Alternative Wood Preservatives
Fri, 10 Apr 1998 15:13:09 -0500
; 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;
; 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?
Two other woods are Bois De'arc( Osage Orange) and catlapa I am
not sure of the spelling of either. Osage Orange heart wood last for ever.
After it is aged you will have to drill holes for fasteners.
In my part of the world steel is about the same cost as wood post and
a lot less expensive to install.
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