What does the term "dip" refer to in pest control?

In pest control, the term "dip" specifically refers to the complete or partial immersion of a plant or animal in pesticide. This method is often used to ensure that the pesticide effectively reaches all areas of the organism being treated, which can be particularly important for managing pests that may not be adequately controlled through surface treatments or sprays. Dipping is especially beneficial for items like trees, bulbs, or livestock, where thorough coverage is needed to combat pests or diseases.

Other methods mentioned, such as applying pesticides to the soil, spraying across large fields, or delivering pesticide through a granule system, do not involve immersion and thus do not fit the definition of "dip." Each of those methods serves different specific purposes in pest control but lacks the coverage and immersion aspect characterized by the dipping technique.