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1 results

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

  • Thomas A. Bewick, Larry K. Binning, Malcolm N. Dana
  • Journal:
    Weed Technology / Volume 2 / Issue 2 / April 1988
    Published online by Cambridge University Press:
    12 June 2017, pp. 166-169

  • 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.