Thats the reason for the spring tines. It lifted and broke the earth without chopping everything up. The reason I had so many dockers was because the first piece of equipment that I used to break up the heavy couch grass sod was a rotorvator. It was the only implement that penetrated the earth, various ploughs could not cope with the grass roots, including a single furrow Cat 1 strapped on the back of the 4 WD 1210 did not work. I started trying to plough up that field in September 10 and it was January 11 before the earth was turned over, only a borrowed rotorvator worked. Unfortunately the chopped up dockers spread and sprouted for fun. The land owner does not want pigs on there as we cannot be there 24/7 to watch them.
The beauty of the tine cultivator is that it does not chopp. Potatoes that we missed were lifted without damage, we got another 15kilo out. I noticed worms wriggling around that had not been 'mullard' by blades and the roots of dockers can be easily hand picked out of the earth. We pulled it through a nettle patch and the yellow nettle roots, something I regard as vicious, much worse than the leaves for stinging, were up side down waiting for the frost to kill 'em.