Umatilla Russet

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Umatilla Russet (/ˌjuːməˈtɪlə/, YOO-mə-TIL-ə) is a moderately late maturing variety of potato especially suitable for frozen french fries processing.^[1] It was jointly released by the Agricultural Experiment Station of Oregon, Idaho, and Washington and the U.S. Department of Agriculture in 1998.^[2] 'Umatilla Russet' has been equal to or better than Russet Burbank in fry color in Oregon and regional trials.^[3][4] The potato was named by the state of Oregon^[5] after the Umatilla tribe, from which the city of Umatilla also takes its name.

• Tuber skin is tan color and russety-like^[2]
• Tubers are long with a tendency for tapered apical ends^[2]
• Flesh is slightly creamy^[2]
• Leaves are dark green, medium pubescence^[2]
• Few (up to 7) flowers per plant^[2]
• Flowers are light purple with a yellow-orange center cone^[2]

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• Less susceptible to Verticillium wilt
• Less susceptible to net necrosis
• Resistant to Potato virus X (PVX)
• Expresses foliar symptoms of Potato virus Y (PVY)
• Less susceptible to tuber infection and decay caused by Phytophthora infestans
• More susceptible to blackspot and shutter bruise
• Less susceptible to hollow heart, brown center, growth cracks and sugar ends