GYPSUM FARMLAND POLLUTION PREVENTION RESEARCH USA
July 1st, 2006
BY MONICA DOBIE
SCIENTISTS from the Agricultural Research Service (ARS) in the USA have determined that the mineral gypsum is very effective soil additive for curbing run-off of phosphorus from farm fields into water supplies.
Their work could give additional value to gypsum, one of the more common minerals often in massive beds. It is also a by-product of coal-burning operations.
The study, performed in Texas by ARS Scientists David Brauer, Glen Aiken and Daniel Pote, compared how well gypsum, alum and ground-up wastepaper kept phosphorus from leaching from ...
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