How Nitrogen Levels are Affecting Oak Trees
Acute Oak Decline (AOD) and Chronic Oak Dieback (sometimes called Chronic Oak Decline (COD)) are two concerning diseases affecting the UK’s iconic oak trees. Both seriously affect the health of oak trees, and both can eventually kill the tree. AOD inflicts blisters and black bleeds on the trunk and branches of the tree, while COD targets the tree’s ‘central nervous system’, its roots, truncating its ability to take up water and nutrients and forcing leaves and branches to dieback.