Rhizome Viability Testing

One of the difficulties with clearing a site of Japanese knotweed is verifying that a herbicidal programme has worked.

In many instances, the plant appears to be dead with leaves, stems and crowns clearly dying. To even the expert eye, the rhizome may look dead as well, but in fact if the herbicide hasn’t translocated through its entirety, new plants will emerge within a year or two from either dormant or partially alive fragments.

TCM wanted to be able to give our customers definitive answers about the effectiveness of any herbicide programme that had been undertaken. We obtained government funding via a Knowledge Transfer Partnership (KTP) with Writtle College and along with our visiting researcher based at University of Bath, three types of viability tests were developed and are available commercially.

Whilst 75% or rhizomes can be assessed using the On-Site RV20 test, some need to be referred for further testing with our RV24 tests. These will give a 99.9% positive or negative answer about rhizome viability.

Contact us for more information about how to use these innovative services to confirm that your site is clear of Japanese knotweed.

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Sq Mt Cleared

  • We are experts in removing japanese knotweed
    through proven scientific methods.

    We are experts in removing japanese knotweed through proven scientific methods.