Virginia Tech, Extension Service2019-06-052019-06-051947-05-01http://hdl.handle.net/10919/89826Close-up of residue on Plot 9 (1947). Roto Tiller plot. Note exposure of roots and separation of soil from root mass.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