FROST PROTECTION IN LEMON ORCHARDS. 
15 
Table XI. — Total estimated production by grades from plat 7, an acre of Eureka lemon 
trees, for each picking during the calendar year 1913, 
[The data in this plat were computed from the individual-tree records of ten Eureka lemon trees. This 
plat was heated during the winter of 1912-13 and was selected for comparison with plat 5 in an orchard 
of Eureka lemon trees which was inadequately heated during the winter of 1912-13 and with plat 3 in 
an orchard of Eureka lemon trees which was not heated during that same period. The data from plat 5 
are presented in Table IX and from plat 3 in Table VII.] 
Classification. 
Date of picking. 
Total 
for 
year. 
Mar. 7. 
Apr. 3. 
May 21. 
Jime 24. 
Aug. 11. 
Sept.l2. 
Oct. 26. 
Dec. 12. 
Number of fruits: 
Green grade 
42,480 
48, 540 
3,970 
3,800 
3,780 
2,250 
3,490 
3,270 
2,110 
3,650 
1,260 
2,620 
2,150 
4,870 
3,020 
1,320 
62, 260 
Tree-Ripe grade 
70,320 
Total merchantable 
fruit. . . .. 
91,020 
7,770 
6,030 
6,760 
5,760 
3,880 
7,020 
4,340 
600 

132, 580 
Cull grade 

6,020 
1,080 

2,580 
10 
430 

650 

300 
20 
4,480 

10, 120 
6,050 
Total 
97,040 
8,850 
8,620 
7,190 
6,410 
4,200 
11,500 
4,940 
148, 750 
Weight of fruits: 
Green grade 
Lbs. oz. 
11,528 12 
10,170 
Lbs. oz. 
995 
702 8 
Lbs. oz. 
990 
451 4 
Lbs. oz. 
919 6 
677 8 
Lbs. oz. 
500 
620 
Lbs. oz. 
263 2 
382 8 
Lbs. oz. 
515 10 
746. 4 
Lbs. oz. 
820 10 
335 10 
Lbs. oz. 
16 532 8 
Tree-Ripe grade 
14,085 10 
Total merchantable 
fruit 
21,698 12 
1,697 8 
1, 441 4 
1,596 14 
1,120 
645 10 
1,261 14 
1,156 4 
30,618 2 
Cull grade 

841 4 
140 10 

372 8 
1 4 
57 8 

82 8 

35 10 
2 8 
369 6 

96 4 

1,154 6 
Frozen grade . . 
845 
Total 
22,540 
1,838 2 
1,815 
1,654 6 
1,202 8 
683 12 
1,631 4 
1,252 8 
32,617 8 
Table XII. — Total estimated production, hy grades, from plat 8, 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 6 in an 
orchard of Lisbon lemon trees which was heated during that period. The data from plat 6 are presented 
in Table X.] 
Classification. 
Date of picking. 
Total for 
Mar. 10. 
Nov. 10. 
Dec. 18. 
year. 
Number of fruits: 
2,130 
1,570 
5,780 
30 
16,450 
70 
24,360 
1,670 
Tree- Ripe grade 
Total merchantable fruit 
3,700 
5,810 
16, 520 
26, 030 
Cull grade 

116,670 
120 

170 

290 
Frozen grade 
116,670 
Total 
120, 370 
5,930 
16, 090 
142, 990 
Weight of fruits: 
Lbs. oz. 
477 8 
306 4 
Lbs. oz. 
1,538 2 
5 10 
Lbs. oz. 
4,417 8 
16 14 
Lbs. oz. 
6,433 2 
328 12 
Tree-Ripe grade ... 
Total merchantable fruit 
783 12 
1,543 12 
4,434 6 
6, 761 14 

13,685 10 
13 12 

23 12 

37 8 
13, 685 10 
Total 
14,469 C 
1,557 8 
4, 458 2 
20,485 
