Ecology, distribution and chemical control of Hydrocotyle ranunculoides in the U.K.
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Published source details
Newman J.R. & Dawson F.H. (1999) Ecology, distribution and chemical control of Hydrocotyle ranunculoides in the U.K.. Hydrobiologia, 415, 295-298.
Published source details Newman J.R. & Dawson F.H. (1999) Ecology, distribution and chemical control of Hydrocotyle ranunculoides in the U.K.. Hydrobiologia, 415, 295-298.
Actions
This study is summarised as evidence for the following.
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Floating pennywort: Chemical control using herbicides Action Link |
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Floating pennywort: Chemical control using herbicides
A controlled, replicated field experiment in 1997 in the Addlestone Bourne flood relief channel England, UK (Newman & Dawson 1999) found that the herbicide 2,4-D amine achieved near to 100% mortality, compared with the herbicide glyphosate which achieved negligible mortality. The chemical 2,4-D amine applied at 4.2 kg/ha achieved 76% decrease in floating pennywort Hydrocotyle ranunculoides biomass and almost 100% mortality over the first four weeks of treatment. In comparison, treatment with glyphosate applied at 2.2 kg/ha (without an adjuvant) resulted in a 20% decrease in biomass over the first four weeks and negligible mortality. Two trial plots in a 65m section of the channel were marked out and subdivided into six treatment blocks. Two blocks were sprayed in 2,4-D amine, two in glyphosate, and two were left untreated in control plots. Wet weight of root and shoot material/m2 was taken before treatment, and each week after treatment for four weeks following herbicide application. Percentage cover measurements were made each week until nine weeks after spraying.
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