Purifying phosphorus When phosphorus is mined out of the ground, it is in the form of phosphate, a mineral whose basic unit comprises one atom of phosphorus bound to four oxygen atoms. About 95 ...

Phosphorus (P) is a key plant nutrient. Only nitrogen and potassium are required in higher amounts by crops. High soil test phosphorus fields are a looming environmental threat to surface water.

The Chesapeake Bay Program notes its Water Quality Standards Attainment and Monitoring Outcome remains on course as it ...