Which tree management practice may involve the use of specialized equipment?

Cabling is a tree management practice that often requires specialized equipment to install cables and braces that help support weak branches or trunks, thereby reducing the risk of structural failure. This practice typically involves hardware such as cables, brackets, and anchors designed to reinforce the tree's structure. The installation of these supports can be complex and may require tools like drills, hoists, or even climbing gear, especially for taller trees or those located in hard-to-reach areas.

In contrast, fertilizing, watering, and mulching are generally practices that can be performed with basic tools and do not specifically require advanced or specialized equipment. Fertilizing may involve using a spreader, watering usually just needs hoses or watering cans, and mulching typically involves shovels or rakes. Therefore, the nature of cabling, with its need for specific hardware and tools, distinguishes it as the correct answer to the question.