Virginia Tech, Extension Service2019-11-082019-11-081945-03-23http://hdl.handle.net/10919/95383General surface condition of area tilled with duckfoot tiller 8" penetration. Medium clover sod.positive, 4 x 5 in.image/jpegIn CopyrightApplied ScienceAgricultureVirginia Extension - Project 10Agricultural EngineeringStubble MulchErosion ControlSoil and Water ConservationPhotographBiological Systems Engineering, Virginia Tech