What does the term "trunk injection" refer to?

The term "trunk injection" refers to a technique that involves the direct introduction of substances into the xylem of a tree. This method is commonly used to deliver nutrients, pesticides, or other treatments that can help manage tree health effectively. By injecting into the xylem, the substances are transported throughout the tree's vascular system, allowing for quicker and more efficient uptake compared to surface applications. This technique is particularly beneficial in situations where traditional methods, such as foliar sprays or soil treatments, may not be as effective due to factors like weather conditions or soil quality. Therefore, trunk injection is recognized for its effectiveness in delivering treatments directly to the tree, ensuring that the intended substances reach the parts of the tree that need them most.