Abstract: An adjustable crop thinning device configured for mounting on an attachment frame for pulling behind an agricultural vehicle such as a tractor in a field of row crops. The attachment frame is oriented generally transverse to the direction of motion of the tractor, and comprises a plurality of generally upright rotating hubs disposed upon its rearward portion. Each hub has a plurality of elongate sweeps extending radially therefrom, each sweep having an elongate axis and a substantially planar end blade, and being configured to contact the ground with the end blade, such that the hub will rotate as the frame is pulled across the ground. The end blades are selectively rotatable about their elongate axes, whereby the aspect of their sweep through a row of crops may be adjusted. The rotating hubs are also angularly adjustable, being connected to the frame by a pivot mechanism allowing vertical and/or horizontal rotation of the orientation of the plane of the hub relative to the direction of motion of the machine.

Abstract: A direct harvester includes a cutting portion, a lifting portion and a feeding portion. The cutting portion typically includes a cutter rod for severing plant roots and a kicker rod for encouraging the plant to the soil surface. The lifting portion typically includes a rotating pickup head for lifting the plants off the soil and separating the plant from the soil, and a pair of rotating tubes to move the plants and encourage further separation of soil from the plants. The feeding portion includes an auger which receives the plants from the rotating tubes and channels the plants into the opening of a combine feeder housing. Preferably, the floor below the auger is screened to allow soil which is knocked free by the auger to fall back to the ground. Additionally the lifting portion and the feeding portion are preferably pivotably attached to one another to enable the harvester to adapt to differing contours in the soil.