How do you kill hackberry stumps in a fenceline?

To kill hackberry stumps in a fenceline, you can apply a systemic herbicide containing glyphosate or triclopyr directly to the freshly cut surface of the stump. It’s best to do this shortly after cutting to ensure maximum absorption. Alternatively, you can drill holes into the stump and fill them with the herbicide. Make sure to follow safety precautions and local regulations regarding herbicide use.