repens) Control in Red Fescue Seed Production

  • Donald L. Wyse (a1), Laddie J. Elling (a1), Donald B. White (a2) and Robert L. McGraw (a3)

Abstract

Sethoxydim {2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one}, RO-13-8895 {acetone-O-[d-2-[p-[α,α,α-trifluoro-p-tolyl-oxy]phenoxy] propionyl] oxime}, and KK-80 {4-[4-[4-(trifluoromethyl)phenoxy] phenoxyl]-2-pentenoic} were evaluated for potential use for controlling quackgrass [Agropyron repens (L.) Beauv., # AGRRE] in perennial ryegrass (Lolium perenne L. ‘NK200’), smooth bromegrass (Bromus inermis Leyss. ‘Sac’), orchardgrass (Dactylis glomerata L. ‘Nordstern’), timothy (Phleum pratense L. ‘Climax’), Kentucky bluegrass (Poa pratensis L. ‘Park’), Reed canarygrass (Phalaris arundinaceae L. ‘Rise’), meadow fescue (Festuca elatior L.), and red fescue (Festuca rubra L.). The three herbicides, when applied postemergence at 1.1 kg ai/ha, caused severe injury to all species except red fescue. ‘Pennlawn’, ‘Ruby’, ‘Dawson’, MN67123, MN673, and MN6354 red fescue entries were tolerant to the three herbicides in both greenhouse and field experiments. Sethoxydim and RO-13-8895 effectively controlled quackgrass in Pennlawn red fescue, but KK-80 was not effective.

Copyright

References

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1. Anonymous. 1970. Proc. Assoc. Official Seed Analysis. Vol. 60, No. 2. 116 pp.
2. Budd, E. G. 1982. The control of grass weeds in red fescue seed crops. J. Nat. Inst. Agric. Bot. 16:6774.
3. Comes, R. D., Marquis, L. Y., and Kelley, A. D. 1981. Response of seedlings of three perennial grasses to dalapon, amitrole, and glyphosate. Weed Sci. 29:619621.
4. Kristensen, H. 1981. Results of three years (1978–80) of trials with Fervin in Denmark. Pages 4955 in Weeds and Weed Control. 22d Swedish Weed Conference, Uppsala.

Keywords

Quackgrass (Agropyron repens) Control in Red Fescue Seed Production

  • Donald L. Wyse (a1), Laddie J. Elling (a1), Donald B. White (a2) and Robert L. McGraw (a3)

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