1. A system for evaluating ears of maize, comprising: a picker adapted for picking ears of maize; an image sensor adapted to image the ears of maize after picking to provide digital imagery of the ears of maize; an image storage device which receives and stores the digital images from the image sensor; an image processing component adapted to process the digital images to electronically determine physical properties of the ears of maize; a sheller adapted for shelling the ears of maize; and a conveyor to convey the ears of maize from the picker to the sheller.