12 



BULLETIN 813, U. S. DEPAETMENT 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 

 givenin 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, Eureka. Grower, National Orange Co. Location, Corona, Calif. 

 Grove, Chase plantation. Plat, ■;,$• Row, 75. Tree, 10. 





Date, season of 1915-10. 



Total 



Character of data. 



July 

 22. 



Aug. 

 2S. 



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 

 25-10 







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 

 160 







Total 



26 



70 



97 



163 



87, 



182 



So 



85 



57 



165 



316 



138 



1,471 







Average number of 

 seeds: 



Green grade 



Tree-Ripe grade . . . 

 Cull grade 



10 



5 



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: 

 Collared 







1 



1 

 



1 



0, 





 













 

 









 











2 

 





 



1 







3 



3 



-; 











1 



2 



1 



I 







- 

 









 1 

 







, 

 



15 



11 



3 

 2 

 









 



17 



12 



6 

 

 









 1 



G 



3 



7 

 



1 







1 







9 









 



7 









 



IG 







1 

 2 

 9 



2 





 



2 



1 





 

 











1 



74 



Collared and pro- 



30 



Protruding bios- 



24 



Raised rid?e. .. 



Ridged. . .. ... 



8 

 20 



Ridged and col- 



2 



Ridged and pro- 



1 





2 



4 







Total 



3 







^ 6 1 7 



4 



8 



31 



36 



IS 



16 



30 



4 



l!)3 







An important consideration in obtaining reliable individual-tree 

 performance records is that the data be obtained and recorded in the 

 field, at first hpaid, v/hile the observations are- fresh and clear. Jn 

 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-vrorking, 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. 



