Agricultural implements including a rockshaft, and related methods and control systems

A method of operating an agricultural implement, the method comprising:

• traversing an agricultural field with an agricultural implement comprising:
• a frame;
• a toolbar coupled to the frame and carrying a plurality of row units, the toolbar comprising a center toolbar and wing toolbars;
• and
• a plurality of wheel units laterally between neighboring row units, each wheel unit comprising a wheel;
• and
• causing a rockshaft operably coupled to the plurality of wheel units to rotate to lift or lower the wheels of the plurality of wheel units in unison.

A control system for an agricultural machine, the control system comprising:

• at least one processor;
• and
• at least one non-transitory computer-readable storage medium storing instructions thereon that, when executed by the at least one processor, cause the control system to:
• cause a rockshaft operably coupled to a plurality of wheel units coupled to a center toolbar to rotate in a first direction to lift wheels of the plurality of wheel units in unison and lower row units coupled to the center toolbar relative to the center toolbar, at least one of the wheel units laterally between neighboring row units;
• and
• cause the rockshaft to rotate in a second direction to lower the wheels of the plurality of wheel units in unison and lift the row units coupled to the center toolbar relative to the center toolbar.