RE: Alternative Wood Preservatives
Lon J. Rombough (email@example.com)
Thu, 09 Apr 1998 19:49:29 -0700
> One alternative is to use posts of black locust wood (Robinia
> pseudoacacia). It is reported to last as much as 20 years in the ground
> and was highly prized for fences in colonial times when treated wood
> didn't exist. I can't verify that, but a friend with a vineyard has
> black locust posts and they still look fine after about 10 years. Black
> locust is a fast growing tree which fixes nitrogen, provides nectar for
> bees, re-sprouts from the stump when cut, and makes excellent
> fast-curing firewood. It can also get to be a weed and the young trees
> and shoots are thorny.
> -Lon Rombough
> > My name is Dave Jackson, and I am the proprietor of an 11 acre hardy
> > kiwi research, development, and extension site which supports trials of 52
> > cultivars and arbors 3000 vines.
> > The multi-cultivars are trialed for micro-climate adaptation,
> > hybridization and are evaluated for viability, productivity, and
> > marketability.
> > The arbor is a T-bar design consisting of 8 foot, 8 inch circumference
> > CCA (chromated copper arsenate) driven tie backs and line posts.
> > CCA posts fit the requirements of hardy kiwi in uniformity, strength,
> > and endurance but not for that of "organic" hardy kiwi.
> > I have been told of three alternatives to CCA, those named are:
> > (ACQ) ammoniacal copper quartenary
> > copper azole
> > copper citrate
> > My question is how do these alternatives to CCA fair with the Organic
> > Standards and are there any other alternatives to be considered?
> > Thank you.
> > Dave Jackson
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