Pest management in organic greenhouse horticulture

The management of pests is one of the major challenges in organic greenhouse cropping systems. In this paper, I summarize the currently most problematic and persistent, as well as the newly emerging pest species in organic tomato, sweet pepper, cucumber and aubergine crops in Europe. Furthermore, I discuss 3 new developments in biological pest control with arthropod natural enemies: 1) the integration of augmentative and conservation biological control, 2) the increased use of omnivorous predators as biological control agents and 3) the presence of other factors that affect directly or indirectly the performance of pests and natural enemies, such as endophytes, plant nutrition, disease control and greenhouse climate management. Finally, I suggest some directions for future research.