#$%^&*AU2020210284A120200820.pdf#####APPARATUS, SYSTEM AND METHOD FOR MONITORING SOIL CRITERIA DURING TILLAGE OPERATIONS AND CONTROL OF TILLAGE TOOLS ABSTRACT A tillage implement comprising: a frame operably supporting tillage tools; and a soil monitoring system comprising at least one ground-penetrating radar operably supported from the frame and disposed to detect surface residue criteria before, after, or before and after soil is tilled by the tillage tools.