Rhuanito "Johnny" Soranz Ferrarezi

Citrus Horticulture Research 

Dr. Rhuanito Soranz Ferrarezi [70% research], is an Assistant Professor of Citrus Horticulture at the Indian River Research and Education Center (IRREC) at UF-IFAS. His primary research areas are citrus horticulture, precision irrigation, plant nutrition, and cultural practices, including the innovative Citrus Under Protective Screen (CUPS) project to exclude psyllids from young grapefruit plantings. Dr. Ferrarezi works with local producers to improve irrigation management and conduct nutritional enhancement studies in HLB-infected groves. Dr. Ferrarezi leads the IRREC variety trials testing new scions and rootstocks and the citrus under protective screen trials to exclude psyllids from young grapefruit plantings. He has authored/co-authored 26 refereed articles, 70 conference papers, several technical reports, 5 books, and 5 book chapters.

Current projects

    • Identification, assessment and delivery of antimicrobial compounds for the management of citrus HLB
      • Citrus Under Protective Screen (CUPS) for HLB Management
        • Accelerating implementation of HLB tolerant hybrids as new commercial cultivars for fresh and processed citrus
          • Unraveling the effects of alternative rootstock propagation methods on root architecture and field performance of citrus trees
          • Citrus nutrient management on huanglongbing affected round orange and grapefruit groves on flatwoods and ridge soils
          • Low-cost open-source controllers for irrigation monitoring and controlling
          • Plant density and irrigation systems for sweet orange production at the Indian River District
          • Protected cultivation system to reduce HLB disease incidence and produce high-value fresh grapefruit
          • High plant density to increase grapefruit production at the Indian River District 

          Past projects

          • Performance of capacitance sensors to monitor soil moisture and electrical conductivity in sandy soils for precise water and fertilizer management
          • Unraveling the effects of alternative rootstock propagation methods on root architecture and field performance of citrus trees
          • Citrus nutrient management on huanglongbing affected round orange and grapefruit groves on flatwoods and ridge soils
          • Accelerated production of citrus nursery trees using automated ebb-and-flow subirrigation
          • Grapefruit production using different irrigation systems and plant density under open hydroponics
          • Citrus nutrient management on huanglongbing affected round orange and grapefruit groves on flatwoods and ridge soils
          • Low-cost open-source controllers for irrigation monitoring and controlling Plant density and irrigation systems for sweet orange production at the Indian River District
          • Protected cultivation system to reduce HLB disease incidence and produce high-value fresh grapefruit
          • High plant density to increase grapefruit production at the Indian River District 

          Dr. Ferrarezi, Assistant Professor of Citrus Horticulture

          Dr. Ferrarezi examines fruit in the IRREC research grove. The citrus fruit tree has both canker and citrus greening