Agrology (from Greek ἀγρός, agros, "field, tilled land"; and -λογία, -logia) is the branch of soil science dealing with the production of crops. The use of the term is most active in Canada. Use of the term outside Canada is sporadic but significant. The term appears especially well established in Russia and China, with agrologists on university faculty lists and agrology curricula. Agrology is synonymous with agricultural science when used in Canada, is nearly synonymous with the U.S. term agronomy, and has a meaning related to agricultural soil science when used outside Canada.