1384 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
TABLE XIII.—Injury by plum curculio for entire season, Plats V, VI,and VIII. Crozet, 
Va., 1909. 
PLAT V. DEMONSTRATION. 
Number of punctured and sound apples, etc., per -| Total 
tree in each plat. Total | per cent 
7 a A gee 
ree plats. | free from 
Tree | Tree | Tree | “4 ~~ | Tree | Tree | Tree Tree injury. 
Te i. 6. 7. 8. 
INOn puNectUres-.2- 545+ -- een eee oe 157) 275 | 163'| 524 | 668) 162) 395 || 828] 25672) |2-see esse 
Noiiruit punctured!>:----- 22.2.5. 115 187 103 | 345 463 | VL4s)° 2675) 252") sie 8468 | eae eee 
INORSOUNGNIniiths = secee est eee oer 687 |1,272 | 616 |2,070 |1,569 1,194 |2,747 |2,076 | 12,231 |.......... 
INOS IRUIG Soo 5e fem onis hehe eee 802 1,459 | 719 |2,415 |2,032 |1,308 [3,014 |2,328 | 14,077 |.......... 
Per cent free from injury......--- *.]85. 66 |87.18 |85.67 |85.71 |77.21 |91.28 |91.14 [89.17 |.......- 86. 89 
PLAT VI. ONE SPRAY. 
Nom punctunes22e— a=) ee , 1,290 2,143 | 360 |1,095 | 647) 775) 823] 8,644 |......-... 
No. fruit punctured 1 730 |1,847 | 238 | 719 | 405 | 521) 511 | 5,432 |......__.. 
No. sound fruit__----- Bt ,803 |3,758 |1,080 |2,526 }1,574 |1,520 |1,528 | 15,406 |.......... 
INOMMIDUIt He sate cee eee 7772127578 12533 |5, "105 1,318 |3, 245 |1,979 |2,041 |2,039 | 20,838 |.......... 
Per cent free from injury Boe 71. 17 |73.61 |81.94 |77.84 |79.53 |74.96 |74.93 |.-....-- 73. 93 
PLAT VIII. UNSPRAYED. 
Nos puneturesss. je -s-eeeee eases 2,746 |2,571 | 705 | 962 |2,490 |1,939 |1,865 |2,300 | 15,578 |...-..-.-.- 
No Mirnitipuncturedessn n= -s ose - 125515570 | 437 |) 53l \l)405) 11, 19351, O98 2855) SSiisonlseaeeeeees 
INOSSOUNGHriibe Me oe sesc nse eer 2,168 |2,111 | 379 | 485 |1,696 |1,795 | 882] 806} 10,322 }.......... 
INohiruit cite. seats eetee asee 3,423 |3,682 | 816 |1,016 {3,111 |2,988 1,980 |2,091 | 19,107 |.......... 
Per cent free from injury......-.-.- 63.30 |57.33 |57.33 |46.44 |47.73 |60.00 |44. 54 [38.54 |.......- 54. 02 
(eens = oa 
The percentage of fruit uninjured by the curculio in the demonstra- 
tion block, 86.89 per cent, shows a gain over that of the one-spray 
plat, 73.93 per cent, of 12.96 per cent, and the gain in percentage of 
uninjured fruit on the demonstration over the unsprayed plat is 
32.87. 
ORCHARD OF STRATHMORE ORCHARD COMPANY. 
The orchard of the Strathmore Orchard Company is located near 
Mount Jackson, in the Shenandoah Valley of Virginia. The size of 
the trees and general appearance of the orchard are indicated in 
Plate XI, figure 1. The location of the trees under experiment with 
respect to the rest of the orchard is shown in figure 36. All trees not 
in the experiment were sprayed by the owners. The treatments given 
and dates of application are stated in Table XIV. 
TaBLE XIV.—Dates of applications for codling moth and plum curculio, one-spray 
method. Mount Jackson, Va., 1909. 
Date of application. Plat XIII. (Demonstration.) | Plat XV. (One-spray method.) (ReaD 
First application, May | Notdrenched. Vermorelnoz-| Drenched with arsenate of | Unsprayed. 
6-7 (after falling of zles. Mistspray. Arsenate lead, 2 pounds to 50 gallons 
petals). of lead, 2 pounds to 50 water, Pressure 175 pounds. 
gallons Bordeaux mixture Seneca nozzles. 8.1 gallons 
(1-1-50). Pressure120 to 140 per tree. 
pounds. 4.7 gallons per tree. 
Second application,May | Not drenched. Vermorel noz- | Bordeaux mixture only (2-2- Do. 
28-29. zles. Mist spray. Arsenate 50). Not drenched. 
of lead, 2 pounds to 50 
gallons Bordeaux mixture 
2-2-50). 
Third application, July |..... Os Ss irate oe wacarter | Scares Os isisidincatesoetece anes Do. 
8-9. 
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