Effect of Minimum Tillage on Soil and Water Conservation

Abstract

Minimum tillage may be defined as the least possible manipulation of the soil for satisfactory planting, germination, stands, growth and yields ofa crop.

Acceptance of this reduced tillage practice has been largely based on decreased cost of operation, although various other desirable features have been advanced. The concept of minimum tillage can be carried so far as to include plowing and planting in one operation. This assumes of course, that conditions are such that a good plowing job is possible.

Minimum tillage is desirable from the standpoint of erosion and run off control, because of large aggregates or clod size and decreased compaction. It may not be easy to define, achieve and maintain optimum physical conditions for crop production. From the standpoint of soil and water conservation, however it is known that dry, pulverized soils can be eroded by wind, and that over- worked or compacted soils. particularly those with a low degree of water stability to water erosion and drainage problems.