Which type of applicator is recommended for applying right-of-way herbicides to soil at the base of undesired brush and small trees?

Using spot guns is particularly effective for applying right-of-way herbicides to the soil at the base of undesired brush and small trees because they allow for precise targeting of specific areas. This method minimizes drift and off-target application, which can harm desirable vegetation and the surrounding environment. Spot guns enable the applicator to concentrate the herbicide where it's needed most, ensuring that the roots of the unwanted brush and small trees receive the treatment directly.

In contrast, other options may not provide the same level of accuracy or control. Granular applicators distribute herbicides over a wider area, which might result in overspray or unintended application to non-target plants. Backpack sprayers could offer mobility and flexibility, but they can be less precise in applying products at the base of plants, leading to potential waste and environmental concerns. Flat-fan nozzles are typically used for broadcast spraying and might not achieve the targeted application needed for effectively treating the base of specific plants.