Woody Plant Ontology AGROVOC Source
http://www.cropontology.org/rdf/CO_357:1000092 http://aims.fao.org/aos/agrovoc/c_5090 LOOM
http://www.cropontology.org/rdf/CO_357:Fertility http://aims.fao.org/aos/agrovoc/c_2862 LOOM