Dr. Bob Rouse, of the UF/IFAS Southwest Florida Research and Education Center, has been added to the lineup of Citrus Expo seminar speakers. He will present an update on HLB and nutrition and discuss systemic acquired resistance (SAR) trials at Immokalee at 2 p.m. on Wednesday, Aug. 18. For the complete list of Citrus Expo seminar topics, speakers, and times, click here.