Attraction of beneficials.

Abstract This chapter deals with attracting beneficials such as predators, parasitoids and pollinators by visual attraction method using UV, blue or green light. Case studies of recruiting natural enemies are given. The few recent studies described in this chapter indicate that it is possible to recruit natural enemies with violet light in both greenhouses and open-field conditions. It is expected that future research and development of this method will lead to its implementation in the agricultural environment. Technical improvements of this method may include high-intensity light emitting diodes (LEDs), more efficient electrical circuit design and the use of solar-powered LEDs.