74 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
The applications were made with a gasoline-power sprayer mounted 
on low trucks, with a 4-foot derrick, using 10-foot bamboo rods and 
double nozzles. In the operation of spraying a pressure of about 100 
pounds was maintained and between 4 and 5 gallons of liquid were 
used per tree at each application. ; 
The sprayed trees were separated from the untreated check trees 
by two rows of trees which were also sprayed to act as a barrier and to 
prevent the overflow of codling moth which might breed on the 
unsprayed plat during the summer. 
Table III gives the results obtained from three trees in both the 
sprayed and unsprayed plats, by actual count and examination of 
windfalls and picked fruit. 
TasLe III.—Comparison of sound and wormy fruit from 3 sprayed and 3 unsprayed 
trees, Baldwin variety, Sprague Orchard, North East, Pa., 1907. 
| 
: W indfalls. Fruit from tree. > = 3 Ps 
— |= | Abbe | es Uae 
Dates of spraying Total bs 1a eS Allies > iss 5 — 5 on 
and tree number. crop. FR isg| 3 = eq 3 Le ae = oS 
CU NAS I 6 So Waien|| se Sal etal eck = 
= EB) 8 = See ate Mees te BH | fa 
Sprayed June 10, July 
2, and August 9: Bushets.\ No. |, Nowe Noe No. No. No. No. No. No. 
Tree No. 1...----- 9.25 29:) 935") 157 19 | 2,151 | 2,170 41 | 2,386 | 2,427 | 98.31 
TreeiNO: Wei so. =~ 5. 50 74 | 264 338 17 | 1,279 ; 1,296 91 | 1,543 | 1,634 | 94. 43 
Tree INO./3:2s2co-- 5. 50 76 | 281 357 26 | 1,099 | 1,125 102 | 1,380 | 1,482 | 93.12 
Trees Nos. 1 to | | 
3 combined. .- . 20. 25 172 | 780 952 62 | 4,529 | 4,591 234 | 5,309 | 5,543 | 95. 78 
Unsprayed: B 
Check Ae .'5-2 60222 3. 00 324 34 358 547 90 637 871 124 995 | 12. 46 
Check Biogas ss. - 3.75 | 599} 262) 821 303 237 540 862 499 | 1,361 | 36. 66 
CheckiG=532555---- 5. 25 599 | 255| 854 626 222 848 | 1,225 477 | 1,702 | 28.03 
Checks A to C | | on 
combined... -. 12.00 | 1,482 | 551 | 2,033 | 1,476 549 | 2,025 | 2,958 | 1,100 | 4,058 | 27.11 
Table IV gives the yield of windfalls and picked fruit in bushels 
and its market value for 14 trees in the sprayed plat and for the same 
number of trees in the unsprayed plat. 
Taste I1V.—Comparison of yield and character of fruit from 14 sprayed and 14 unsprayed 
trees, Baldwin variety, Sprague Orchard, North East, Pa., 1907, with value of crop. 
: 8 Value 
No. | First- | Second Value | Value | 
Date of spraying. of class | class Cas Ciders.| Total.| first | A can- welne oe 
trees.| apples.) apples. ; class class.| 2eTs- : 
Bush. | Bush. |Bush.| Bush. | Bush.| Dolls. | Dolls. | Dolls.| Dolls. | Dolls. 
June 10, July 2, and 
AUZUST Qos5 Jans = ee 14} 43.25 | 20.25 4} 20.75 | 88.25 | 43.25 | 13°50) | 12:20))|) “32 10) Sointe 
Unsprayedichecks!s52| 0) aU4s |S seces- |-------- 22 | 58.00 | 80.00 |....-.-- aes 6.60 | 8.70 | 15.30 
The picked fruit was packed in two grades, the first grade bringing 
$3 per barrel, the second grade $2 per barrel. The windfalls and 
