Varying the spatial arrangement of synthetic herbivore‐induced plant volatiles and companion plants to improve conservation biological control
Conservation biological control aims to control pests by promoting wild populations of natural enemies. One challenge is to attract and retain efficient natural enemies in crop fields, which often are a suboptimal environment. Towards this goal, the attract‐and‐reward strategy relies on combining attractive synthetically produced herbivore‐induced plant volatiles (HIPVs) with companion plants (non‐crop plants which provide alternative resources to the targeted natural enemies). Although severely overlooked, the spatial arrangement of HIPV dispensers and rewards inside crop fields may strongly influence the foraging behaviour and persistence of natural enemies and thus the success of this pest management strategy.
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