112 BULLETIN 624, IT. S. DEPARTMENT OF AGRICULTURE. 



these calculated crops figured on the basis of the actual prices obtained 

 during the investigational period, and considering the variations in 

 grades and sizes produced per acre by the two groups of trees, would 

 be $311.32 and $84.17, respectively. 



This correlation of heavy yield and superior commercial grade in 

 the production of trees of the Valencia strain is very important from 

 the standpoint of the stabilization of the variety through bud selection 

 based on performance records. Figures 4, 5, and 6 indicate that the 

 propagation from the highest yielding trees means not only heavier 

 production, but also improvement in the grade and size of fruit. 



725/V t/£Xl//£&7 a &?e>0t/CY/V<? 77?£&S 7FA/ ZOMS&T /=>MXX/C/A/G r/P/TSP 



/=&? c&vr or o&y* fi£& cr/vr or c/pgp 



\32.0 2S8 *~?- 1 BJMau.Miiiwiwiw^— 



■/£•<? 



2/G 



/O.O | 



m/<s.7 



200 



7.3 1 



ms.s 



/re 



3./ 1 



U46> 



/so 



2.31 



1 as 



Z26- 



0.3\ 



t/.4 



//B 



o.e\ 



\0.3 



&G 



o./\ 



O.O 



80 



O.O 



/OO.O /oo.o 



G-/Z4£>£& 

 &G9.30ft3WP£ 4&.2\ 



?4.0S7?im4/?£3e./ 



@H<£/ co/u. /«?.-? Hi 



Fig. 5. — Diagram showing the variations in the commercial sizes and grades of fruit on the 10 heaviest 

 producing trees in comparison with the 10 lowest producing ones in the investigational performance- 

 record plat of Valencia oranges. The percentages are calculated from the number of fruits in the average 

 crop per tree for a 4-year period. Figure 4 shows similar variations based on the weight of the crop. 



Figure 7 shows graphically the relative number of variable fruits 

 in the total crops of trees of the various strains of the Valencia orange 

 occurring in the investigational performance-record plat. The dia- 

 gram illustrates very well the comparative freedom from such fruits 

 which characterizes the trees of the Valencia strain of this variety 

 and the larger proportions of variable fruits which occur in the poorer 

 and more undesirable strains. It is interesting to note that on 

 the trees of the Barren strain, in addition to the almost entire lack 

 of a crop of any sort, 84.3 per cent of what was produced was made up 

 of sporting fruits. In counting the variable fruits on a tree only 

 those showing some variation from the general type of the fruits 



