The chisel plough

The chisel plough is a tool with rigid curved or straight shanks that has relatively narrow shovel points. It shatters the soil without the complete mixing of surface materials. Multiple rows of staggered curved shanks are mounted either rigidly with spring-cushions or spring resets. The chisel plough maybe termed as a heavy-duty deep cultivator. Interchangeable sweep or any of the other types of points is attached to the standard. The spring-cushions or spring resets permits the ground tool to swing back and up and to unlock the point at which it strikes an obstacle.

The chisel plough is often used to loosen hard, dry soils before the regular plough is used. It is useful for stubble-mulch or subsurface tillage practices and breaking up of hard layers of soils just below the regular plough depth.