The crop is buried

The forward speed is too high.

Reduce the forward speed. Maintain the optimal working speed according to the section Technical data, Forward speed.

The ridging discs are adjusted too aggressively.

Adjust the setting of the ridging discs, Adjusting the ridging discs.

There are no active hoe protection discs.

Activate the hoe protection discs, Activating or deactivating the hoe protection discs HSZ or Activating and adjusting the height of RowDisc hoe protection discs.
Check the adjustment of the hoe protection discs. Adjust the setting if necessary, Adjusting the hoe protection discs HSZ or Adjusting the RowDisc hoe protection discs.