WAC 16-324-401   Latent virus testing requirements.  (1) PVX testing is required for nuclear and generation 1 class seed potatoes. PVX testing is optional for all other classes.

     (2) Growers must submit petiole samples for latent virus testing to a laboratory approved by the department. The applicant is responsible for laboratory testing fees.

     (3) The minimum number of plants per seed lot to be sampled for PVX testing is one hundred. For nuclear class, a minimum of one percent of the total number of plants per lot must be sampled. For generation 1, a minimum of two hundred plants per acre must be sampled. For generation 2, a minimum of fifty plants per acre must be sampled. Generation 3, 4 and 5 seed lots should be sampled at a rate of twenty plants per acre. The department may require additional testing.



[Statutory Authority: Chapters 15.14 and 34.05 RCW. 07-11-010, § 16-324-401, filed 5/3/07, effective 6/3/07. Statutory Authority: Chapter 15.14 RCW. 02-12-010, § 16-324-401, filed 5/23/02, effective 6/23/02; 00-20-070, § 16-324-401, filed 10/3/00, effective 11/3/00. Statutory Authority: RCW 15.14.030. 97-11-028, § 16-324-401, filed 5/14/97, effective 6/14/97.]