A potato seed planting apparatus has: a frame configured to beadvanced over a subjacent field into which potato seed is planted at leastone container on the frame for a supply of potato seed and a plurality oflaterally spaced planting units on the frame. Each of the planting units isconfigured to cause potato seed from the at least one container to bedischarged to the subjacent field at controlled time intervals as the potatoseed planting apparatus is advanced in a travel path. First and second of theplanting units are configured so that the discharge time intervals for potatoseeds from the first planting unit are different than the discharge timeintervals for potato seeds from the second planting unit with the potato seedplanting apparatus advanced at a first speed in the travel path.