Chinese Inventions: Moldboard Plow

Keren and Sebastian

China, Third Centrury . Called Kuan, these ploughshares were made of malleable cast iron. They had an advanced design, with a central ridge ending in a sharp point to cut the soil and wings which sloped gently up towards the center to throw the soil off the plow and reduce friction.
Moldboard Plowing with a Quadtrac 435
The moldboard plow helps by cutting he soil and being able to make them faster than digging wholes for each seed that is going to be planted.