Drag harrow

It is a largely outdated piece of farm equipment, having been replaced by more modern disc harrows and hydraulically operated field cultivators.

It pulls up large rocks which may then be picked up manually and put in the tractor's stone box to remove from the field.

The drag harrow also kills some weeds that may be present, but it is not very efficient in doing so due to its highly flexible teeth, hence it is not one of its primary functions.

Another reason they are not often used is because they cannot be controlled hydraulically, meaning that the operator is required to dismount from the tractor to adjust it or unclog it.

Due to their low cost and simplicity, drag harrows are still used widely by small farmers.