Floating pennywort: Use of hydrogen peroxide

How is the evidence assessed?
  • Effectiveness
    10%
  • Certainty
    60%
  • Harms
    not assessed

Source countries

Key messages

  • A controlled, replicated pilot study in The Netherlands, found that hydrogen peroxide sprayed on potted floating pennywort plants resulted in curling and transparency of the leaves when applied at the highest tested concentration (30%), but this was still not sufficient to kill the plant.

 

About key messages

Key messages provide a descriptive index to studies we have found that test this intervention.

Studies are not directly comparable or of equal value. When making decisions based on this evidence, you should consider factors such as study size, study design, reported metrics and relevance of the study to your situation, rather than simply counting the number of studies that support a particular interpretation.

Supporting evidence from individual studies

  1. A controlled, replicated experiment in 2010 in greenhouses at Plant Research International in Wageningen, The Netherlands (Joost van der Burg 2010) found that hydrogen peroxide sprayed on potted floating pennywort Hydrocotyle ranunculoides plants resulted in curling and transparency of the leaves when applied at the highest tested concentration (30%), but this was still not sufficient to kill the plant.  Leaf transparency and curling was visible after three hours.  A 10% concentration also had clear effect but killed few of the leaves, with about half of the leaf surfaces affected.  Lower concentrations had little effect.  Stolones and shoot tips, though all above ground, were not affected in any treatment. The roots were immersed in the mud and not affected either. The higher concentrations (10% and 30%) were reported to be hazardous to people who carry out the spraying.  Test plants were newly grown cuttings 22 days old.  Five treatments were chosen: 0, 0.3, 3, 10 and 30% hydrogen peroxide in water with four replications.

    Study and other actions tested
Please cite as:

Aldridge, D., Ockendon, N., Rocha, R., Smith, R.K. & Sutherland, W.J. (2020) Some Aspects of Control of Freshwater Invasive Species. Pages 555-87 in: W.J. Sutherland, L.V. Dicks, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2020. Open Book Publishers, Cambridge, UK.

Where has this evidence come from?

List of journals searched by synopsis

All the journals searched for all synopses

Control of Freshwater Invasive Species

This Action forms part of the Action Synopsis:

Control of Freshwater Invasive Species
Control of Freshwater Invasive Species

Control of Freshwater Invasive Species - Published 2017

Control of Freshwater Invasive Species Synopsis

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