Neb. Rev. Stat. §§ 81-2,147.12
The Nebraska Seed Law and any rules and regulations adopted and promulgated thereunder shall supersede and preempt any ordinance, rule, regulation, or resolution enacted by any political subdivision of the state regarding the regulation of seeds. No political subdivision shall prohibit or in any other manner regulate any matter relating to the registration, labeling, or sale of seeds based upon the type, nature, or genetic makeup of such seeds. No political subdivision shall prohibit or in any other manner regulate any matter relating to the registration, labeling, sale, storage, transportation, distribution, notification of use, planting, or cultivation of seeds that is in addition to or in conflict with the Nebraska Seed Law and any rules and regulations adopted and promulgated thereunder. Nothing in this section shall be construed to preempt or otherwise limit the authority of any city or county to adopt and enforce zoning regulations.
Neb. Rev. Stat. §§ 81-2,147.12