JAKRINC FOR THM ( !'l:< I/LIO. 
175 
Table LXXXVTII 
■Results of jarring Elberta peaches for fhf plum curculio, Barnes- 
vilte, <'■«.. 1910. 
Plat 
No. 
Treatment. 
Jarred. 
Tree 
No. 
Total 
num- 
ber of 
fruit. 
857 
1,845 
1,286 
1,076 
606 
529 
615 
547 
434 
439 
295 
159 
4^0 
355 
519 
486 
47S 
202 
413 
112 
Total 
num- 
ber of 
fruit in- 
fested. 
11,793 
4S 
80 
1 1 5 
168 
19 
12 
Aver- 
age per- 
centage 
of 
sound 
fruit. 
2 

3 
1 
3 
2 
9 
6 
3 
4 

95.57 
Plat 
No. 
II. 
Treatment. 
Untreated. 
Total 
Tree num- 
Xu. ber of 
fruit. 
Total 
num- 
ber of 
fruit in- 
fested. 
f 1 
961 
2 
1 . 890 
3 
1,123 
4 
1,238 
5 
364 
491 
7 
410 
- 
n 
9 
470 
10 
637 
11 
181 
1-' 
726 
13 
421 
14 
706 
15 
39S 
16 
256 
17 
424 
18 
178 
19 
633 
i 20 
- 
12,553 
299 
137 
147 
46 
95 
4> 
49 
48 
54 
18 
A ver- 
of 
sound 
fruit. 
85.91 
Comparing the amount of uninfested fruit from the two plats, 
there is shown a gain in favor of jarring of 9.66 per cent of the crop, 
an amount quite insufficient to compensate for the cost of the work. 
During 1909 Mr. W. W. Chase, 1 of the Georgia State Board of 
Entomology, following a plan outlined by the Bureau of Entomology, 
jarred a block of 1,200 Elberta peach trees. The work of jarring, 
although carried out irregularly on account of scarcity of suitable 
labor, nevertheless gave results of interest. The block of trees 
used was 40 by 30 rows and paralleled a piece of woods, being separ- 
ated only by a farm road. Rows were numbered from 1 to 30, 
beginning with the one parallel to the wood... In the jarred block. 
10 trees were selected for making examinations of all of the fruit 
and 8 trees were selected from a nearby section of the orchard, 
untreated. 
As stated in the table, a total of 4,338 peaches was examined from 
the 10 jarred trees, of which 1,739 were infested, giving a percentage 
of sound fruit of 59.91. From the unjarred block of S trees a total 
of 2,515 fruits was taken, 1,664 being infested, giving a percentage 
of sound fruit of 33.84, a difference in favor of jarring o{ 26.07 per 
cent. 3 
1 Hul. 32, Ga. State Bd. Entomology, p. 29, 1910. 
-In the publication cited an error in computation manifestly exists where a benefit of 8 percent is 
stated in text, though a loss of percent is given in the table, while a correct computat ion from the 
numbers given of infested and uninfested fruit shows a benefit of 26 per cent. 
