What type of herbicide application targets overlapping cuts in tree bark around the base of a tree?

A frill treatment involves making a series of shallow cuts into the bark of a tree and applying herbicide directly into those cuts. This method is specifically designed to target trees that need to be controlled or killed, allowing the herbicide to effectively penetrate the vascular tissue of the tree. The overlapping cuts create a larger surface area for the herbicide to be absorbed, ensuring that it reaches the tree's circulatory system, which ultimately leads to the tree's death.

The frill treatment is particularly useful for targeting larger trees or those that are difficult to treat with other methods, as it minimizes the risk of affecting surrounding vegetation and focuses the application precisely where it is needed. This targeted approach is distinct from other methods, such as drill application (which involves drilling holes into the tree), broadcast application (which distributes herbicide uniformly over a wide area), and spot treatment (which targets a specific area but does not utilize cuts in the bark). Each of these methods serves different purposes and is suited for different scenarios in weed management or tree control.