of seed to be sown and the rate at which the seeds are to be sown. The tooth size (actually the size of the space between the teeth) is just big enough to allow one seed in at a time but not big enough for two. Modern planters often have a large bin for seeds that are distributed to each row known as central commodity systems.

A class of planters that dig down farther than others are called listers. They are not used much any more, as their use belonged to a set of high-till methods that low-till and no-till