UFR-13

UFR-13 is a citrus rootstock identified as FG 1731 in the UF/IFAS St. Helena survey at Dundee, Florida. The report describes it as a putative Citrus ichangensis/Poncirus hybrid; that parentage remains provisional.^⁠[1]

The survey lists UFR-13 with Valquarius sweet orange in the 2008 planting. The report provides a field-trial context for the selection but does not give an individual release date or a specific performance appraisal in its interpretive summary.^⁠[1]