What is a disadvantage of chemical methods for maintaining ROWs?

The choice of non-selective as a disadvantage of chemical methods for maintaining rights-of-way (ROWs) highlights a significant concern in using herbicides and other chemical agents in vegetation management. Non-selective herbicides kill a wide range of plant species, not just the target plants that need to be controlled. This can lead to unintended damage to desirable vegetation, impact local ecosystems, and disrupt the balance of plant communities.

Using non-selective herbicides can result in the loss of native plants and increased vulnerability of the area to invasive species, which may outcompete the native flora. Additionally, this can create a cascade of ecological effects, potentially harming wildlife that relies on specific plants for food and habitat.

While other options such as high cost, the requirement for heavy equipment, and environmental safety could also present challenges associated with chemical methods, the non-selective nature of these chemicals is particularly noteworthy, as it can cause widespread ecological disruptions that could be difficult and costly to mitigate.