About: http://webisa.webdatacommons.org/16897029

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In order to bond the nitrate from urea with Hs, the process needs cation, i.e. calcium to bridge functional humic group and ion nitrate.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com