132 
Journal of Agricultural Research voi. viii, n 0 . 4 
Table III .—Composition of Valencia oranges fertilized differently 
Fertilizer and plot. 
Crop of 1914. 
Crop of 1915. 
Spe¬ 
cific 
grav¬ 
ity. 
Juice. 
Sugar. 
Acid. 
Nitro¬ 
gen. 
Specific 
gravity. 
Juice. 
Sugar. 
Acid. 
Nitro¬ 
gen. 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
cent. 
cent. 
cent. 
cent. 
cent. 
cent. 
cent. 
cent. 
Dried blood, plot C. 
0.92 
52. 5 
8.68 
b. 97 
o-116 
0.92 
53-6 
8-37 
o- 66 
0.128 
Nitrate of soda, plot H. 
.92 
52.0 
8.40 
1. or 
.130 
.91 
52.8 
7.01 
• 74 
•139 
Dried blood, plot S. 
.89 
. 47-4 
7.84 
•97 
.124 
.91 
48.9 
9. 26 
•78 
.141 
Average. 
.91 
50.6 
8.31 
.98 
• 123 
.91 
51.8 
8. 21 
• 73 
.136 
Sulphate of potash, plot D. 
•94 
53-3 
9.04 
.98 
.089 
•95 
55-3 
9.09 
. 60 
. 080 
Muriate of potash, plot I. 
.92 
52.0 
8- 59 
•97 
•095 
•94 
56- 7 
9. 28 
.67 
.094 
Sulphate of potash, plot R.. 
.90 
49.4 
8.22 
.96 
. 107 
.92 
53-8 
8.94 
•67 
.099 
Average. 
. 92 
S i.6 
8.62 
•97 
.097 
•94 
55-3 
9.10 
.65 
. 091 
Steamed bone, plot E. 
.91 
52-5 
•8. 66 
.92 
• 095 
•93 
53-3 
9.16 
.64 
. 108 
Superphosphate, plot J. 
.91 
50.1 
8.46 
.96 
. 108 
•94 
54-8 
9-39 
.68 
. 119 
Superphosphate, plot N. 
.91 
51.0 
8. 24 
.90 
.089 
•93 
53 -o 
8-95 
•67 
• in 
Steamed bone, plot P. 
.90 
50.0 
7-99 
•94 
. 110 
.92 
SO. 8 
9. 07 
• 7 i 
.114 
Average. 
.91 
50-9 
8-34 
•93 
. 101 
•93 
53-0 
9 -14 
.68 
•113 
Complete fertilizer, plot A. 
•93 
53-9 
8.07 
I. 01 
.124 
.92 
53 - r 
7 - 93 
•76 
.141 
Complete fertilizer, plot Q. 
.89 
47-5 
7.84 
1. OO 
.130 
.91 
48.5 
9. 01 
.81 
. 146 
Average...:. 
.91 
50-7 
7-96 
1.01 
.127 
,92 
50.8 
8-47 
•74 
.144 
Check, plot B. 
.92 
53 -o 
8. 89 
1. 02 
.088 
.92 
55-9 
8. 58 
•65 
.071 
Check, plot M. 
.91 
51.8 
8.39 
•94 
.094 
•93 
56-1 
8. 75 
•67 
•09s 
Check, plot T. 
.90 
49 -1 
8. 26 
.99 
. 104 
•94 
53-6 
10.00 
•65 
.103 
Average. 
.91 
51-3 
8.51 
.98 
• 095 
•93 
55 -a 
9.11 
.66 
.090 
To show still further the specific effect of the nitrogenous fertilizers, 
Tables IV and V have been prepared, in which the plots receiving nitrogen, 
either alone or in any combination, are grouped together and contrasted 
with all the plots not receiving that element. 
Table IV .—Comparison of navel oranges fertilized with and without nitrogen 
crop op 1914 
Fertilized with nitrogen. 
Plot. 
A 
C. 
F 
G 
H 
L 
O 
Q 
S. 
Average.. 
Specific 
gravity. 
o. 90 
•0i 
.90 
.90 
.90 
.90 
.89 
.89 
.88 
Juice. 
P.ct. 
47-3 
47.1 
44 - 7 
46. o 
45 - 5 
47.2 
43-2 
44.8 
44.6 
45-6 
Sugar. 
P.ct. 
9.06 
9.28 
9.08 
9.01 
9. IX 
8- 75 
9.16 
9 - 05 
8.86 
9.04 
Add. 
P.ct. 
1.11 
1.09 
i- 13 
1.02 
1.09 
1.09 
1.14 
i-13 
i-13 
Nitro¬ 
gen. 
P . ct . 
0.087 
.088 
.088 
.091 
• 095 
• 095 
.096 
. 102 
. 102 
094 
Plot. 
B. 
D. 
E. 
I. . 
J. . 
K. 
M. 
N. 
P. 
R. 
T. 
Not fertilized with nitrogen. 
Specific 
gravity. 
Juice. 
Sugar. 
Add. 
Nitro¬ 
gen. 
P.ct. 
P.ct. 
P.ct. 
P.ct. 
0.90 
47-3 
9.04 
1.11 
0.087 
.92 
45-5 
9 * 65 
1.08 
.076 
.90 
46.9 
9.69 
1.01 
.082 
.91 
46.9 
9.44 
1.11 
•075 
.90 
47-5 
8. 79 
1.08 
.081 
.90 
47.8 
8.98 
i-13 
.069 
.89 
46.9 
9.04 
1.07 
.084 
.89 
47.0 
9.00 
1.10 
.070 
.90 
47.8 
9.14 
13 
.082 
.89 
45-9 
9.04 
1.12 
.081 
.88 
45-8 
9-47 
1.12 
. 082 
.90 
46.8 
9.21 
1.10 
.079 
Average. 
