Effect of Axle Load Distribution in Tractor-machine Outfits on Soil Compaction in the Arable Layer

The investigations aimed at determination of the effect of soil compacting action of the wheels of agricultural vehicles of similar weights, but different number of axles, as well as the sequence of applied pressures on soil compaction.Investigations were carried out under field conditions on light soil, compacted with the use of vehicles of different weight distribution between particular axles and different number of axles.Soil compaction and density were measured within the track of passes in the layer 0 -30 cm.Different weight and its distribution significantly increased soil density and compaction when compared to the initial state, while differences between particular vehicles were statistically insignificant.The highest soil compaction was found in layers to a depth 12.5 cm.The trailed outfit caused higher soil bulk density and soil compaction than mounted outfit of the same total weight.