The secretary of agriculture shall supervise performance of all duties incident to the enforcement of this act, and acts amendatory thereof and supplemental thereto, and shall have the authority to inspect all premises to ascertain the presence of any of the prohibited plants and to destroy any and all such plants in accordance with the terms and provisions of Kan. Stat. Ann. § 2-702, and amendments thereto, and they are further authorized and empowered to intercept, condemn or return to an out-of-state shipper at the shipper’s expense all prohibited plants, or parts thereof capable of propagation.