Re: Please answer my ignorant question about manure

In article <t96UHtA0kuVHFwpj@[EMAIL PROTECTED]
>,
Oz  <Oz@[EMAIL PROTECTED]
> wrote:
>
>2) Silica (if available) is toxic to plants.

Most plants grow in a substance called "dirt", which includes grains
of silica (SiO2) as a major constituent.  

Now, soils that consists of JUST silica, such as some beach sand, are not
particularly favorable to plants, but I think that has more to do with
what they lack that will the silica itself. 

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