Michigan Administrative Code › Department - Agriculture and Rural Development › Pesticide and Plant Pesticide Management Division › RegulationNo 628 - Seed Potato Certificate › Section R. 285.628.1 - Definitions

Current through Vol. 24-12, July 15, 2024
Rule 1. As used in these rules:
(a) "Certifiable seed potatoes" means seed
				potatoes which meet or exceed the standards established in these rules, which
				are produced and stored as required by these rules, and which originate from a
				state-approved laboratory or greenhouse program that involves in vitro
				techniques of propagation and the subsequent production of plants or tubers
				under a controlled environment. Seed stock produced under these controlled
				conditions shall be designated nuclear. Seed originating from this program will
				be produced in a limited generation system of foundation-field years 1 through
				5, and certified field years 1 through 6. foundation-field year 1, is the first
				field progeny of nuclear seed produced in a laboratory or greenhouse program.
				Initial explants shall be screened for the presence of pathogens by using
				accepted techniques.
(b)
				"Certification" means the act of verifying compliance with the standards or
				requirements specified in the regulations governing the production of seed
				potatoes. Except as otherwise specified, the measurement method or basis for
				determining compliance with the standards is visual inspection of the growing
				grounds and crops thereon or harvested therefrom as described in the
				regulation. "Certification" does not constitute a guarantee or warranty or
				representation that the seed potatoes to which the indicia of certification
				(certification tags, seals, bulk certificates) are attached, or which are
				otherwise represented as certified, are merchantable or fit for a particular
				purpose.
(c) "Certified seed" means
				a class of seed which meets the disease and varietal tolerances established by
				these rules for field year 1 through field year 6 and which is the progeny of
				foundation seed or the progeny of seed produced in another state or country
				that is certified as foundation seed or a higher class by an official
				seed-certifying agency in the other state or country using standards comparable
				to the standards established in these rules. Certified seed from other states
				or countries that is to be entered for certification in Michigan must meet or
				exceed Michigan's certified seed standards.
(d) A Commercial potato production@ means
				production of potatoes for other than certified seed purposes.
(e) "Field year" means a seed potato
				classification designating the number of years a particular lot has been grown
				in the field after greenhouse propagation.
(f) "Foundation seed" means the progeny of
				nuclear seed or a comparable seed class approved by the certifying agency.
				Foundation seed shall meet the disease and varietal tolerances established in
				these rules for field year 1 through field year 5.
(g) "Nuclear seed stock" means propagation
				material, including mini-tubers and plantlets, which originated in a
				state-approved laboratory or greenhouse program that involves in vitro
				techniques and which is grown under controlled conditions.
(h) "Operation" means a seed potato
				enterprise where the lowest class of seed planted is certified, field year 6.
				It includes all land, equipment, storages, and facilities used to produce
				certified seed.
(i) "Seed lot"
				means all the seed potatoes of the same variety which are of a single class,
				which are of a specific seed source, and which are harvested from a field or
				stored together in a specific storage facility.
(j) "Seed potato" means the tuber that is
				used for the reproduction of the potato.
(k) "Seed potatoes eligible for
				certification" means any of the following:
(i) Any potato variety that has been
				released, named, and had its description published by the potato association of
				America, United States department of agriculture, or a recognized state
				agricultural experiment station.
(ii) Cultivars that do not have published
				descriptions, such as advanced lines from breeding programs and protected
				varieties, if the seed source is approved by the official seed-certifying
				agency and a plant and tuber description is provided to the official
				seed-certifying agency.
(iii)
				Lines, selections, and transgenic seed stocks which are derived from previously
				named and described varieties, which enter an approved tissue culture program,
				and which carry a trait or traits that are not visibly certifiable if the
				lineage is clearly substantiated by signed affidavit.