User:Tmaull/sandbox
A planter is an agricultural farm implement towed behind a tractor, used for sowing crops through a field.[1][2] It is connected to the tractor with a draw-bar, or a three-point hitch. Planters lay the seed down in precise manner along rows. Seeds are distributed through devices called row units.<ref name = fin> The row units are spaced evenly along the planter.<ref name = fin> Planters vary greatly in size, from four rows to twenty. The space between the row units also vary greatly.<ref name = fin>