Packer wheel assembly
Packer wheel assembly for tillage apparatus
Paired row furrow opener
Parallel link trailing arm for seeders
Parallel linkage planter carrier
Particulate feeder system
Particulate material dispenser
Pelletized material depositing tool
Perennial weed control by deep placement of volatile soil fumiga
Picker assembly for potato planter
Pivot assembly for planter closing wheel frame
Pivot assembly for planter closing wheel frame
Pivoting arm for seeders
Pivoting planting units vertically
Pivoting spring-cushioned press wheel gang assembly
Plant cultivation devices and methods
Plant feeder apparatus
Plant hole digger with cylindrical cutter
Plant protection system
Plant seedling holding and dispensing mechanism