A crop treatment apparatus is capable of irradiating plant products harvested from beneath the surface of the ground to prevent sprouting, regrowth, and/or decay of the plant products and/or contamination of the plant products by one or more microorganisms. The crop treatment apparatus may include shielding and a conveyor system. The conveyor system may direct the plant products past an irradiation element and then directly into storage or packaging. Embodiments of crop treatment apparatuses that are capable of treating plant products as they are harvested or prior to harvesting the plant products from the ground are also disclosed.
