Seasonal Prevalence of Orius spp. in an ‘Edamame’ Research Field in Kawasaki City

Abstract

We investigated the seasonal prevalence of Orius spp., which are widely known as important natural enemies of thrips, in a research field of ‘edamame’ (immature green soybean) in Kawasaki City. The populations of Orius spp. were observed on ‘edamame’ but there was no clear correlation to flowering term as reported previously. The occurrence of Orius spp. followed thrips, and then suppressed their populations. These results are important basic information for conservation biological control (CBC) in the area.