Information on Other States

Field planting equivalency for states that raise seed potatoes

YEAR IN FIELD
Agency1 12 2 3 4 5 6 7 8 9
Alaska G1 G2 G3 G4 G5 G6 G7 G8
California G1 G2 G3 G4 G5 – – –
Colorado G1 G2 G3 G4 G5 G6 – –
Idaho FY1 FY2 FY3 FY4 FY5 FY6 –
Maine FY1 FY2 FY3 FY4 FY5 FY6 – –
Michigan6 FY1 FY2 FY3 FY4 FY5 FY5 – –
Minnesota G1 G2 G3 G4 G5 G5 C3
Montana N G1 G2 G3 G4 – – –

Nebraska

Wyoming

N G1 G2 G3 G4 G5 – –  
Nevada N G1 G2 G3 G4 G5
New York4 N1 N2 N3 G1 G2 G3 G4 G5 G6
North Dakota N G1 G2 G3 G4 G5 C
Oregon N G1 G2 G3 G4 G5 – –
Utah N (G1) G2 G3 G4 G5 G6 – –
Washington5 N G1 G2 G3 G4 G5 – –
Wisconsin FY1 FY2 FY3 FY4 FY5 FY6 C –
Canada PE E1 E2 E3 E4 F C –
(G1) (G2) (G3) (G4) (G5) (G6) (G7)

1    The purpose of this table is to express equivalency of terms used by various certification agencies for seed potatoes harvested from a series of successive field plantings.  For specific criteria relating to disease tolerances and other requirements, the reader is referred to the certification regulations of the agency in question.

2    The first field planting utilizes laboratory-tested stocks which may be tissue-cultured plantlets, greenhouse-produced minitubers, stem cuttings, or line selections.  Contact agencies for detail as to types of stocks planted in their programs.

3     Term used by agency for seed potatoes for a particular year in the field: C = Certified, E = Elite, F = Foundation, G = Generation, N = Nuclear, PE = Pre-elite.