102 BULLETIN 697, IT. S. DEPARTMENT OF AGRICULTURE, 
In Table V and the corresponding diagrams, figures 3 and 4, the 
trees in the two performance-record plats are grouped by strains, 
and the average annual production of the individuals of each group 
is expressed. Groups are included which comprise the five highest 
producing and the five lowest producing trees irrespective of their 
rmsr grade second grade cull grade 
(all maXSH STBAih) 565 I I 25/ 1 J tfOO I 1 10 I 1 
Z84.2 El 204./ BBS 24.3 I 
/ BOUGH STRAW ~*~S3/ ' ' 225 ' ' 269 ' I .fi" □ 
I 282 I 
/9 MARSH STBA/N "^i i JVc i " -i ^? i i 70 CD 
TOTAL CROP 
4 4/. a ■■■■■■■■ 
cxc \ 1 
404.5 III [■Illllll Pill 
5" J/ I ' 
j^/.? ^mtamasm 
A?J-.^ BSSKQ 
<?ff5 1 1 
,?i>J.0 sannBH 
<?67 1 '1 
222.4 maaevm 
248 \ 1 
38.2 U 
4 ROUGH, SEEDY STRA/N "/,;, ■ ~ #4 C3 (56 i~ 1 <5<ff CD 
^i" 1 
Z58.5 
56.2 m 
64 □ 
Z4/.5 
(56 
7J" CH 
/322 
/46 
/0j>.7 na 
/// 1=1 
95.0 
/OS 
35.9 
5 LOWEST RR0DUC//VG ££ t \ — h 73 d /46 EZZD 64 CD 
26.6 I 
/ SMOOTH, SEEDY STRAW "^ f— , /// ^Z /OS CCD 48 □ 
eb POUNDS 
CD TRU/TS 
P20930HP 
Fig. 3. — Average annual crop of the individual trees of the different strains of Marsh grapefruit occurring 
in the investigational performance-record plat A in a grove planted in 1S98, being a summary of data 
for the 6-year period, 1910 to 1915, inclusive, except that the data relating to culls covers only the 4- 
year period, 1912 to 1915, inclusive. 
strain, and it is worthy of note that the trees showing the highest 
production in both plats are all of the Marsh strain. The average 
production of the trees of the Marsh strain is shown to be greater 
than the average for any other strain in the same plat. The crop of 
the one tree of the Rough strain in plat A can not fairly be considered 
comparable to the averages shown for the other strains. 
TOTAL CROP E/XST GRADE SECOND GRADE CULL GRADE 
S H/GHEST PRODUC/NG 2/8.2 — ■ /40.3 — 69.1 B /2.3 I 
Call maw st*a,»J 263 \ ' tS8 I J 86 CCD 28 Q 
40 MARSH STRAIN 
S ALTERNATE-BEAR/A/G STRA/N 
S LOWEST PRODUCING 
(95 I ~i /20 I 1 62 CD 20 D 
/S/.S HE3I 93.1 mm 46.4 B 8.0 1 
/S/ I I //6 I I 6/ CD 20 Q 
99.9 mm 613 mm 28.8 ■ 5.6 \ 
t/9 I 1 IS CD 35 D /4 
J UNPRODUCTIVE STRA/N *% "" **5 g *«£ " *J [ 
H POUNDS 
□ ERU/TS 
P209I9HP 
Fig. 4. — Average annual crop of the individual trees of the different strains of Marsh grapefruit occurring 
in the investigational performance-record plat B in a grove planted in the fall of 1903, being a summary 
of data for the 6-year period 1910 to 1915, inclusive, except that the data relating to culls covers only the 
4-year period, 1912 to 1915, inclusive. 
Figures 5 and 6 show the average annual proportions of fruit of the 
different grades in the crops of the trees of the various strains occur- 
ring in the investigational performance-record plats, based on the 
average weights of the crops for the six years, 1910 to 1915, inclusive. 
Figure 5 shows that in plat A the highest proportion of fruit of the 
