Using crop residues for soil defense. (open access)

Using crop residues for soil defense.

Describes how leaving crop residue in a field can help prevent soil erosion due to rainfall; and describes the equipment that can be used in this practice.
Date: August 1942
Creator: Duley, F. L. & Russel, J. C.
System: The UNT Digital Library
New landmarks of soil conservation. (open access)

New landmarks of soil conservation.

Discusses various methods for protecting and conserving soil.
Date: 1942
Creator: United States. Soil Conservation Service.
System: The UNT Digital Library