Virginia Tech, Extension Service2019-06-052019-06-051947-05-01http://hdl.handle.net/10919/89861Plot 20 (1947). Oliver TNT plow. 3" top cut. 4" bottom cut with sub base. Prior to final tillage.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