BUD VARIATION IN THE MARSH GRAPEFRUIT. 
103 
first grade was produced by the trees of the Marsh strain, and this 
strain also bears the best quality fruit. The low proportion of first- 
grade fruit produced by the trees of the Rough Seedy strain was very 
% SECOND 
GRADE 
%CULL GRADE 
4/6 m^m 
8.3 mm 
42.1 'nm 
/J!JH 
46.7 wmna 
so.sTmam 
6.6 H 
III HI llll 
B /PPtStMSI 
63.4ms^sm 
na//?/?BHn 
%F/RST GRADE 
/S MARS/i STRAW 5J.5HBBHB 
/ SMOOTH SEEDY STRA/N 493 1 
5 ff/GHEST, PRODUC/NG , 48.91 
(ALL MAHStt STIfAMj 
/ ROUG/i STRA/N 
5 LOWEST PRODUC/NG 
4 ROUGH SEEDY STRA/N 
4S.S\ 
30.0\ 
2S.2\ 
P20929HP 
Fig. 5. — Average annual proportions of fruit of the different commercial grades in the crops of the trees 
of the various strains of Marsh grapefruit occurring in the investigational performance-record plat A in 
a grove planted in 1898. The percentages are based on the average weights of the crops for the 6-year 
period, 1910 to 1915, inclusive, except that the data regarding culls cover only the 4-year period, 1912 to 
1915, inclusive. 
noticeable. Figure 6 shows that in plat B there was practically no 
difference between the trees of the different strains in their propor- 
tions of fruit of the different grades. 
%E/RST GRADE 
% SECOND GRADE %CULL GRADE 
5 L OWE ST PPODUC/NG 
3 UNPRODUCT/l/E STRA/N 
40 MARS/i STRA/N 
9 ALTERNATE-BEARING STRA/N 
S WG/iEST, PPODUC/NG , 
(ail mabsh strain; 
67.4 wm 
66.4 'jm 
66/\ 
6S.8\ 
64.3 \ 
P20928HP 
Fig. 6. — Average annual proportions of fruit of the different commercial grades in the crops of the trees 
of the various strains of Marsh grapefruit occurring in the investigational performance-record plat B in 
a grove planted in the fall of 1903. The percentages are based on the average weights of the crops for 
the 6-year period, 1910 to 1915, inclusive, except that the data relating to culls cover only the 4-year 
period, 1912 to 1915, inclusive. 
Table V. — Average total annual crop per tree of the different strains of Marsh grape- 
fruit in investigational plats A and B, showing production by grades of fruit for the 
6-year period, 1910 to 1915, inclusive. 
Num- 
ber of 
trees. 
Average annual production. 
Description of trees. 
Total crop. 
First grade. 
Second grade. 
Cull grade.! 
Weight. 
Num- 
ber. 
Weight. 
Num- 
ber. 
Weight. 
Num- 
ber. 
Weight. 
Num- 
ber. 
Investigational plat A: 
Highest producing (all 
5 
1 
19 
4 
5 
1 
5 
40 
' 9 
5 
3 
Lbs. 
441.8 
404.5 
381.2 
223.2 
223.0 
222.4 
218.2 
161.6 
151.5 
99.9 
89.7 
565 
531 
474 
265 
261 
248 
263 
195 
191 
119 
106 
Lbs. 
216.1 
184.2 
203.9 
56.2 
66.9 
109.7 
140.3 
106.7 
99.7 
67.3 
59.6 
251 
225 
225 
64 
73 
111 
158 
120 
116 
75 
65 
Lbs. 
206.3 
204.1 
158.5 
141.5 
132.2 
95.0 
69.7 
49.5 
46.4 
28.8 
26.8 
268 
269 
203 
156 
146 
105 
86 
62 
61 
35 
32 
Lbs. 
29.1 
24.3 
28.2 
38.2 
35.9 
26.6 
12.3 
8.0 
8.0 
5.6 
5.0 
70 
55 
70 
Rough Seedy strain 
Lowest producing 
Smooth Seedy strain 
Investigational plat B: 
Highest producing (all 
68 
64 
48 
28 
20 
Alternate-Bearing strain. . 
Lowest producing 
Unproductive strain 
20 
14 
13 
These data relating to cull fruits cover only four years, 1912 to 1915, inclusive. 
