Virginia Tech, Extension Service2019-06-052019-06-051947-04-15http://hdl.handle.net/10919/89860Walking plow with sweep sub base attached for plant mark.positive, 4 x 5 in.image/jpegIn CopyrightApplied ScienceAgricultureVirginia Extension - Project 10TillageErosion ControlSoil and Water ConservationApplied ScienceAgricultureAgricultural EngineeringVirginia Extension - Project 10TillageErosion ControlSoil and Water ConservationPhotographBiological Systems Engineering, Virginia Tech