1. (1) Land requirements prior to planting for the production of rapeseed are as follows:

   Class Planted	Class Produced	Years Field Shall be Free of Rapeseed
   Breeder	Foundation	5
   Foundation	Registered	4
   Breeder, Foundation, Registered	Certified	3

2. (2) Land requirements prior to planting of mustard or radish are as follows:

   Class produced	Years free from any cruciferous crop
   Foundation, Registered or Certified	5 years
   May be reduced to three years if following the same variety of the same or higher class.

3. (3) For all classes no manure or other contaminating materials shall be applied during the establishment and production period of the rapeseed stand.
4. (4) Reseeding of a rapeseed, mustard, or radish field due to failure or partial failure of the first seeding may be done by referring to the guidelines in WAC 16-302-045(5).
5. (5) Ditchbanks, roadways, irrigation canals, and property, adjacent to a Certified rapeseed field must be free of volunteer rapeseed and prohibited noxious weeds.

[Statutory Authority: RCW 15.49.005, [15.49].021, [15.49].310, [15.49].370, 15.140.030, and chapter 15.49 RCW. WSR 25-09-035, s 16-302-485, filed 4/9/25, effective 5/10/25. Statutory Authority: RCW 15.49.005, 15.49.081, 15.49.310, 15.49.370(3), and chapter 34.05 RCW. WSR 14-20-050, § 16-302-485, filed 9/25/14, effective 10/26/14. Statutory Authority: RCW 15.49.005, 15.49.081, 15.49.310, 15.49.370(3) and chapter 17.24 RCW. WSR 00-24-077, § 16-302-485, filed 12/4/00, effective 1/4/01.]