Which application technique is used most often for small spots with only a few target plants?

Spot treatment is commonly utilized for small areas where there are only a few target plants that need to be managed. This technique focuses on the specific plants rather than applying herbicides over a larger area, which helps to minimize the impact on surrounding vegetation and the environment. Spot treatment allows for more precision in targeting the unwanted plants, ensuring that the herbicide is effectively applied only where necessary.

Foliar application, while effective, generally refers to spraying the herbicide over larger areas of foliage and isn't as precise for small spots. Cut-stump application is typically used for woody plants by applying herbicide directly to freshly cut surfaces, and high-volume application involves using larger quantities of herbicide over extensive areas, which isn't suitable for managing a few target plants. In contrast, spot treatment is tailored for focused control of limited infestations, making it an ideal choice for the scenario described in the question.