Which type of rot is more likely to cause windthrow?

Root rot is the type of rot more likely to cause windthrow, which refers to the uprooting of trees due to strong winds. The reason root rot is particularly associated with windthrow is that it directly affects the tree's root system, compromising its structural integrity. When the roots begin to decay, they lose their ability to anchor the tree securely in the ground.

This weakening of the root structure reduces the tree's resistance to wind forces. As a result, even moderate winds can lead to uprooting or toppling because the tree can no longer maintain its stability. Root rot is often caused by pathogens that attack the root tissues, which is crucial for the health and stability of the tree.

Other types of rot, such as brown rot and white rot, typically affect the wood above ground and while they can weaken the trunk, they do not impact the root system directly, thus having less influence on the tree's ability to withstand wind forces. Dry rot primarily refers to a condition in which wood becomes brittle and breaks apart due to a lack of moisture, typically affecting wood structures rather than live trees. Therefore, root rot is specifically linked to destabilizing the tree, making it the primary contributor to windthrow risks.