Knotweed trials

[veggiechicken]

Knotweed 'cannot be eradicated', Swansea Uni trial shows - BBC News

If you have knotweed...............

[Small pumpkin]

You're just full of good news
We do have it in a few places on the island. But luckily not on my tiny bit of it.
It's horrible stuff.

[1Bee]

Bl**dy hŁll.

[Aberdeenplotter]

Interesting but they have based their conclusions using Glyphosate on using a weak solution. I get that they are concerned that there are concerns about Glyphosate but trying it at reduced strength with a bully like japanese knotwood is bonkers.

They also don't say whether they sprayed it or injected it into the roots which I understand is the best way to use it on knotweed.

[veggiechicken]

Another report f the study at https://www.hortweek.com/japanese-kn...ticle/1463077o

[Kirk]

Read the artical a while back and noticed they used a weak/dilute solution of glyphosphate.
It is unfortunately going to be a case of if you want it dead then as the old saying goes you kill it with extreme prejudice.

Giving it a stern talking to is not going to do anything. Quick search of Hortweek shows that places are talking about "effective management" and "control" of it. There likely is no control or management of it that could be evenly reomtely considered "organic" So effective or otherwise control is likely to incorporate an awful lot of chemical usage, petrol and other unsavory things. Oh yes and money.

In one report someone has taken Rail Track to court and won as they left the knotweed to grow and his house is now unsellable. In that respect a precident is set and councils that do little may find themselves liable for the cost of effected houses.

[bramble]

How strange.
Part of our Irish nationwide programme tonight was about Japanese knotweed on the east coast of Ireland.
They were spraying it with herbicide but didnt say how effective it proved to be.
I dont think enough people know what it even looks like.

[Chestnut]

Like this- unfortunately some clumps on our allotment site...

[veggiechicken]

Interesting site that records locations of invasive plants Distribution of Japanese Knotweed reports | Plant Tracker

[Jungle Jane]

Quick search of Hortweek shows that places are talking about "effective management" and "control" of it. There likely is no control or management of it that could be evenly remotely considered "organic" So effective or otherwise control is likely to incorporate an awful lot of chemical usage, petrol and other unsavory things. Oh yes and money.

They’ve been releasing a psyllid ‘Aphalara itadori‘ in secret locations across the UK,a Japanese natural pest of the knotweed there’s a bit about it here -

“So far a five-year monitoring plan has found A. itadori does inhibit the growth of the knotweed and poses no risk to native species”.
https://www.hortweek.com/knotweed-ea...rticle/1366288

[Vince G]

Bramble, get yourself down to the Dáil and stand outside with a bloody great placard saying "Rid Ireland of Japanese Knotweed". Write to Mr Varadkar, write to whoever is the Minister for the Environment, write to your TD... Before it's too late and your island ends up blighted by it like we are parts in Britain. If it's still only on the east coast you stand a chance.

[lottieguy]

Hi Ya, I hope that the flowering in your photo Chesnut isn't knotweed, does it flower?