Effect of Weight and Draught on the Performance of Disc Plough on Sandy-loam Soil

In this research, the relationship between depth of cut, increase in weight of disc plough as well asthe draught has been investigated using dimensional analysis on a sandy loam soil. The experiment wasconducted on a site with three different moisture contents level at five different speeds (0.83, 1.39, 1.94, 2.5and 2.78 m sˉ1). It was observed that the depth of penetration increase with an increase in draught and increasein soil moisture content. From the site, the depth of cut was minimum at 4.9% and maximum at 9.4% moisturecontent. The result obtained from the validation shows that the model can be used effectively to determine thedepth of cut in sandy loam soil and also the draught-speed relationship obtained from this work can be usedto predict the power requirement of the disc plough in other soil types. The draught increase linearly with thedepth of cut as predicted from the model. The result of the soil properties after tillage showed increase withshear strength, bulk density and depth.