Which chemical application method is used immediately on freshly cut stump surfaces?

The correct choice is the method known as "Cut stump." This application technique involves applying a chemical treatment directly onto the freshly cut surface of a stump immediately after the tree has been cut down. The primary objective is to prevent regrowth and to control the tree's future growth by allowing the herbicide to be absorbed through the cut surface and transported throughout the plant system.

This method is particularly effective because the freshly cut tissue is more receptive to the chemical, leading to a faster and more efficient uptake. By applying the herbicide directly to the cut stump, you minimize the potential for off-target effects on surrounding vegetation and soil, making it a precise and focused control strategy when managing unwanted vegetation.

Other methods, like soil drench, trunk injection, and bark spray, are applied in different contexts and to different plant parts. They may not be suitable immediately after cutting a stump and are generally used for different objectives, such as treating the root zone or injecting herbicides into the main trunk of the plant, rather than targeting the specific area created by cutting.