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Postattachment Control of Swamp Dodder (Cuscuta gronovii) in Cranberry (Vaccinium macrocarpon) and Carrot (Daucus carota)

Published online by Cambridge University Press:  12 June 2017

Thomas A. Bewick ,
Larry K. Binning  and
Malcolm N. Dana
Thomas A. Bewick
Affiliation:
Dep. Hort., Univ. Wis.-Madison, WI 53706
Larry K. Binning
Affiliation:
Dep. Hort., Univ. Wis.-Madison, WI 53706
Malcolm N. Dana
Affiliation:
Dep. Hort., Univ. Wis.-Madison, WI 53706
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Abstract

In a 3-y field study, the isopropylamine salt of glyphosate [N-(phosphonomethyl)glycine] at 1.7 kg ai/ha and sulphosate [trimethyl sulfonium salt of N-(phosphonomethyl)glycine] at three rates, a split application of 0.6 + 0.6 or single applications of 1.1 or 1.7 kg ai/ha satisfactorily controlled swamp dodder (Cuscuta gronovii Willd. ex R. & S. # CVCGR) in cranberry (Vaccinium macrocarpon Ait.). While none of these treatments decreased cranberry yield, sulphosate at 1.1 or 1.7 kg/ha did increase yield. Glyphosate at 0.4 kg/ha applied late in the life cycle of carrot (Daucus carota L.) when swamp dodder was in full flower satisfactorily controlled swamp dodder while increasing yield of carrot roots. Glyphosate applied early in the life cycle of carrot and dodder controlled swamp dodder but lowered yield of carrot roots.

Keywords

GlyphosatesulphosateMHCVCGR
Type
Research
Information
Weed Technology , Volume 2 , Issue 2 , April 1988 , pp. 166 - 169
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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