Which pest control method involves applying a substance directly onto the surface?

Direct application is a pest control method where a pesticide or other control substance is applied directly onto the surface of a plant, soil, or area where pests are present. This method allows for targeted treatment, ensuring that the pesticide interacts directly with the pests. It is particularly effective for addressing localized infestations, as it minimizes the amount of pesticide used and reduces the risk of affecting non-target organisms.

In contrast, indirect application would involve methods where the pest is not immediately contacted by the pesticide, such as baiting or trapping, which can lead to less immediate efficacy in managing pest populations. Systemic control refers to using substances that are absorbed by the plant and then distributed throughout its tissues, providing protection against pests that feed on the plant but not involving direct application to the surface. Mechanical control involves physical methods, like using traps or barriers, and does not involve applying a substance to the surface but instead relies on non-chemical means to reduce pest populations.