About: http://webisa.webdatacommons.org/340830875

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	Measurements have shown that significant variability exits within fields for such parameters as soil moisture, water holding capacity, soil nutrients, soil pH, claypan characteristics, crop growth, and crop yields.
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov