The greater retention of crop residues in the surface soil under
minimum tillage with the use of chisel plough can increase surface
soil organic matter, and soil structural stability and biological
activity comparatively with the mouldboard ploughing (Carter,
1992). Over time, such increases coupled with differences in
degree of organic matter incorporation could influence the
distribution and storage of carbon and nitrogen in the soil. Cassava
produces best on loose soil which encourages soil oxygen, prevent
root rot and improve yield. The crop requires good soil preparation
and adequate measures for erosion control