This guide is designed to help Christmas tree growers learn to assess a
plantation’s nutritional needs based on soil and
foliar analyses and rotational timing. It
will help you design strategies for effective nutrient
applications and produce high-quality trees
with minimal negative environmental impact.
Very informative and useful publication for nursery management and workers. Discusses the history of Phytophthora ramorum in Oregon and its biology, hosts and symptoms. In depth information on the management and prevention of the pathogen.