Integrated management of new-found pests on bottle gourd rootstocks and watermelon graft-unions in greenhouse

摘要

Lycoriella pleuroti Yang et Zhang (Diptera: Sciaridae) and Scatella tenuicosta Bennison (Diptera: Ephydridae) have become major pests on greenhouse seedlings and caused lots of economic losses, which has greatly restricted the development of modern facility agriculture in Wuhan. We reported here the first integrated management of new-found pests on bottle gourd rootstocks and watermelon graft-unions in greenhouse. In this study, we conducted pretreatment to control pest population in greenhouse by isothiocyanate and dichlorvos (DV). The treatment reduced 72.8-77.3% adult pests compared with control. Moreover, we conducted two kinds of methods to protect bottle gourd rootstocks and graft-unions from pest damage, i.e. pesticide-mixed soil for sowing and DE covering. The results showed low or no toxicity to bottle gourd seedlings and the protection efficiency arranged from 75-100%. This study will be a guideline for facility cultivation of watermelon. The application of safe and low toxic pesticides will greatly improve the quality and safety of watermelon products, which is also beneficial for the sustainable development of facility agriculture.