First we see the field is ploughed using a self-made deep plough, witch is capable of ploughing 120cm deep. The top layer of clay soil is ploughed under and the lighter sand and peat soil is brought to the surface to make the land more suitable for other crops and easier to work on. After ploughing the field needs to be leveled for improved water coverage and drainage using a BOS Combo-Dozer scraper. Wow never seen this deep plowing before ever!! I may of seen a short clip of it online a while back but your video was awesome! Still not sure what the advantage is but your doing it so it makes sense to you so that’s all that matters. No one here in Southern Manitoba, Canada even plowing anymore, let along deep plowing! Plows are pretty much given away at farm sales as no one whats them! We used to call that type of deep cutting, "sub soiling" because it breaks up the long compacted soil down much deeper than could a disc. I love that tractor.