(1) It is the intent of the Legislature to eliminate duplication of regulation of seed. As such, this chapter is intended as comprehensive and exclusive and occupies the whole field of regulation of seed.
(2) The authority to regulate seed or matters relating to seed in this state is preempted to the state. A local government or political subdivision of the state may not enact or enforce an ordinance that regulates seed, including the power to assess any penalties provided for violation of this chapter.