2 BULLETIN 1483, U. S. DEPARTMENT OF AGRICULTURE 
from Florida by several southern California nurserymen under the 
names of Hart's, Hart's Tardiff, Hart's Tardy, etc., the parent trees 
of which have been traced to the Rivers Nurseries. Subsequently 
they were found to be the Valencia variety, and they are not now 
ordinarily distinguished from the earlier introductions, the name 
Valencia being used for all the trees of this variety now grown in the 
Southwest. The trees in the. orchards where the original individual- 
tree performance studies were made, as reported in this bulletin, are 
one or more bud generations removed from one of the Florida 
introductions. 
Table 1. — Total shipments of Washington Navel and Valencia oranges from 
California, seasons 1916-17 to 192^-25, inclusive 
[Data from F. 0. Wallschlaeger, secretary California Citrus League, as reported by the railroads from 
car-lot loadings] 
Season November to 
October — 
Total shipments 
(boxes) 
Season November to 
October— 
Total shipments 
(boxes) 
Washing- 
ton Navel 
variety 
Valencia 
variety 
Washing- 
ton Navel 
variety 
Valencia 
variety 
1916-17 1 . 
13, 268, 128 
2, 468, 022 
8, 590, 572 
7, 544, 041 
10, 893, 635 
5, 305, 178 
4, 234, 211 
7, 235, 069 
7, 301, 736 
9, 437, 859 
1921-22 2 
6, 596, 462 
9, 918, 766 
12, 032, C36 
9, 438, 413 
5, 111, 892 
1917-18 
1922-23.... 
8, 897, 730 
1918-19 
1923-24 
8, 923, 601 
1919-20 
1924-25 2 
6, 267, 891 
1920-21 
i An extremely hot period in June, 1917, greatly reduced the Valencia crop that year and the crops of 
both the Washington Navel and the Valencia varieties for the following season. 
2 Both the Washingon Navel and the Valencia crops were affected by frost injury this season, and wind 
damage further reduced the Valencia crop in some districts in the season of 1924-25. 
Soon after its first fruiting the Washington Navel orange became 
the leading variety in the country, and it has maintained this posi- 
tion continuously. In recent years, however, the full appreciation 
of the possibility of holding the Valencia fruit through the summer 
and early fall, when no other oranges are on the markets, has 
greatly stimulated increased plantings of this variety, and for the 
last few seasons the Valencia shipments from California have nearly 
equaled those of the Washington Navel. The numbers of boxes in 
the annual car-lot shipments of Valencia and Washington Navel 
oranges for the seasons 1916-17 to 1924-25, inclusive, are shown in 
Table 1. Separate records of the shipments of these two varieties 
were not kept previous to the 1916-17 season, but the proportion of 
the Valencia to the Washington Navel was higher in that season 
than at any previous time. It was estimated that but for the injury 
done by the hot weather in June, 1917, the Valencia shipments in 
the 1916-17 season would have been fully equal to 50 per cent of 
those of the Washington Navel. 
BUD VARIATION IN THE VALENCIA ORANGE 
The individual-tree performance records and tree-estimate studies 
which have been carried on for several years in many Valencia 
orchards in the Southwest, mainly in southern California, have 
developed conclusive evidence as to the presence of diverse strains of 
this variety. 
