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ORIGIN: Centennial Russet was tested as WC285-146 and was jointly released by Colorado State University and the USDA in 1977. the parentage is W12-3 x Nooksack.

CHARACTERISTICS: Plants are determinate, medium large, upright, spreading and medium to late maturing. Stems are large, green (occasionally with reddish pigmentation at the nodes) and the wings are slightly wavy. Leaves are large, dark green, open and pubescent. Petioles are light green with red pigment at the base. The terminal leaflets are large, ovate and symmetrical. Primary leaflets are symmetrical, ovate and partly truncate. Flowers are many, large and lavender with white at the apex. The calyx has red pigmentation at the base. Anthers are large and orange with a moderate amount of pollen.

Tubers are oblong, smooth,blocky and slightly flattened with a thick, dark netted skin. Eyes are shallow and sparse on the stem end. Tuber flesh is white.

STRENGTHS & WEAKNESSES: Centennial Russet is adapted to certain areas of the West and to the San Luis Valley of Colorado. Tuber yields are low to intermediate when compared with Norgold Russet in the West but are moderate to high in the San Luis Valley. Specific gravity is generally medium and baking and boiling qualities are good to excellent. Sugar content of tubers is generally too high for processing. Hollow heart may be a problem. Centennial Russet has moderate tolerance to Verticillium wilt, early blight, rhizoctonia and Fusarium dry rot, but is susceptible to common scab and leaf roll.