Following on from the comments regarding erratic levels of
control. I live in a village in South Cambs area. On the road out
of my village there are a couple of fairly well established JK
stands, which I have been photographing in order to educate
colleagues at work about the growing cycle and rate of JK.
Last month the verges of the road were cut by contractors working for
South Cambs Highways and they merrily cut down the JK stands, which
are now happily regrowing over a larger area having been spread by
the cutting operation.
Until a systematic approach by all is developed to JK, including
Councils themselves, we won't go far in ridding ourselves of this weed.
Yours
Peter Hewitt
At 15:42 24/7/08, you wrote:
>Adam
>
>Interestingly I attended a meeting with Scottish Government
>representatives a few years ago on invasive aliens - the general
>impression they gave was that JKW was such a widespread and endemic
>problem that it was beyond an adequate control regime.
>
>In my experience local authority promoted treatments tend to be erratic
>and incomplete, but there is a growing awareness among land managers of
>the problem. At present I am involved in a complex process of annually
>reminding our estate manager to spray a stand of JKW on a site adjacent
>to a landfill restoration completed 3 years ago - very frustrating
>(invasion of the weed could undermine the cap)
>
>Anthony
>
>-----Original Message-----
>From: Contaminated Land Management Discussion List
>[mailto:[log in to unmask]] On Behalf Of Adam
>Czarnecki
>Sent: 24 July 2008 14:07
>To: [log in to unmask]
>Subject: Re: Japanese Knotweed.
>
>Ok lets have a poll...how many local authorities actively manage or
>eradicate invasive plants such as Japanese Knotweed, on their own land.
>
>
>
>
>
>
>
>
>--
>Adam Czarnecki
>Divisional Director
>Clancy Consulting Ltd.
>Dunham Court
>2, Dunham Road
>Altrincham
>Cheshire
>WA14 4NX
>
>Tel: 0161 613 6000
>Fax: 0161 613 6099
>
>Clancy Consulting Ltd.
>Registered Office: 2 Dunham Road, Altrincham, Cheshire, WA14 4NX
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>-----Original Message-----
>From: Contaminated Land Management Discussion List
>[mailto:[log in to unmask]] On Behalf Of Colin
>Crompton
>Sent: 24 July 2008 13:45
>To: [log in to unmask]
>Subject: Re: Japanese Knotweed.
>
>
>Clare
>
>If the Japanese Knotweed has been sprayed once or twice in the past and
>there is no re-growth then it is more than likely that the Japanese
>Knotweed will begin to re-grow next year.
>
>The Developer / Sub-contractor carrying out the work should have put in
>place a "Management Plan" to deal with the Japanese Knotweed. Most
>Local Authorities issue a planning condition relating to Japanese
>Knotweed Management Plans being agreed prior to commencement, therefore
>it might be worth checking if such a condition exists, and then checking
>if the developer / sub contractor has or is fulfilling his obligation.
>
> From a practical point of view, the area should receive a 3 to 4 year
>spraying and monitoring plan in accordance with the Environment Agency
>guidance and regulations, particularly the WQM1 application for spraying
>near water. Even if there is no further re-growth this year it does not
>mean the problem has gone away.
>
>We have a subsidiary company that specialises in Japanese Knotweed
>advice and treatment, if you need more information give them a call on
>0161 763 7200 (Conor Leyden)
>
>Regards
>
>Colin Crompton
>Leyden Kirby Associates Ltd
>-----Original Message-----
>From: Contaminated Land Management Discussion List
>[mailto:[log in to unmask]] On Behalf Of Clare
>Horton
>Sent: 24 July 2008 12:22
>To: [log in to unmask]
>Subject: Japanese Knotweed.
>
>Hello everyone,
>
>a Consultant has said, 'treatment of JKW strands has already been
>undertaken, but the potential for re-growth remains. If any strands are
>identified within Planning boundaries on-site during the earthworks,
>then the Contractor shall undertake further treatment'.
>
>My problem is that the JKW is extremely prominent in areas at river's
>edge and adjacent to the housing development site. Although initial
>treatment may appear to have removed 'strands' of JKW, if an on-going
>programme of eradication is not undertaken throughout development and
>after, then the adjacent/ close by JKW 'strands' will (re)-invade the
>site and could cause damage to property or services.
>
>Should I be asking for long-term monitoring and treatment as part of
>development, or is the Developer only obliged to show apparent
>eradication at the point of development and sale?
>
>Many thanks,
>
>Clare
>
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