In the field between the castle and the mill. A farmer will give you a bag.
Go to the guy in the green hood. Talk to him. He will give you the manure.
The manure is for an spaceship in the attic of the Ye Olde Rumour Mille.
One of the farmers gives you some manure.
The hovercraft runs on manure.
You can get a bag of manure (but just one) at the farm near the Mill.
you get the manure from the boy right by the girl on ASTRO KNIGHTS ISLAND
The hover board (hovercraft) runs on manure.
The manure is used to power the hovercraft hidden in the attic of the mill. (see related question)
yu dont yu get manure and use it tu get accross
put the manure that i dude gives you in it.
You go to your right from the castle. When you come to a boy with spots on his face he will give you some manure. (He is just left of the mill.)
When you cross the farm in the mill area, the farmer will give you a bag (but only once).