12 
BULLETIN 813, IT. S. DEPARTMENT OF AGRICULTURE. 
Table V. — Performance record of lemon tree number 34-75-16, Eureka strain, showing 
the weight and the number of fruits of each grade and the number of seeds 'per fruit pro- 
duced each month during the season of 1915-16. 
[This record illustrates the form used to assemble the data for each tree for each season. In practice the 
variable fruits produced by the tree each month are recorded on the back of the form. The weights are 
given in pounds and ounces. This tree is listed in rank 35 in Tables VI and VIII and in figure 9.] 
Date, 1915-16. Variety, Eureka. Strain, 
Grove, Chase 
Eureka. Grower, National Orange Co. 
plantation. Plat, 34. Row, 75. Tree, 
Location, Corona 
16. 
Calif. 
Date, season of 1915-16. 
Total 
Character of data. 
July 
22. 
Aug. 
28. 
Sept. 
24. 
Oct. 
27. 
Nov. 
24. 
Dec. 
22. 
Jan. 
31. 
Mar. 
1. 
Mar. 
24. 
Apr. 
28. 
May 
27. 
June 
29. 
aver- 
age. 
Weight of fruits: 
Green grade 
Tree-Ripe grade... 
2- 7 
3- 
0- 4 
10-10 
4-12 
1- 5 
16-13 
4-15 
1- 
32-11 
4- 5 
1-10 
4-14 
14-10 
1- 4 
3-11 
33-11 
0- 2 
15- 2 
3-12 
0- 7 
19-11 
1- 6 
0- 7 
13-14 
0- 
0-15 
39- 9 
3- 1 
1- 2 
30-10 
33- 4 
6-10 
8- 7 
9- 9 
10- 8 
198- 7 
116-5 
2.5-10 
Total 
5-11 
16-11 
22-12 
38-10 
20-12 
37- 8 
19- 5 
21- 8 
14-13 
43-12 
70-8 
28- 8 
340- 6 
Number of fruits: 
Green grade 
Tree-Ripe grade... 
10 
14 
2 
39 
22 
9 
65 
24 
8 
129 
21 
13 
19 
60 
8 
14 
167 
1 
55 
28 
2 
73 
9 
3 
52 

5 
145 
13 
7 
121 
154 
41 
33 
44 
61 
755 
556 
1G0 
Total 
26 
70 
97 
163 
87 
182 
85 
85 
57 
165 
316 
138 
1,471 
Average number of 
seeds: 
Green grade 
Tree-Ripe grade... 
10 
8 
6 
11 
5 
7 
3 
1 
10 
3 
5 

7 
6 

4 
3 

5 
3 

5 
5 
12 
17 
5 
10 
16 
8 
8 
4 
9 
15 
6.83 
6.18 
7.08 
Total 
25 
22 
11 
18 
13 
7 
8 
10 
29 
32 
32 
28 
6.71 
Variable fruits: 

1 
1 

1 













2 

2 


2 
1 

3 
3 




1 
2 
1 







1 




15 
11 
3 
2 




17 
12 
6 




1 
6 
3 
7 

1 

1 

9 



7 



16 

1 
2 
9 
2 


2 
1 





1 
74 
Collared and pro- 
30 
Protruding bios- 
24 
Raised ridge 
8 
20 
Ridged and col- 
2 
Ridged and pro- 
1 
4 
Total 
3 

6 
7 
4 
8 
31 
36 
18 
16 
30 
4 
163 
An important consideration in obtaining reliable individual-tree 
performance records is that the data be obtained and recorded in the 
field, at first hand, while the observations are. fresh and clear. Tn 
these studies the notes were made during the actual work of picking 
and classifying the fruits. It frequently happens that in the selection 
of parent trees as sources of bud wood or in selecting inferior trees for 
top-working, the final choice is strongly influenced by notes concern- 
ing the tree behavior and characteristics of fruiting. The close obser- 
vation of tree and fruit characteristics during a considerable period of 
time results in the development of an intimate tree knowledge, which 
is invaluable in the work of caring for the individual tree and in 
drawing conclusions as to the value of individual trees and strains for 
fruit production. 
