The Extensible Observation Ontology Brassica Ontology Source
http://ecoinformatics.org/oboe/oboe.1.2/oboe-core.owl#Measurement http://www.cropontology.org/rdf/Measurement LOOM
http://ecoinformatics.org/oboe/oboe.1.2/oboe-characteristics.owl#Time http://www.cropontology.org/rdf/Time LOOM