Carrizo Citrange

Hodgson (1967) attributes the 1909 Washington navel × trifoliate-orange cross to E. M. Savage, working under W. T. Swingle’s direction, and reports Savage and Gardner’s 1965 evidence that Carrizo and Troyer were the same zygotic seedling, CPB 4-5019, rather than sister seedlings.^{⁠[1]⁠[17]}

Hodgson’s 1967 account says 200 seedlings of the unnamed clone were sent to the Winter Haven substation near Carrizo Springs in 1923, and that Swingle suggested the name Carrizo in 1938 after naming it Troyer in 1934. The same UCR accession page reproduces W. C. Cooper’s 1959 letter quoting E. Mortensen’s recollection of about 200 seeds sent to him in 1930 under CPB 450198-B. These accounts differ in year, propagule form, and code, so the transfer chronology remains unresolved.^{⁠[1]⁠[17]}

Hodgson (1967) relays Willard P. Bitters’ report that Carrizo’s field performance differed somewhat from Troyer. The chapter gives no trial design, scion, site, date, or measurements, so this remains a reported comparison rather than a quantified trial result.^{⁠[1]⁠[17]}