Crop residue phosphorus: speciation and potential bio-availability Noack, Sarah R. ; McLaughlin, Mike J. ; Smernik, Ronald J. ; McBeath, Therese M. ; Armstrong, Roger D. Abstract Publication: Plant and Soil Pub Date: October 2012 DOI: 10.1007/s11104-012-1216-5 Bibcode: 2012PlSoi.359..375N