Abstract
Increased conventional tillage of farming operations has increased soil compaction. The objective of this study was to model the effects of soil compaction on draft force of sub soiling silt loam soils using dimensional analysis. A factorial experiment in a Completely Randomized Block design was used in the study. Experiments were conducted on 18 plots to investigate the effect of five-wheel pass (1, 2, 3, 4. 5) and control treatments on soil mechanico-physical properties at 0 - 20, 20 - 20 and 30 - 40 cm depths with three replications. The data obtained from the experiments were subjected to analysis of variance and the student t-test. Dimensional analysis was investigated for its draft prediction accuracy. It was concluded that the prediction ability of the model was satisfactory since its R2 value and RMSE were 0.8722 and 2.256 kN respectively.
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