Cass Peterson wrote:
>
> As for Question 2 (the use of sewage sludge in landscaping), I personally
> see no reason sewage sludge could not be appropriately used for some
> landscaping purposes, like highway median plantings, shopping center
> landscaping or golf course fairways.
I agree. However, many sewage sludge composts are high in heavy metals (such
as copper and lead) even from unindustrialized sources, and will often have a
"Lifetime loading rate," meaning that once that rate is applied, no more of
that particular soil amendment (or ones containing the same metal) can _ever_
be used on that soil.
Russ Bulluck
Visiting Post-Doctoral Fellow
Department of Plant Pathology
UC-Davis
Davis, CA 95616
lrbulluck@ucdavis.edu
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The soil population is so complex that it manifestly cannot
be dealt with as a whole with any detail by any one person,
and at the same time it plays so important a part in the soil
economy that it must be studied.
--Sir E. John Russell
The Micro-organisms of the Soil, 1923
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