(1) To apply for certification, applicants must use the form provided by the department and furnish all information requested, including the date, name, signature and address of the applicant, lot number, seed source identification number, variety, class planted, acres, date planted, seed spacing at planting, average length of rows, year the field was last cropped to potatoes, along with their variety and lot number, and a map of the field location. Applications for certification must reach the department on or before June 15 of each year, accompanied by the appropriate fee, field location maps and evidence of eligibility such as tags or certificates. A North American Certified Seed Potato Health Certificate is required for evidence of eligibility for seed lots originating in other states or Canada, and must be submitted with the application. A certificate of compliance is required for evidence of eligibility and must be submitted with the application for seed lots originating in Washington state except when planted back on the same seed potato farm. Unless prior approval has been granted, late applications will be assessed a late fee of twenty dollars per application. The department will not accept applications after July 10.

(2) Separate applications are required for each variety, seed source, and seed lot except as described in subsection (5) of this section.

(3) Separate applications are required for each field location that is separated by more than one hundred feet.

(4) Growers may withdraw a seed potato lot from certification for any reason by notifying the department in writing.

(5) Growers may use a single application for multiple varieties planted in a field plot totaling 1/8 acre or less. The application must contain the information required in subsection (1) of this section for each variety. Growers shall use one identification number for the field plot with a separate letter designation for each variety in the field plot.