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World of CitrusWorld of CitrusUS SuperSour 5
Kim D. Bowman · HortScience / American Society for Horticultural Science · 2023-11-28
https://doi.org/10.21273/HORTSCI17466-23 (opens in a new tab)
Table 1 identifies SS5 parentage as a Florida Mato seedling × Shekwasha and lists release year 2023. The article gives SS2–SS5 a collective 2000–2006 cross range, not an individual SS5 cross year. Its 2014 Picos/St. Lucie Valencia trial includes SS5; trial yields are Valencia scion results, not fruit or yield intrinsic to the rootstock.
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Kim Bowman · Citrus Research and Development Foundation · 2024-05-15
https://citrusrdf.org/fmuploads/2024-04_21-008_Bowman_PR.pdf (opens in a new tab)
Page 1, Objective 1, “Release of new rootstocks,” states that US SuperSour 4 and US SuperSour 5 were “released in September 2023” and propagated for upcoming demonstration plantings and field trials. This is the project report’s release-status account; it supports September 2023 at month precision, with no day stated, not a specific trial outcome.
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Ariel Singerman; Kim Bowman; Danelle Seymour · Citrus Industry (sourced from UF/IFAS Citrus Magazine) · 2026-01-07
https://citrusindustry.net/2026/01/07/study-shows-performance-new-rootstocks/ (opens in a new tab)
The article analyzes Valencia scions in the 2014 USDA Picos Farm, Fort Pierce trial (640 trees/ha; 50 rootstocks). It reports US SuperSour 5 among the two highest-performing rootstocks, with 361 lb solids/acre and a $1,291/acre cumulative revenue difference versus sour orange in 2022 dollars at 10% interest. The reported six-season analysis concerns the grafted Valencia crop and the same 2014 Picos cohort discussed in Bowman 2023, not a separate trial; the article's relative trial years are not mapped to calendar years.
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