16 



BULLETIN 821, TJ. S. DEPARTMENT OF AGRICULTURE. 



Table XIII. — Total estimated production, by grades, from plat 9, an acre of Lisbon 

 lemon trees, for each picking during the calendar year 1913. 



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

 plat was heated during the winter of 1912-13 and was selected for comparison with plat 10 in an orchard 

 of Lisbon lemon trees which was not heated during that period. The data from plat 10 are presented 

 in Table XIV.] 



Classification. 



Date of picking. 



Total for 



Mar. 12. 



Apr. 3. 



May 13. 



June 25. 



Aug. 12. 



Sept.l3. 



Oct. 25. 



Dec. 12. 



year. 



Number of fruits: 



64, 440 

 80,100 



10, 270 

 2,310 



23,080 

 2,030 



19,580 

 21,920 



4,900 

 6,400 



2,950 

 3,620 



220 

 1,050 



3,320 

 200 



128,760 

 117,630 



Tree- Ripe grade 



Total merchantable 

 fruit . 



144,540 



12,580^ 



25, 110 



41,500 



11,300 



6,570 



1,270 



3,520 



246, 390 







Cull grade 







8,380 



890 

 60 



2,630 

 10 



1,870 

 40 



640 

 



6C0 

 



2,310 

 



70 

 



9,070 

 8,490 









Total 



152, 920 



13,530 



27,750 



43,410 



11,940 



7,230 



3,580 



3,590 



253, 950 







Weight of fruits: 



Green grade 



Lbs. oz. 

 16,752 8 

 15,280 10 



Lbs. oz. 



2,513 2 



440 



Lbs. oz. 



5,744 6 



449 6 



Lbs. oz. 

 4,935 

 4,303 12 



Lbs. oz. 

 1,170 

 1,246 14 



Lbs. oz. 

 621 4 

 575 10 



Lbs. oz. 

 57 8 

 157 8 



Lbs. oz. 



868 12 



50 10 



Lbs. oz. 

 32,662 8 



Tree-Ripe grade 



22,504 6 



Total merchantable 

 fruit 



32,033 2 



2,953 2 



6,193 12 



9,238 12 



2,416 14 



1,196 14 



215 



919 6 



55,166 14 







Cull grade 







924 6 



120 10 

 8 12 



412 8 

 2 8 



222 8 

 5 10 



93 2 

 



84 6 

 



120 

 



10 

 



1,063 2 



Frozen grade 



941 4 







Total.... 



32,957 8 



3,082 8 



6,608 12 



9,466 14 



2,510 



1,281 4 



335 



929 6 



57,171 4 







Table XIV. — Total estimated production, by grades, from plat 10, an acre of Lisbon 

 lemon trees, for each picking during the calendar year 1913. 



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

 plat was not heated during the winter of 1912-13 and was selected for comparison with plat 9 in an 

 orchard of Lisbon lemon trees which was heated during that period. The data from plat 9 are presented 

 in Table XIII.] 



Classification. 



Date of picking. 



Total for 



Mar. 12. 



May 13. 



June 26. 



Dec. 1. 



year. 



Number of fruits: 



Green grade ; 



3,470 

 4,460 



160 

 10 



450 

 1,510 



3,090 

 170 



7,170 



Tree- Ripe grade 



6,150 







Total merchantable fruit 



7,930 



170 



1,960 



3,260 



13,320 





Cull grade 





 155, 230 



90 

 



120 

 40 



80 

 



290 



Frozen grade 



155, 270 







Total 



163, 160 



260 



2, 120 



3,340 



168, 880 







Weight of fruits: 



Green grade 



Lbs. oz. 

 810 10 



782 8 



Lbs. oz. 



35 



1 14 



Lbs. oz. 

 107 8 

 251 14 



Lbs. oz. 



865 



27 8 



Lbs. oz. 

 1,818 2 



Tree- Ripe grade 



1,063 12 







Total merchantable fruit 



1,593 2 



36 14 



359 6 



892 8 



2,881 14 







Cull grade 





 14,475 10 



13 12 

 



11 14 

 4 6 



9 6 

 



35 



Frozen grade 



14, 480 







Total 



16,068 12 



50 10 



375 10 



901 14 



17,396 14 





In studying the figures presented in the accompanying tables it will 

 be seen that in all the nonheated plats large numbers of frozen 

 fruits were taken from the trees during the first six months following 



