Fast growing plant for biogas or biomass?

[Christophe]

Our knotweed is now 1,80 to 1,90m.

Roughly the size before cutting ... What do I do this time?

I put everything in a bottle in the sun?

[Woodcutter]

: Mrgreen:

Be careful with this bastard .... it is really very harmful and see impossible to get rid of it ... do some research on the net and you will quickly understand what you are dealing with ....
Otherwise in culture, if you receive permission, I think it must be interesting .... it grows mega fast and it does not die or very difficult. I do not think that the value of the plant is very interesting in terms of mass / volume / energy yield ... To see!

Good luck.

Totally agree, it's really a real filth, with some others like the jussies for the rivers, or the Phytolaque which invades my beautiful forest of Fontainebleau ...
Next door, Alien is rupee de sansonnet ...
Otherwise, one of the only interests of this plant is precisely its very high productivity (up to 16 tonnes of DM / ha / year) but given its aggressiveness, I dare not imagine what would happen if we began to cultivate it on a large scale!

[Woodcutter]

Our knotweed is now 1,80 to 1,90m.

Roughly the size before cutting ... What do I do this time?

I put everything in a bottle in the sun?

One of the big problems of the Knotweed: it has an underground reserve organ, which means that you can cut it many times in succession before exhausting it.
Furthermore, it can enter a sort of "dormancy" phase and no longer appear for a period of up to 10 years.
Finally, if you export soil from your garden, you export the Knotweeds at the same time because each fragment of rhizome '"cut" (by a blow with a spade for example) will give a new foot ...

Do you see the problem?

[Christophe]

Ben to make compost or biogas is rather advantages all these disadvantages right?

ps: oops not seen your penultimate message on this subject ... 16 Tons of MS anyway Where did you get that number?

[Woodcutter]

[..] ps: oops not seen your penultimate message on this subject ... 16 Tons of MS anyway Where did you get that number?

In a conference on knotweed which I attended in 2002.

Benefits?
As long as you keep her "on a leash", yes ...
But you know as well as I do that it's impossible.

[Christophe]

Benefits?

Well done for ... BIOGAS

[Woodcutter]

Do you want more, characteristics on this lovable plant?

It happens to TOTALLY make other plants disappear where it grows (and believe me, it's quite a performance) and concerning animals, entomological studies have shown a 95% decrease in biodiversity (in Coleptera) in knotweed beds.

Already naturalists consider the areas of cultures as "biological deserts", there it is squarely the interstellar void ...

The only real advantage is its high photosynthetic productivity, but it's really the only ...