Seedbed preparation and sowing techniques play a key role in mulch sowing and soil management. Pottinger offers a choice of two soil preparation units for its Terrasem drill depending upon local soil and cropping conditions.
The disc harrow unit is comprised of angled 510mm diameter discs allowing for those wanting to incorporate larger amounts of harvest residue or green cover to a greater depth. Those wanting a shallow tilth on lighter soils where erosion is a problem should consider the rotary star harrow.

A combined press wheel and chassis unit is offered which achieves an even ground pressure across its working width. In work all press wheels are rigidly coupled to ensure a level seedbed. When turning at the headland this arrangement offers reduced ground pressure over those turning on single wheels ensuring damaging compaction is kept to a minimum.
For road transport the centre press wheels are lifted clear of the ground and only the two outer pairs of the wheels bear the weight of the machine. These wheels are braked either hydraulically or pneumatically allowing safe and fast transport.

The forming of a neat seed furrow clear of crop trash is particularly important. The serrated curved disc combined with a trailing clears the seed furrow for sowing. The angled mounting of the disc prevents soil from falling back into the furrow ensuring excellent even seed placement. Hydraulic coulter pressure allows the Terrasem to achieve coulter pressures of between 50 and 110 kg. Subsequently an even sowing depth is maintained even in the hardest of conditions.
The farm flex press wheels serve as combined depth and press wheels for the preceding disc coulters giving excellent seed to soil contact. These are followed by a heavy duty adjustable following harrow which produces a weatherproof finish helping combat soil erosion.
Even germination and growth is therefore achieved time after time.