Deep reduced tillage
Deep tillage with a cultivator is often used on light soils that require loosening:
- when large amounts of harvest residues have to be mixed into the soil
- before compaction-sensitive crops such as oilseeds, peas and sugar beet
- when wheel tracks and compaction damage need to be repaired
Deep tillage gives a coarser finish than shallow cultivation, so several passes can be required on heavy soils.
When deep cultivation is carried out within the same depth range as conventional ploughing (10-15cm or deeper), the costs and fuel consumption per hectare are relatively high, approaching those of ploughed systems in many cases. The most important factor in favour of deep reduced tillage compared with ploughing is the considerably higher capacity per hour. The decreased risk of erosion and crusting as a result of the straw residues on the surface is another advantage.