University of Manitoba researchers are hoping to kill two birds with one kidney stone by mining manure
Struvite is a naturally occurring mineral that forms kidney stones, says Dr. Don Flaten, soil scientist. The mineral, which can be made from hog manure, is also a phosphate source which is less water-soluble than commercial phosphate fertilizers. Regular phosphorus fertilizers dissolve quickly, leaving high salt concentrations, which can kill seedlings if too much fertilizer […] Read more