METHOD AND APPARATUS FOR AUTOMATICALLY MAINTAINING SEED TRENCH DEPTH DURING SEED PLANTING OPERATIONS

摘要

A planting unit is provided having a seed trench opener that forms a seed trench in a ground surface as the planting unit travels along the ground. A depth regulating member is provided that has a predetermined vertical position relative to the opener. The depth regulating member is operable to ride along the ground and thus predetermine d the seed trench depth. A down pressure assembly is provided that maintains the depth regulating member in proper engagement with the ground.