Episodes of pest resistance to popular pesticides can cause crop yield losses, crop quality reduction, added control costs, increased human exposure to toxins, and degradation of the environment. These consequences can be alleviated if resistance management is practiced ... If growers minimize pesticide application by depending more on biological and cultural pest control measures, and reduce exposing pest populations to pesticides with identical modes of action, then resistance can be avoided.
Source: Management of Insect and Mite Resistance in Ornamental Crops]