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Residues and Efficacy With Fluazifop-P in Alfalfa (Medicago sativa)

Published online by Cambridge University Press:  12 June 2017

Douglas J. Doohan ,
Gilles Belanger ,
Russ R. King  and
Jerry A. Ivany
Douglas J. Doohan
Affiliation:
Weed Spec., New Brunswick Dep. Agric, Fredericton, N. B., Biol, and Res. Sci., Agric. Can. Res. Stn., Fredericton, N. B. and Res. Sci., Agric. Can Res. Stn., Chariottetown, P.E.I. D. J.
Gilles Belanger
Affiliation:
Weed Spec., New Brunswick Dep. Agric, Fredericton, N. B., Biol, and Res. Sci., Agric. Can. Res. Stn., Fredericton, N. B. and Res. Sci., Agric. Can Res. Stn., Chariottetown, P.E.I. D. J.
Russ R. King
Affiliation:
Weed Spec., New Brunswick Dep. Agric, Fredericton, N. B., Biol, and Res. Sci., Agric. Can. Res. Stn., Fredericton, N. B. and Res. Sci., Agric. Can Res. Stn., Chariottetown, P.E.I. D. J.
Jerry A. Ivany
Affiliation:
Weed Spec., New Brunswick Dep. Agric, Fredericton, N. B., Biol, and Res. Sci., Agric. Can. Res. Stn., Fredericton, N. B. and Res. Sci., Agric. Can Res. Stn., Chariottetown, P.E.I. D. J.
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Abstract

Fluazifop-P, applied in the spring or fall and pronamide, applied in the fall only, reduced quackgrass infestation in established alfalfa and increased the dry matter yield of alfalfa. Herbicides did not improve alfalfa in vitro digestibility or crude protein content. Average residues of fluazifop-P in alfalfa treated with rates of 0.25 or 0.5 kg ai ha–1, were 0.1 mg kg–1 when harvested 280 d after application, and 0.06 mg kg–1 when harvested 295 d after application. Average residues in alfalfa harvested 41 and 55 d after application were 0.13 mg kg–1 and 0.1 mg kg–1, respectively, with a 0.25 kg ha–1 treatment and 0.19 mg kg–1 and 0.05 mg kg–1, respectively, with a 0.5 kg ha–1 treatment.

Keywords

Fluazifop-P, (R)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]-oxy]phenoxy]propanoic acidpronamide, 3, 5-dichloro(N-1,1-dimethyl-2-propynyl)benzamidealfalfa (Medicago sativa L.)quackgrass [Elytrigia repens (L.) Nevski ♯ AGGRE]Alfalfa yield and qualityfluazifop-PpronamideAGGRE
Type
Research
Information
Weed Technology , Volume 6 , Issue 1 , March 1992 , pp. 25 - 30
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

Literature Cited

1. Doohan, D. J., Monaco, T. J., Sheets, T. J., and Leidy, R. B. 1986. Efficacy and residues of fluazifop-butyl in strawberries. Weed Res. 26:89–98.CrossRefGoogle Scholar
2. Dutt, T. E., Harvey, R. G., Fawcett, R. S., Jorgensen, N. A., Larsen, H. J., and Schlough, D. A. 1979. Forage quality and animal performance as influenced by quackgrass (Agropyron repens) control in alfalfa (Medicago sativa) with pronamide. Weed Sci. 27:127–132.Google Scholar
3. Fawcett, R. S., Harvey, R. G., Schlough, D. A., and Block, I. R. 1978. Quackgrass (Agropyron repens) control in established alfalfa (Medicago sativa) with pronamide. Weed Sci. 26:193–198.Google Scholar
4. Leroux, G. D., and Harvey, R. G. 1986. Comparison of fall-applied pronamide with spring-applied sethoxydim for quackgrass (Agropyron repens) control in established alfalfa (Medicago sativa). Weed Sci. 34:444–448.Google Scholar
5. Parker, N. Y., Monaco, T. J., Leidy, R. B., and Sheets, T. J. 1985. Weed control with fluazifop and residues in cucurbit crops (Cucumis sp.) and sweet potatoes (Ipomoea batatas). Weed Sci. 33:405–410.Google Scholar
6. Pritchard, G. I., Folkins, L. P., and Pryden, W. J. 1963. The in vitro digestibility of whole grasses and their parts at progressive stages of maturity. Can. J. Plant Sci. 43:79–87.Google Scholar
7. Rosser, S. L., Zorner, P. S., Witt, W. W., and Olson, G. L. 1982. Uptake of fluazifop-butyl and accumulation of its free acid metabolite in johnsongrass. Proc. South. Weed Sci. Soc. 35:339.Google Scholar
8. Tilley, J.M.A., and Terry, R. A. 1963. A two-stage technique for the in vitro digestion of forage crops. J. Br. Grassl. Soc. 18:104–111.Google Scholar
9. Velovitch, J. J., and Slife, F. W. 1983. Uptake, translocation and metabolism of fluazifop-butyl in foxtail millet (Setaria italica) and common cocklebur (Xanthium pensylvanicum). Weed Sci. Soc. Am. Abstr. 23:74.Google Scholar