7 U.S. Code § 1573 - Exemptions
The provisions of sections 1571 and 1572 of this title shall not apply to any carrier in respect to any seed transported or delivered for transportation in the ordinary course of its business as a carrier:
When the Secretary of Agriculture finds that, because of the time interval between seed harvesting and sowing, or because of an emergency beyond human control, the information required by this chapter as to the germination, and hard seed of certain kinds of seeds, cannot be given prior to transportation or delivery for transportation in interstate commerce, he may promulgate, with or without a hearing, rules and regulations providing that the provisions of section 1571(a) and (b) of this title as to the required labeling for germination and hard seed shall not apply for such period and to such kinds of seed as he may specify in his said rules and regulations.
The provisions of sections  1571(a) and (b) of this title relative to the labeling of agricultural and vegetable seeds with the percentages of the kind or kind and variety of seeds shall not be deemed violated if there are seeds in the container or bulk which could not be, or were not, identified because of their indistinguishability in appearance from the seeds intended to be transported or delivered for transportation in interstate commerce:
The provisions of section 1571(i) of this title relative to the labeling of agricultural and vegetable seeds with the name of any substance used in the treatment of seeds shall not be deemed violated if the substance or substances used in such treatment could not be or were not identified because of their indistinguishability from the substance or substances intended to be used in the treatment of the seeds:
 So in original. Probably should be “section”.
1966—Subsec. (d). Pub. L. 89–686, § 12(a), substituted “the kind or kind and variety of seeds”, “if there are seeds”, “:
Subsec. (e). Pub. L. 89–686, § 12(b), added subsec. (e).
1958—Subsec. (b). Pub. L. 85–581 inserted references to section 1571(i) of this title and eased labeling requirements with respect to shipment of seed in containers and in quantities of twenty thousand pounds or more.