the world > food and drink > farming > cultivation or tillage > breaking up land > break up land [verb (transitive)] > break up clods (3)
transitive. To free (land) from clods by harrowing, rolling, or the like. Also absol. Obsolete.
transitive. To free (lands) from clods; absol. to crush clods. dialect in later use. Cf. clod, v.
To convert (a substance) into a different state or form. transitive. Without construction: to break up (soil) into fine particles. Now chiefly U.S.