permaculture

[venaurafarm <venaurafarm@bellsouth.net>]

On 11/8/2012 2:54 PM, John D'hondt wrote:
> As far as I remember the major problem with tires is Zink (Zn) which has
> been added to the rubber. Plants are quite sensitive to soils with lots of
> zink in it and will show that dislike by growing poorly. I have never
> noticed that with tires so I assume that Zn leaching is not high. Zink is
> not bad for humans in concentrations higher than the tires release.
> However there is another problem. Even if the tire manufacturers would have
> wanted to put pure zink in their rubber this would have been difficult
> because it is nearly impossible to separate all cadmium out. Cadmium is very
> hard to separate from zink and that seems to even be the case in food
> supplement zink.
> Then again, if not much zink is leaching out then the amount of cadmium
> would probably be minute.
> I would never make soup from rubber tires but as long as the plants grown in
> them look good I would feel quite safe to use them. I think there are much
> worse dangers out there (like chemtrails maybe).

Quite the opposite. Chemtrails? Vaporized or volatilized fuels, other 
chemicals or pollutants. If this is so then they are a problem. 
Otherwise, John, read or reread my last post describing the problems 
associated with rubber in the environment. Using tires in a garden or 
especially food producing garden is totally out, i.e. forget it.
In fact I will repost it. LL