18 
BULLETIN 1482, U. S. DEPT. OF AGRICULTURE 
Table S. — -Summary of result* of experiments in peach dusting and spraying at 
Fort Valley, Ga., in 1923: fruit harvested from record trees of the Hiley variety 
Percentage of total fruit having— 
o 
Percentage 
f 
of total 
fruit as 
go c 
graded be- 
Curculio larva? 
and— 
c u 3 
fore being 
opened for 
examina- 
Plat 
3 
a 
c 
.a 
5 
g"| o| Z = 
tion 
8 
>> 
~z 
"O 
S " £.a ""* 
— 
a 
> 
| 
1 
c 
— m 
2 
c 
o 
a 
_ c 
a 
2 ° 
-- 
- 
a -^ 
£ 
2 
= 
2 
s 
•i 
2 
2 
t-, 
,a 
£ 
c 
i-i 
n 
5 
o 
I 
ffl 
"5 
U 
pq 
m 
o 
pq 
QQ 
PQ 
X 
- 
- 
GO 
- 
O 
j 
2.861 
0. 9 5. 8 
18 6 
fi 
3 1 
16.1 
ft 4 
? 
1 
77 fi 
90.8 
9.2 
II 
3,333 
1.3 
1.8 
20.4 
.8 
1.1 
19.4 
0.3 
.5 
.2 
77.7 
93. 2 6. 8 
III 
L5S5 
1.5 
?, 7 
7 7 
1 ?. 
2 1 
7.0 
.2 
. 5 
.1 
8S 9 
93. 5 6. 5 
IV 
3,936 
1.8 
3.0 
14.0 
1.4 
2.1 
13.2, 
.1 
.6 
.2 
.1 
82.3 
93. 7 6. 3 
V 
1,023 
.6 
2.2 
7.0 
.4 
1.6 
6.4 
.1 
.5 . : 
90.9 
94 7 5.3 
VI . 
4,813 
3.709 
1. 5 
10.2 
17.8 
1.0 
7 4 
15.0 
.2 
2. 5 .2 
. 1 
73. 6 
71, fi 
88. 3 11. 7 
VII i 
6 8 
23 
5.4 
?1 6 
1.4 
91. 9 8. 1 
vni-> 
4.194 
6.4 
30.6 
92.5 
.2 
4.4 
63.8 
0.2 
3.0 
23. . 5 2. 5 
2.4 
56.0 44.0 
IX 
880 
3.6 
2.3 
7.5 
2.9 
1.9 
6.9 .1 

.4 
.1 .2 [87.5 
90. 3 9. 7 
Xo records on curculio infestation taken for this plat. 
Check plat; not sprayed or dusted. 
Table 9. — Number of peaches dropping from Hiley peach trees and percentage of 
them infested by curculio in experimental orchards at Fort Valley, Ga., 1923 
Total per- 
Total 
centage of 
Plat 
' number of 
drops in- 
drops 
fested by 
curculio 
I 
1.304 
9.4 
n 
1.467 
13.2 
in 
1. §22 
16.3 
IV 
1, 493 
13.1 
v 
644 
33.1 
VI 
2,933 
15.8 
Yin 
2,637 
35.9 
IX 
444 
8.8 
Table 10. — Commercial results of fruit from all trees in each plat of the Hiley 
variety used in the peach-spraying and dusting experiments. Fort Valley, Ga., 
1923 
Plat 
Xumber 
of trees 
in plat 
Average 
merchant- 
able fruit 
per tree 
(expressed 
in cups; 
six cups 
equal one 
crate) 
Average 
cull fruit 
per tree 
(expressed 
in cups; 
six cups 
equal one 
crate) 
I 
n 
ni 
IV 
Vi . . 
141 
158 
165 
159 
77 
166 
157 
68 
8.90 
10.85 
14. 35 
13.25 
7.20 
14.30 
11.30 
7.05 
0-95 
.85 
.95 
.90 
.40 
1.90 
.95 
5.50 
.50 
VI 
VII -' 
VIII - 
IX' 
73 
5.60 
1 Light crop in 1923 because of severe defoliation in 1922 from the mixture of sulphur, lime, calcium case- 
mate, and arsenate of lead mentioned on p. 10. 
- Fruit damaged by curculio not graded out on this plat. 
• In two portions, in opposite corners of the orchard. 
