Virginia Tech, Extension Service2019-06-052019-06-051947-05-01http://hdl.handle.net/10919/89828Plot 9 (1947). General view of Roto tiller plot. Machine in background. Tilled twice 2" plus 2". Note residue on surface. Ben Brown operating.positive, 4 x 5 in.image/jpegIn CopyrightApplied ScienceAgricultureVirginia Extension - Project 10Stubble MulchErosion ControlSoil and Water ConservationApplied ScienceAgricultureAgricultural EngineeringVirginia Extension - Project 10Stubble MulchErosion ControlSoil and Water ConservationPhotographBiological Systems Engineering, Virginia Tech