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paper sludge and potatoes

Does anyone have more information about this??

Wisconsin researchers have begun testing the use of sludge from paper
mills in potato production.  Paper mill sludge in Wisconsin has
increased 5 percent annually.  About 70 percent is disposed in
landfills, but mills want to find better uses for the material.  If the
tests prove successful, the researchers plan to expand the experiment to
large-scale potato crops.

Margaret Nover
Pollution Prevention Program
City of Portland, Oregon
(503) 823-7623