BUD VARIATION IN THE WASHINGTON NAVEL OEANGE. 69 
season after the increase in 1911. Contrasted with this record is the 
annual average yield of 100.8 pounds produced by tree 7: 1-68-13, 
listed in rank 136 in the same tables. This tree also shows a fairly 
uniform crop throughout the periods, but with a reduced yield during 
the last two seasons. 
It will be noticed that while the weight of the average crop of the 
tree ranked No. 11 is practically three times that of the other tree, 
the average number of fruits produced is only slightly more than 
twice as many. A determination of the average weight per fruit 
gives comparative results of 0.5 and 0.35 pound. The most desirable 
commercial sizes of the Washington Navel oranges are those which 
pack 126, 150, 176, and 200 to the box, the highest prices usually 
being received for the 126 and 150 sizes. A fruit weighing 0.5 pound 
is generally of the 150 size, while one weighing 0.35 pound is about 
size 200. An inspection of the number of fruits of the various sizes 
borne by the two trees shows that the tree ranked No. 11 had more 
of the 150 size than of any other, while the other tree produced the 
largest number of the 200 size. Comparing the number of fruits 
of the 126, 150, 176, and 200 sizes produced by the two trees, we find 
that the highest producing tree bore approximately 63 per cent of 
these desirable sizes, while the other tree had only 45 per cent of the 
same sizes. 
A comparison of the relative proportions of high-grade fruit pro- 
duced by these trees shows again the superior value of the high- 
producing tree, for it had 82.6 per cent of the Orchard grade, or first- 
grade, fruit, while the other tree had only 78.2 per cent of this grade. 
The number of variable fruits found on these trees was very small, 
being only 0.43 per cent of the total number of fruits in the case of 
the high-producing tree and 0.42 per cent on the other tree. 
It will be seen that this and similar high-producing trees are of 
superior value, not only on account of their high production, but 
also because of their large proportion of fruit of the most desirable 
sizes and their high percentage of first-grade fruit. These conditions 
also make such trees of special value to the propagator as sources of 
bud wood for nursery propagation or for rebudding older trees of 
undesirable strains. 
In Table IV are given the average total crops of the 481 trees in the 
record plats on which data have been secured for four successive 
years, and in Table V are presented the annual detailed performance 
records of 64 representative trees from this list. These tables are 
similar in character to Tables II and III, but they present data for 
a 4-year instead of a 6-year period. The trees listed in Table V were 
chosen on the same basis as those in Table III, but in order to reduce 
the length of the table it was necessary to omit some of the trees of 
the Thomson, Golden Nugget, and Yellow Washington strains. 
