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Weed Control in Established Alfalfa (Medicago sativa)

Published online by Cambridge University Press:  12 June 2017

Abstract

Several soil-applied and two foliar herbicides were evaluated for weed control in established alfalfa (Medicago sativa L.) in two experiments for two consecutive years. Most of the soil-applied herbicides effectively controlled weeds in the first harvest year following application; however, there was little carry-over into succeeding years. Except for the low rate of secbumeton [N-ethyl-6-methoxy-N′ (1-methylpropyl)-1,3,5-triazine-2,4-diamine] in the first alfalfa cutting of 1973, no herbicide treatment significantly increased alfalfa yields over the control plot. In fact, some herbicides caused injury to alfalfa at high rates of application, as did reapplication a second year at the original rate of application.

Type
Research Article
Copyright
Copyright © 1978 by the Weed Science Society of America 

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References

Literature Cited

1. Alley, H. P. and Lee, G. A. 1974. Longevity of weed control and alfalfa production resulting from herbicide use in dormant-dryland alfalfa. Res. Prog. Rep. West. Soc. Weed Sci. pages 7374.Google Scholar
2. Arnold, W. E. and O'Neal, W. B. 1972. Downy brome control in established alfalfa. Res. Rep. North Cent. Weed Control Conf. 29: 19.Google Scholar
3. Cords, H. P. 1973. Weeds and alfalfa hay quality. Weed Sci. 21: 400401.Google Scholar
4. Harvey, R. G. and Doersch, R. E. 1971. Perennial weed control in alfalfa. Res. Rep. North Cent. Weed Control Conf. 28:4.Google Scholar
5. Kapusta, G. and Strieker, C. F. 1975. Selective control of downy brome in alfalfa. Weed Sci. 23:202206.Google Scholar
6. Pearson, S. O. and Meggitt, W. F. 1968. Weed control in established alfalfa with terbacil and simazine. Res. Rep. North Cent. Weed Control Conf. 25:5657.Google Scholar
7. Swan, D. G. 1972. Effect of herbicides on alfalfa and subsequent crops. Weed Sci. 20:335337.CrossRefGoogle Scholar
8. Wakefield, R. C. and Skaland, Niles. 1965. Effects of seeding rate and chemical weed control on establishment and subsequent growth of alfalfa (Medicago sativa L.) and birdsfoot trefoil (Lotus corniculatus L.). Agron. J. 57:547550.Google Scholar