Complex diseases

In order to understand complex tree diseases plenty of detailed information about the location, the tree’s history and the influence of various damaging factors is necessary.

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05.07.2016 Forest protection with sessile oak Sessile oak is a highly desired tree species. However, a few of the many residence found living on the tree are causing problems for it. It is particularly precarious for the tree when early and late defoliators appear together. (2)
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