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Newly planted Oaks stem exudate


Al Cormack
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The two oaks were planted last year by a landscaping company to replace two oaks that were felled (not by me) as they were dying. From what i can gather there was a lot of landscaping done at the site, and the soil levels were built up around the original oak trees, compacting roots etc.

 

What could be causing this to the new trees? Phytopthora?

 

 

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I've, personally, only seen it on mature trees, and am certainly not expert on pathogens, they just looked the same!
I thought I'd seen pictures of young trees infected but after goin through bits n pieces they are of saplings deliberately inoculated with bacteria and some with Agrilus larvae ( Bangor university I think )
It was in a report on AOD research mid 2015

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