PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Data, including grain yield, soil water, soil and crop nutrients, were used from long-term field trials at Pendleton, OR and Ralston, WA. Field-measured values of soil profile water content, crop residue mass, soil profile nitrate, bulk density, and soil organic matter content were used as initial conditions for model simulations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usda.gov