This publication outlines characteristics of each pollinizer cultivar, including incompatibility alleles, flowering and nut characteristics, and pest tolerance. The data presented in this publication were collected from the original seedling tree of each pollinizer cultivar, and these cultivars currently are being evaluated in replicated trials and commercial plantings.
Therefore, we...
Clark is a hazelnut selection developed by Oregon State University.
Trees of this genotype are about 30 percent smaller than ‘Barcelona’ yet
have comparable yields to ‘Barcelona.’ This selection has good quantitative resistance to eastern filbert blight (EFB).
Harvest is 7–10 days earlier than‘Barcelona’ and nuts are free-husking.
Nuts have...
‘Lewis’ is a hazelnut cultivar developed by Oregon State University and released in January 1997. This cultivar is precocious, and it is more productive and has a smaller tree size than ‘Barcelona.’ Harvest is earlier than for ‘Barcelona,’ and the nuts have fewer defects.