24 
BULLETIN 1482, U. S. DEPT. OF AGRICULTURE 
culio, brown rot, and scab. All peaches which dropped from these 
record trees were collected at intervals and examined for data re- 
lating to the curculio infestation. In the season of 1924, 135,967 
peaches were cut open to obtain data for study. All the spraying 
and dusting were done with large power machines. The same 
spray men conducted the work throughout the season. 
Tables 15, 16, and 17 present the results, in terms of percentages, 
of the experiments conducted on the Hiley peaches in 1924. Table 
15 presents the data obtained from cutting open the fruit harvested 
from the record trees of each plat, Table 16 the percentages of cur- 
culio-infested fruit that dropped to the ground from the record trees 
in each plat before harvest, and Table 17 the commercial results in 
merchantable and cull fruit from all the trees in each plat. 
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Fig. 10.— Diagram of orchard of Elberta peaches, used for ex- 
periments in the season of 1924. Each tree is represented 
by a circle, the solid black circles representing record trees 
Table 15. — Summary of results of experiments in peach dusting and spraying at 
Fort Valley, Ga., in 1924; fruit harvested from record trees of the Hiley variety 
Percentage of total fruit having— 
Percentage 
s 
of total 
•r— 1 
fruit as 
fl 
c 
graded be- 
2 
3 
fore being 
Curculio larvae 
o 
M £ 
opened for 
and— 
+= 
- - 
~ 
examina- 
+2 
S 
_., o 
i-3 
Plat 
5 
-z 
.Q 
§ 
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c h 
n-ro 
pun 
otal 
soun 
5 
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"3 
o 
3 
£ 
8 
a 
-a 
03 
8.G 
C o 
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a 
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• 03 
s 
a 
£3 
c 
CD 
fcfi 
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S 
03 
ll 
a 
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03 
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o 
se 
o 
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w 
s 
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rj 
pq 
m 
U 
pq 
m 
pq 
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I 
8, 107 
6, 485 
3.9 
1 3 
2.3 
. 7 
8.6 
1 7 
3.3 
1 ? 
1.9 
7 
8.0 
1.6 
0.1 
0.4 
1 
0.2 
0.1 
S6 
95. 4 
96.2 
4.6 
II 
96.4 
3.8 
III 
7,409 
4 6 
1 6 
9 1 
3 9 
1 3 
8.3 
6 
9, 
.1 
85.6 
96.4 
3.6 
IV 
9.042 
9 8 
1 fi 
3 7 
? 6 
1 5 
3.6 
.1 
.1 
92.1 
95. 7 
4.3 
Vi 
4,233 
10.5 
16.1 
71.5 
2.0 
5.1 
55. 5 0. 4 
.3 6.0 
8.5 
7 
1.1 20.4 
77. 9 
22.1 
i Check plat; not spra3~ed or dusted. 
