126 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
THE PLUM CURCULIO. 
Throughout the season the drop-fruit and the fruit on trees at 
picking time from four of the plats in the Jones orchard were care- 
fully examined as to injury by the plum curculio. The results of 
examinations are given in detail in Table VII. 
TaBLeE VII.—Injury by plum curculio for entire season on Plats I, III, IV, and V, 
sprayed in the codling-moth experiments. Siloam Springs, Ark., 1909. 
PLAT I. ONE-SPRAY. 
Number of punctured and sound fruit, etc., per tree in each plat. 
Tree 1. | Tree 2. | Tree 3. | Tree 4. | Tree 5. | Tree 6. | Tree 7.| Tree 8. 
Number of punctures...............- 1,979} 1,713 | 2,613 683 268 | 1,012 638 1, 200 
Number of fruit punctured.......... 1,179 915 687 387 208 532 370 706 
Number of sound fruit..............- 4,510 |} 3,898} 3,109 | 2,363] 3,238] 3,236 2,937 4, 737 
Number of irtit «fb at z.ssscere eos 5,689 | 4,813} 3,796 | 2,750 | 3,446] 3,768 | 3,307 5, 443 
Per cent free from injury.........-... 79.27 | 80.98 | 81.90} 85.92 | 93.96 | 85.88} 88.81 87.02 
Number of punctured and pound fruit, ete., @getper 
er tree in each plat. 
P — Total for | cent fruit 
plat. free from 
Tree 9. |Tree 10./Tree 11.| Tree 12. | Tree 13. nun. 
Number of punctures.............-.-. 642 319 (oY Ne Sea lee eee a 11709" |e eee 
Number of fruit punctured........... 364 216 BS hye Eas Be oo Ue eee te 53899 doa aes 
Number of sound fruit..........-.-.... 3,280! |p 2,430) |! Zon 000) er cae seme ne ones eS | oe cere. 
Numpberominraith. 2 e-o.-5-.6- cece SHG445 | 2F652 5 SRSO SME Saye: a Re ee ASS 203i hase 
Per cent free from injury............. SONOL:|, “N85: |) OU S9 oe tere ool referee ate ees 86. 34 
PLAT III. ONE-SPRAY. 
Number of punctured and sound fruit etc., per tree in each plat. 
Tree 1. | Tree 2. | Tree 3. | Tree 4. | Tree 5. | Tree 6.| Tree 7.) Tree 8. 
Number of punctures ....-.--.--°2-- 2,321 721 919 788 560 | 1,790 | 1,756 732 
Number of fruit punctured..........- 1,051 349 533 368 358 795 727 372 
Number of fruit free from injury....- 3,698 | 2,339 | 2,211 | 2,284) 1,883 | 2,775} 2,154 1, 620 
Number ofsinuit Sasg-0 \. cease fee 4,749 | 2,688 | 2,744] 2,652 | 2,241 | 3,570} 2,881 1,992 
Per cent free from injury.....-...-.-- 77.86 | 87.01 | 80.57 | 86.12] 84.02) 77.73) 74.76 81.32 
Number of punctured and sound fruit, etc., 
per tree in each plat. Total per 
Total for | cent fruit 
plat. | free from 
Tree 9. |Tree 10./Tree 11.| Tree 12. | Tree 13. injury. 
Number of punctures ...............- DG ZO rene m ictal) See cet Ok les ataleel eoet aa f1,'2165) 52 oeeeee 
Number of fruit punctured..........-. a VASO Re See eal ec aaa ee be cates SE280 i 55 See 
Number of fruit free from injury...... P4903 ic nce Sohenin cell geeetnacee el opis wemierns 20; 457) |eenaeemere 
Number Of iruits sess reese Skee 507410) eS EAE Bacco haas| sabcee eee ceo eeeeee 25 TRL Nocesaeeces 
Per cent free from injury.......--...- 67525 [oo ccrccsliacaeooc|bscoamescclaneeretene [secrete 79. 48 
