Effect of narrow-banded blue LED device on host plant settlement by greenhouse whitefly and currant-lettuce aphid

Abstract Manipulating phytophagous insects with light-based repelling techniques has shown its potential to be a useful tool in integrated pest management systems the future. Underlying optical mechanisms can applied field and protected cultivation, reflecting materials or emitting light sources, such as LEDs. Many are characterised by their cryptic lifestyle avoid intervening protection measurements. In addition, there is high degree of resistance against insecticides certain species. The idea most light-repelling reduce immigration settlement species on hostplants before population growth even starts. We conducted experiments narrow-banded blue LEDs arranged around plants radiation towards sky. For compact rosette Lactuca sativa upright-branched Euphorbia pulcherrima, we tested suitability measure Trialeurodes vaporariorum 2 choice experiments. further reduced number untreated plants, T. Nasonovia ribisnigri were evaluated for effect hostplant barrier lettuce under more practical conditions. shows repellent impact greenhouse whitefly, independent different plant architectures. modified experiment showed strong decrease whitefly. currant-lettuce aphid, tendencies shown, but no statistical could demonstrated. Possible applications differences between insect used discussed.