Department of Plant and Soil Sciences;
Oklahoma State University;
Stillwater;
OK 74078;
USA;
USDA-ARS;
Application Technology Research Unit;
University of Toledo MS#604;
Toledo;
OH 43606;
USA;
USDA-ARS;
Eastern Regional Research Center;
600 East Mermaid Lane;
Wyndmoor;
PA 19038;
USA;
USDA-ARS;
New England Plant;
Soil;
and Water Laboratory;
Orono;
ME 04469;
USA;
USDA-ARS;
Southern Regional Research Center;
1100 Robert E Lee Blvd.;
New Orleans;
LA 70124;
USA;
Phosphorus; Measurement; Soil; Test; Phosphorus; Modified; Morgan; Phosphorus; ICP; Molybdenum; Blue; Method;