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

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 d...

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Bibliographic Details
Published in:Weed science 1983-07, Vol.31 (4), p.465-471
Main Authors: Dawson, J. H., Saghir, A. R.
Format: Article
Language:English
Subjects:
Agricultural soils
Alfalfa
CHEMICAL CONTROL
CONTROL QUIMICO
CUSCUTA
CUSCUTA CAMPESTRIS
CUSCUTA INDECORA
DESHERBAGE
ESCARDA
Flowers
Herbicides
Leaves
LUTTE CHIMIQUE
MEDICAGO SATIVA
Parasite hosts
Parasites
Regrowth
Stems
Tendrils
WEED CONTROL
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Summary: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.
ISSN:0043-1745
1550-2759
DOI:10.1017/S004317450006940X