Plough is a moveablefarming device for initial cultivation of soil in preparation for sowing seed or planting. It Plows the soil instantly.
Tip: To plough a square make sure you are moving through the middle of a tile of ground and not the edges. This can cause the plough to "miss" a square and not plough it. A good tip to making sure you are going through the center of a square is to hold down the right mouse button so that it outlines the square in front of you, then you can see your trajectory from the outline and your current direction.