22 
BUULETIX 821, X:. S. DEPAETMEXT OF AGEICULTUEE. 
Table XVIII. — Percentages of fruits hy grades produced in the nonheated acre of Lisbon 
lemon trees, plat 10, as compared vnth the heated plat 9, during the calendar year 1913. 
[These percentages are computed from the total number of lemons produced by these plats, as shown in 
Tables XIII and XIV.] 
Grade and condition. 
Date of picldng. 
Mar. 12. 
Apr. 3. May 13. 
1 
June 25. 
Aug. 12. 
Sept. 13. 
Oct. 25. 
Dec. 12. 
Green grade: 
Not heated 
Heated 
2.13 
42.14 
2.73 
52.38 
0) 
75.91 
(}) 
17.07 
61.54 
83.17 
3.85 
7.32 
21.23 
45.11 
71.23 
50.50 
S.04 
§.61 
G) 
40.80 
G) 
50.07 
G) 
6.15 
29.33 
92.51 
92.48 
Tree-Ripe grade: 
Not heated 
Heated 
5.09 
5.57 
Merchantable fruit: 
Not heated 
Heated 
4.86 
94.52 
92.98 
65.39 
9040 
92.46 
95 61 
G) 
94.65 
90.87 
G) 
35.48 
97.60 
98.05 
Cull grade: 
Not heated, 
Heated 


95.14 
5.48 
6.58 
G) 
.44 
34.61 
9.48 

.04 
5.66 
4.31 
1.89 
.09 
G) 
5.36 

G) 
9.13 
G) 

G) 
64.53 
G) 

2.40 
1.95 
Frozen grade: 
Not heated 
Heated 


1 The bulk of the fruits in the nonheated plat were frozen and were removed at the March picking. No 
fruits were taken from the trees during April, August, and September. 
Table XM:II gives 
the percentages of 
fruits by grades for 
each, picking during the 
calendar year 1913 in 
the nonheated plat 10, 
an acre of Lisbon lemon 
trees, as compared with 
plat 9, an acre of heated 
trees. The percentages 
of frozen and mer- 
chantable fruits in 
these plats are shown 
in figure 12. 
LESSONS TAUGHT BY 
THE INVESTIGATIONS 
IN 1913. 
The data presented in 
this bulletin show that 
in the lemon orchards 
imder investigation in 
the Corona district of 
California which were 
Fig. 11. — Diagram prepared from the figures presented in Table j 'xi, £ 
XVn, showing the percentages of merchantable and frozen protected. Wltn a SUI- 
fniits produced on the nonheated acre of Eureka lemon trees, ficicnt number of heat- 
plat 3, as compared with the inadequately heated acre, plat 5, and J • J.1 J" r 
the efficiently heated acre, plat 7, during the calendar year 1913. CTS durmg the irceze 01 
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