Root growth of trees at trials 2 and 3 in Hendry County and in Polk County, respectively, continued to be monitored bimonthly using rhizotrons and an imaging system. Trees in both trials were evaluated for foliar HLB symptoms and canopy health. Leaves were collected from trees and are currently being processed for CLas titer determination. Root growth measurements commenced in trial 4 which was established in November in Indian River County using the same rhizotron/imaging system that is used in the other trials. The analysis of the large data set from trial 1 at SWFREC which was terminated (whole tree excavations) during the last quarter has been completed. Data on root architecture, tree growth, and nutrients were presented during the Florida Citrus Show in Fort Pierce in January and during a FNGLA nursery workshop in Lake Alfred in February. Pdf files of presentations are available upon request. The study Influence of Rootstock Propagation Method on Traits of Grafted Sweet Orange Trees by U. Albrecht, S. Bodaghi, B. Meyering, K.D. Bowman was accepted for publication in HortScience and is currently in press (for open access). Two abstracts were submitted for presentation of research data at the FSHS and ASHS annual meetings (both in Florida). The two-year horticultural evaluations of trees in trials 2 and 3 were planned to commence at the end of this quarter but had to be postponed because of UF closure and research halt due to Covid-19.