48 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
TasLe XLVII.—Sound and wormy fruit from 10 trees of Plat VIII, sprayed May 2, being 
second application as given Plat I, pear orchard of the Mrs. Fanny W. Bancroft Or- 
chard Co., 1910. 
| Number of windfallen | Number of pears from | 
pears. trade! Total number. Per cent— 
Tree No. = 
| Total. |Wormy. |Sound.| Total. |Wormy. lenin Total. | Wormy. |Sound.|Wormy. |Sound. 
| 
Son seater 6 i 5 G1 19 42 | 67 20 47 29. 84 70. 16 
OTe S eae a 53 3L 22 149 70 79 | 202 101 101 50.60 | 50.00 
6 parE See e 33 10 23 203 42 161 236 52 184 22. 03 77.97 
SOE eee 44 29 15 324 116 208 | 368 145 223 39.40 | 60.60 
SS Soe eae 54 21 33 100 29 TAU Gy! 50 104 32.47 | 67.53 
AS iad Bea ee ee ED) 82 58 624 119 505 | 764 201 563 26. 31 73. 69 
Warne jaenee ae | 33 20 13 168 53 115 201 73 128 36.32 | 63.68 
SES Se eee ae 36 19 ily 158 39 119 194 58 136 29.99 | 70.10 
Oe eee ee 70 28 42 302 64 238 372 92 280 | 24.73 75. 27 
OS oa en | 45 19; 26] 208 46| 162| 253 65] 188| 25.69] 74.31 
Total, trees | | | 
I10Ee = 514 260 254 | 2,297 597 | 1,700 | 2,811 857 | 1,954 30.49 | 69.51 
| | 
The fruit from the unsprayed block Plat VI (Table XLV) was 
93.90 per cent wormy, while that from the demonstration block, 
Plat I (Table XL), sprayed three times, was only 4.03 per cent 
wormy, showing a gain of 89.87 per cent sound fruit for the three 
sprayings. Plat II (Table XLI), sprayed twice, both times for the 
first-brood worms, showed 10.69 per cent wormy, representing a gain 
in sound fruit of 83.21 per cent for two sprayings put on in time to 
catch the first-brood worms. Plat III (Table XLII), which was also 
sprayed twice, these being the first and last applications as given 
Plat I, the accessory treatment for the first brood being omitted, 
showed 20.43 per cent wormy fruit, showing a gain of 73.47 per cent 
sound fruit for the two sprayings. This gain, however, is 10.74 per cent 
less than was the case where both sprayings were put on in time for 
the first-brood worms. Plat IV (Table XLIII) received the second 
and third applications as given Plat I, the first spraying being omitted. 
The results showed 22.51 per cent of the fruit to be wormy, which is 
a gain of 70.39 per cent over the check plat, but is 11.82 per cent 
less than the gain on Plat II, where the two applications were put on 
early. The other plats, which received only one application, ran too 
high in wormy fruit to be considered at all from a commercial viewpoint. 
Thus, Plat VII (Table XLVI), which received only the first applica- 
tion, showed 32.57 per cent wormy and 67.43 per cent sound, while 
Plat VIII (Table XLVI), which received only the second application, 
had 30.49 per cent wormy and 69.51 per cent sound. Plat V (Table 
XLIV), which received only the last application, was little better 
than the check, having 87.90 per cent of the fruit wormy and only 
12.10 per cent sound. 
