A multi-section, foldable land plane is foldable between a relatively narrow, transportable position, and a wider, deployed position for leveling field irregularities. A central, wheeled frame is adapted to be drawn by a conventional tractor. The frame, constructed of a network of tubular steel members, supports a pair of lateral wings which can be selectively folded and unfolded over the central frame. Folding of the wings is controlled by a system of hydraulic cylinders. The hydraulic cylinders are coupled to pivotal cam arms that control upward and outward rotation of the wings relative to the frame. A deflection compensation system insures proper wing movement during movements. An automatically actuated locking system prevents undesired deflection of the wings during operation. The locking system is activated by a second pair of hydraulic cylinders that control a master locking position that is linked to remote, slave locking positions by an elongated synchronizer. A plurality of rigid plane blades cooperate to define a soil flow pathway beneath the frame. Each of the blades is independently adjustable for height and pre-tension, accommodating the condition of the field. Soil scraped from elevated areas is channeled backwards along the blades and subsequently deposited into depressed areas of the field and compacted by the blades.