ATCP 156.01(28)(28) “Seed potato” means a tuber, minituber or microtuber that is used, or that is held, offered, sold or distributed for use, for the field propagation of potatoes. ATCP 156.01(29)(29) “Seed potato grower” means a person, other than the college, who produces seed potatoes on land in this state that the person owns or controls. ATCP 156.01(30)(30) “Sell” means to contract for sale, offer for sale, hold for sale, transport or distribute for sale, or advertise or label for sale. ATCP 156.01(31)(31) “Serious damage” means any defects, except sunburn, greening or hollow heart, which seriously detract from the internal or external appearance of a potato, or which cannot be removed without removing more than 10% of the total weight of the potato. “Serious damage” includes any of the defects identified in s. ATCP 156.11 (3). ATCP 156.01(32)(32) “Soft rot or wet breakdown” means any soft, mushy, or leaky condition of seed potato tissue. ATCP 156.01(33)(33) “Spindle tuber” means the condition caused by potato spindle tuber viroid (PSTVd). ATCP 156.01(35)(35) “Tissue culture plantlet” means a pathogen-free potato plant grown aseptically, from a tissue sample, in an aseptic artificial medium. ATCP 156.01 HistoryHistory: CR 06-085: cr. Register April 2007 No. 616, eff. 5-1-07. ATCP 156.02ATCP 156.02 Seed potato certification; general. ATCP 156.02(1)(1) Certification by college. The college may certify a lot of seed potatoes at the request of the seed potato grower if the college finds that the lot meets applicable standards under s. ATCP 156.03. Certification does not constitute a warranty by the college, and does not extend to any disease or condition that cannot be observed by visual inspection of potato plants or tubers. ATCP 156.02(2)(2) Classifying certified seed potatoes. The college shall classify, according to s. ATCP 156.05, each lot of seed potatoes that it certifies under sub. (1). Classification does not constitute a warranty by the college. ATCP 156.02(3)(3) Certification documents. The college shall issue a certification under sub. (1) in writing, and shall provide copies of the certification documents to the seed potato grower. The certification documents shall include all of the following: ATCP 156.02(3)(c)(c) The certification date and the year to which the certification applies. ATCP 156.02(3)(d)(d) The location of the farm on which the certified seed potatoes are grown. ATCP 156.02(3)(g)(g) The classification assigned to the certified seed potatoes under sub. (2) and the basis for that classification. ATCP 156.02(3)(h)(h) The nature and source of the propagative material used to produce the certified lot. ATCP 156.02 NoteNote: Certified seed potatoes must be produced from propagative material that complies with s. ATCP 156.03 (1). ATCP 156.02(3)(i)(i) The result of each of the following inspections or tests conducted on the certified lot: