JARRING FOR THE CURCULIO. 175 
TaBLeE LXXXVIII.—Results of jarring Elberta peaches for the plum curculio, Barnes- 
ville, Ga., 1910. 
| : 
™ Aver- Aver- 
ae : Total aor age per- aoe Total Jota age per 
a ‘ree | num- ss centage || Plat | ..,. ree | num- : centage 
No. | Preatment. arial Howat Pete of) WN: Treatment. | yo | per of As, ee of 
fruit. | fasted ‘| sound || | fruit. rented. | sound 
ree. aru | | we” | fruit. 
1 857 oh eee | 1 961 0 eee 
2 1,845 BOR Soe see | 2] 1,890 200 ic aeee tale 
3 1, 286 1 bE Seo 3 1,123 LIS Y fas eee ae 
4 1,076 168i Po ee 4 1, 238 ey al Se 
5 606 nt: Ml eee 5 | 364 Ud Bye es 
6 529 D7 Sonat 6 | 491 95: ||-eeasee = 
7 615 Ths cases Te 410 ze eee 
8 547 Di Neseeai ara 8 | 675 40S de semtee 
9 434 1 Ree 9 470 48 Sie cities 
10 439 OnE Seats y 10 637 Of ||. eee 
ies), earned. =. - ll 295 ae liera bre | II...| Untreated ___ ll 184 18 ce see 
1) 12 159 A HAe a aes 12 726 Bobi eee 
1} 13 | 480 11338 Legere 13 421 65:|: pees 
14 | 355 a eee 14 706 $0) ||. eee 
15 519 2 aces. 2 15 398 19))| seer 
15 486 Srl eee ort 16 256 ye Ee eee 
17 478 Oh Ss Ses 17 424 (oy LR eee 
18 262 Giles esses 18 178 GLb Aes. 
19 413 1S Yi aa ees 2 | 19 | 633 Biel ee 
20)| 12 AG oes 20| 368 35: |Eaaeee 
| 11,793 | 522 | 95.57 | 12,553 | 1,769 | 85.91 
| 1 
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,' 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 woods. 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 8 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 of 26.07 per 
cent.” 
1 Bul. 32, Ga. State Bd. Entomology, p. 29, 1910. 
2Tn the publication cited an error in computation manifestly exists where a benefit of 6 per cent is 
stated in text, though a loss of 6 percent is given in the table, while a correct computation from the 
numbers given of infested and uninfested fruit shows a benefit of 26 per cent, 
