Grass to grass full spray off, you do need moisture, if the ground is hard as it is now you struggle to get the deep tilth as the tines bounce off, it does work fine with a pouched field as this helps create more tilth. We've modified a set of discs for the front linkage now to try to create a bit of extra tilth in hard conditions. Seed placement is far better than aitchison and the prism roller does a great job too.