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last update:Aug 21, 2006
Environmental effects of minerals
When speaking of manure management, most attention is given to nitrogen and
phosphorus. However, copper (Cu) and zinc (Zn) can also cause problems for the
environment.
This article can also be found in Pig Progress Volume 21 number 8. To view
the article online simply click on the link below.
Pig Progress, volume 23, no.6 2007
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