What is the proper method for effective cut-stump herbicide treatment?

The most effective method for cut-stump herbicide treatment is to apply the herbicide to the freshly cut surface immediately after cutting. This approach works because the cut surface of the stump is still active in terms of transporting nutrients and fluids; applying the herbicide at this time allows it to be absorbed more readily into the plant’s system. The immediacy of the application is crucial, as waiting too long can decrease the effectiveness of the treatment due to the closure of the vascular system or the development of a protective layer over the cut surface.

Using herbicide on the leaves of the plant would not be effective, as this method targets the above-ground parts rather than providing a targeted solution to the stump itself. Allowing the stump to age before application can significantly reduce the herbicide's efficacy, as the plant may begin to compartmentalize the wound or heal over, preventing absorption. Furthermore, applying herbicide to the ground around the stump would not target the roots or tissues of the plant effectively, and the treatment may not be localized enough to prevent regrowth. Thus, applying herbicide directly to the fresh cut is the best practice for ensuring successful treatment of the stump.