About: http://webisa.webdatacommons.org/428267003

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	Also, adding organic material or other soil conditioners, such as sand and perlite, may be helpful in some instances.
http://www.w3.org/ns/prov#wasQuotedFrom	vt.edu