12 



BULLETIN 821, U. S. DEPARTMENT OF AGRICULTURE, 



good fruits, until the December picking, when a total of 9,3.20 mer- 

 chantable lemons is recorded, as compared with no frozen ones. 



Table VI shows the estimated production bj grades for an acre 

 of Lisbon lemon trees (plat 2) during the calendar year 1913. These 

 figures are calctdated from the actual individual-tree performance 

 records of five selected trees in the plat. This orchard was not 

 heated during the winter of 1912-13, but was partially protected by 

 heaters in neighboring orchards. It was selected for comparison 

 with plat 3 in an orchard of Eureka lemon trees which was not heated 

 during that period. 



Table VI. — Total estimated production by grades from plat 2, an acre of Lisbon lemon 

 trees, for each picking during the calendar year 1913. 



[The data in this plat were computed from the in dividual- tree records of five Lisbon lemon trees. This 

 plat was not heated during the winter of 1912-13 and was selected for comparison with plat 3 in an 

 orchard of Eureka lemon trees which was not heated during that period. Plat 2 was partially pro- 

 tected by heaters in neighboring orchards. The data from plat 3 are presented in Table VII.] 



Classification. 



Date of picking. 



Total for 



Feb. 15. 



Apr. 4. 



May 27. 



June 24. 



Aug. 20. 



Nov. 17. 



year. 



Number of fruits: 



16,700 

 120 



33, 160 

 3,340 



15, 700 

 4,400 



6,880 

 2,560 



10,480 

 0,080 



3,480 

 1,860 



SO 400 



Treo-Ripe grade 



18,360 







Total merchantable fruit. 



16,820 



, 36,500 



20, 100 



9,440 



16,560 



5,340 



101,760 



Cull grade 





 54,220 



780 

 72,640 



1,600 

 7,360 



1,300 

 1,260 



680 

 2,180 



2,220 

 2,360 



6 040 





1-JO' 020 







Total 



71,040 



109,920 



29,120 



12,000 



19, 420 



9,920 



251 420 







Weight of fruits: 



Lbs. oz. 



4,235 



28 12 



Lbs. oz. 



8,621 4 



648 12 



Lbs. oz. 



4,081 4 

 873 12 



Lbs. oz. 



1,742 8 



512 8 



Lbs. oz. 

 2, 251 4 

 1,038 12 



Lbs. oz. 

 901 4 

 328 12 



Lb", oz. 



21 892 8 



Tree- Ripe grade 



3' 431 4 







Total merchantable fruit . 



4,263 12 



9,270 



4,955 



2,255 



3,290 



1,290 



25,323 12 



Cull grade 







5,551 4 



108 12 

 10,413 12 



240 



1,172 8 



143 12 



196 4 



93 12 

 307 8 



333 12 

 337 8 



920 





17,978 12 







Total 



9,815 



19,792 8 



6,367 8 



2,595 



3,691 4 



1, 961 4 



44 222 8 







A study of the figures in Table VI shows that a large percentage 

 of the fruit in the February and April pickings was frozen. The 

 small number of merchantable fruits recorded at the different pickings 

 throughout the year in this plat is due to the fact that the trees were 

 somewhat protected. This plat, like plat 1, had about returned to 

 normal production at the close of the year. 



In Tables VII to XIV, inclusive, the estimated production is 

 shown by grades for plats 3 to 10, inclusive, as described in Table II. 



