Oregon State College. Federal Cooperative Extension Service; Duruz, W. P. (Willis Pierre), 1896-(Corvallis, Or. : Federal Cooperative Extension Service, Oregon State College, 1939-09)
The filbert is propagated by layerage and a faster method is
needed to keep pace with the rapidly expanding industry and the demand
for new cultivars. Propagation by seedage and graftage were the
two methods selected ...