We often run a flexible harrow to break up & scatter the manure. This spring I ran a rotary hoe (first time ever) on some pastures...which also broke up some of the manure, though not quite as much.

The reason I ran it is that some of the areas I overseeded had ungrazed old growth that had lodged and laid down sort of thick in places. I was concerned that some of the clover seed was laying on top of the lodged grass tops and might germinate there...with no soil contact, and would die.

The rotary hoe worked surprisingly well (Hiniker 700). I figured it might block up with dry grass; if the grass were much heavier in those spots it might have.

Another nice thing is that I could run the hoe at around 8 mph. My pasture harrow is old (dull teeth) and if I run it that fast it jumps over a lot of patties and doesn't break them up as well.