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Yamhill Hazelnut (OSU 542.102)

Rebecca McCluskey, Shawn Mehlenbacher and, David Smith (August, 2009)

Summary

‘Yamhill’ (OSU 542.102) was developed and evaluated by the hazelnut breeding program at Oregon State University, Corvallis, Oregon, and was released in January 2008. Trees of ‘Yamhill’ are completely resistant to eastern filbert blight (EFB) caused by Anisogramma anomala (Peck) E. Müller. Compared to ‘Barcelona’, trees of ‘Yamhill’ are smaller but very productive, and nuts mature at the same time as those of ‘Santiam’ and ‘Gamma’, approximately 10–15 days ahead of ‘Barcelona’. Marketable nut yields exceed ‘Barcelona’, and kernels have few defects, although they are small and best suited for the kernel market.