Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-23T08:58:20.419Z Has data issue: false hasContentIssue false

Dodder (Cuscuta spp.) Control in Established Alfalfa (Medicago sativa) with Glyphosate and SC-0224

Published online by Cambridge University Press:  12 June 2017

Jean H. Dawson*
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Irrigated Agric. Res. and Ext. Cent., Prosser, WA 99350

Abstract

Glyphosate and SC-0224 at 75 or 150 g ae/ha, applied to alfalfa foliage after field dodder and largeseed dodder were parasitically well established, controlled dodder selectively. Glyphosate applied at any time over a range of developmental stages stopped the growth of dodder. Control was best when the herbicides were applied when alfalfa was 20 to 30 cm tall, when maximum length of dodder shoots was 30 to 60 cm, and while host and parasite were both vegetative and growing vigorously. Later application allowed dodder to injure alfalfa before being controlled, and earlier application sometimes allowed dodder to recover and suppress alfalfa before the hay was cut.

Type
Research
Copyright
Copyright © 1989 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Bellinder, R. R., Hatzios, K. K., and Wilson, H. P. 1985. Mode of action investigations with the herbicides HOE-39866 and SC-0224. Weed Sci. 33:779785.CrossRefGoogle Scholar
2. Bewick, T. A., Binning, L. K., and Dana, M. N. 1988. Postattachment control of swamp dodder (Cuscuta gronovü) in cranberry (Vaccinium macrocarpon) and carrot (Daucus carota). Weed Technol. 2:166169.CrossRefGoogle Scholar
3. Cooley, W. E., and Foy, C. L. 1985. Effects of glyphosate, SC-0224 (trimethylsulfonium carboxymethylaminomethylphosphonate) and trimethylsulfonium + on the growth and free amino acid pool levels of inflated duckweed (Lemna gibba L.). Abstr. Weed Sci. Soc. Am., p. 69.Google Scholar
4. Dawson, J. H. 1966. Response of field dodder to shade. Weeds 14:45.CrossRefGoogle Scholar
5. Dawson, J. H. 1989. Established forage alfalfa (Medicago sativa) tolerates glyphosate and SC-0224 applied to control dodder (Cuscuta spp.). Weed Technol. 3:560565.Google Scholar
6. Dawson, J. H., and Saghir, A. R. 1983. Herbicides applied to dodder (Cuscuta spp.) after attachment to alfalfa (Medicago sativa). Weed Sci. 31:465471.Google Scholar
7. Fer, A. 1984. Physiological approach to the chemical control of Cuscuta: experiments with 14C-labelled herbicides. Proc. Third Int. Symp. Parasitic Weeds, Aleppo, p. 164174.Google Scholar
8. Kivlin, P. T., and Doll, J. D. 1988. Quackgrass (Agropyron repens) control with SC-0224 and glyphosate. Weed Technol. 2:147152.CrossRefGoogle Scholar