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Herbicides Applied to Dodder (Cuscuta spp.) after Attachment to Alfalfa (Medicago sativa)

Published online by Cambridge University Press:  12 June 2017

J. H. Dawson and
A. R. Saghir
J. H. Dawson
Affiliation:
Agric. Res.Serv., U.S. Dep. Agric., Irrigated Agric. Res. and Ext. Center, Prosser, WA 99350
A. R. Saghir
Affiliation:
American Univ. of Beirut, Lebanon
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Abstract

When glyphosate [N-(phosphonomethyl)glycine] at 0.075 kg/ha, DCPA (dimethyl tetrachloroterephthalate) at 10 kg/ha, and H 26905 [O-ethyl-O-(3-methyl-6-nitrophenyl)-N-sec-butyl phosphorothioamidate] at 0.25 and 0.5 kg/ha were sprayed on foliage of alfalfa (Medicago sativa L. ‘Vernal’) on which field dodder (Cuscuta campestris Yunck.) and largeseed dodder (Cuscuta indecora Choisy) were attached and growing vigorously, almost all visible dodder tissue was killed and alfalfa was not injured noticeably. Some dodder recovered from haustoria within the alfalfa stems and from remnants of twined tendrils, but devastation of the alfalfa by uncontrolled dodder was prevented. PP 009 (butyl 2-[4-(5-trifluoromethyl-2-pyridyloxy)phenoxy] propionate), BAS 9052 (2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one) and RO 13-8895 (acetone-O-[D-2-[p-[(α,α,α-trifluoro-p-tolyl)-oxy] phenoxy] propionyl] oxime) at 0.25, 0.50, or 1.0 kg/ha did not control dodder.

Keywords

BAS 9052DCPAPP 009glyphosateH-26905RO 13-8895

Information

Type
Research Article
Information
Weed Science , Volume 31 , Issue 4 , July 1983, pp. 465 - 471
Copyright
Copyright © 1983 Weed Science Society of America 

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References

Literature Cited

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