Developing a biologically-based IPM program for western flower thrips,Frankliniella occidentalis, in greenhouse floriculture

Abstract: Few conventional insecticides registered in Canada today effectively control westernflower thrips. Consequently, biological control agents are increasingly used. Recommendationsand procedures developed for these natural enemies in vegetable crops though, do not translatedirectly to ornamentals. Furthermore, as tolerance for cosmetic damage is extremely low, a singlebiocontrol agent (the pesticide paradigm) rarely provides satisfactory levels of control. Strategicselection and use of several natural enemies together, within a bio-based IPM program, canprovide an effective solution. Here, we report on trials on interactions between different naturalenemies; by taking an integrated approach to their deployment, we are aiming to achievemaximum efficacy in the most cost-effective manner.