Use of RNAi delivered by Citrus Tristeza Virus Viral Vector to control the Asian Citrus Psyllid – 2019 Second Quarter Report1. In April all trial trees were sampled and tested using ELISA to detect the presence of CTV and gel electrophoresis and rtPCR to detect the presence and stability of CTVvv-RNAi.2. All trial trees were also sampled and tested using qPCR for the presence of HLB in April. 3. Aphid scouting continues on a biweekly basis. The presence of brown aphid has not been detected.