Right, but my question is why do they have to be replanted? Certainly
willows are much longer lived, in the
wild, just as are other tree/shrubs, even the smaller bushy ones. Is it a
matter of soil depletion? It just
seems a bit odd -- and that site says nothing about it. I'll have to look
around, I know I was on another site
awhile back that was about the same thing, had some pictures of equipment
converted to harvest small woody
plants, which is what I was interested in.
On Wed, Feb 27, 2002 at 01:19:01PM -0500, Appal Energy wrote:
> Harmon,
>
> "Coppiced" refers to the tri-annual cutting back ("pruning" if you will) of
> willow. One year to first cut, where the "pruned" material is cold stored as
> "cloned" stemstock. Two to three more years to first harvest maturity. An
> approximate 22 year rotation, complete with 6-7 harvests before a new
> planting.
>
> Poplar has been studied under similar circumstances.
>
> I hazard to suggest that the primary intent of willow and poplar for such a
> crop is to achieve high yields with a short turnaround time. As well, the
> small diameter stalk makes harvest comparably easy with equipment already
> existing on many farms.
>
> I have no familiarity with aspen other than checking them for signs of bear
> and enjoying their leaves as the rustle.
>
> Were aspen to produce equivalent energy yields over time, I believe it would
> be prudent to begin planting them as well.
>
> Todd Swearingen
> ----- Original Message -----
> From: Harmon Seaver
> To: biofuel@yahoogroups.com
> Sent: Wednesday, February 27, 2002 12:08 PM
> Subject: Re: Coppice Willow & Hardwoods Part Dieu was Re: [biofuel] Re:
> Cornburning Stoves
>
>
> I notice that one the willow site it says that "the duration a
> typical rotation - about 22 years" which I take to mean that then they
> have to be replanted? Any idea why that is? And perhaps then aspen would
> be better, since the group is usually all one organism and lives for
> centuries, and can be coppiced in the same manner.
>
>
> Harmon Seaver
> CyberShamanix
> http://www.cybershamanix.com
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Harmon Seaver
CyberShamanix
http://www.cybershamanix.com
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