Campbell nucellar Valencia orange
Citrus sinensis L. Osbeck
Photos by Toni Siebert, CVC, 4/11/2008. Photo rights. C-35 left, Carrizo right, 25 year old trees.
Source: Received as seed from Earl Campbell, Orange, Ca, 1942.
Parentage/origins: Parents unknown
Rootstocks of accession: Carrizo citrange, C-35 citrange
Season of ripeness at Riverside: March to July
Notes and observations:
11/1989, EMN: A typical Valencia. Many growers prefer Campbell to Olinda.
Description from The Citrus Industry Vol. 1 (1967):
"This Californian variety is commonly and, in the opinion of the writer, erroneously called Campbell Valencia. The fruit is indistinguishable from Valencia, but the tree exhibits certain consistent, discernible differences in vigor and behavior in comparison with Valencia. In trials of the two parent clones and of nucellar clonal budlines of comparable age, the trees of Campbell have consistently been more vigorous, thornier, larger, broader-topped, and slower to come into bearing than Valencia. The fruit has also been slightly lower in juice content than Valencia in the coastal region and has exhibited a greater tendency to regreen in the interior districts (Lombard, 1663). Moreover, in a trial at Santa Paula, Campbell is reported to have shown a higher, though small, percentage of fruits that were creased or of a chimeric nature. These differences, however, might possibly relate to infection by the stubborn virus.
Availability: Commercially available in California through the Citrus Clonal Protection Program.
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