Fertilizer application

I'm hoping that our local contractor will be applying fertilizer to our main field in the next few weeks, fingers crossed because he's not the most reliable (I think he must have some Latin blood in him ). My question is, would it be a good idea to follow the application with chain harrowing or a roller, or both, or neither? I've done a quick pass with the chain harrow a couple of days ago, which has knocked the worst of the lumps out and scratched through to the dirt quite a bit. Will this be sufficient to help the fert reach the soil quickly, assuming some rainfall to wash it in?

Bill.