Oregon Revised Statutes Agricultural Marketing and Warehousing § 576.729

(1) The terms of a seed purchase contract must include:

(2) If the seed purchase contract does not settle the price of the grass seed, the contract is enforceable and price shall be determined as described in ORS 72.3050 (1) to (3). A seed purchase contract must require the seed dealer to make payment to the seed grower within 30 days after seed delivery. However, upon written mutual agreement of the seed grower and the seed dealer, the grower may extend the period available for the dealer to make payment.