62 



ASSOCIATION OF ECONOMIC ENTOMOLOGISTS. 



There were no sound apples on either set at picking time. The 8 

 sound apples on the sprayed trees were windfalls. In fact there were 

 very few apples left at picking time. The only difference that could 

 be noted was that the apples from the unsprayed trees had 1 calyx 

 worm each and 3 or 4 on the sides, while the sprayed ones were also 

 all calyx wormy, but had an average of only about 1 on the side. 



The second test was on unsprayed checks in the twice-sprayed 

 Smart & Hatch orchards. These trees were nearly one-third wormy 

 in the first brood, but about two-thirds of these worms were caught 

 under bands, and the resulting moths from the remaining worms 

 would, of course, spread out over the sprayed trees, so that there 

 would be many less worms in the second brood than if the orchard 

 had been unsprayed. On two varieties many of the apples on the un- 

 sprayed checks had more than one worm, and the results in sound 

 apples are again too low to show the real killing power of this late 

 spray. They gave averages as follows: 



Table VIII. — Results of three late sprayings alone in badly infested Mocks in 

 Smart d- Hatch orchards, 190Jf. 



Unsprayed checks . 

 Late sprayed checks 



Wormy 

 apples*. 



562 

 375 



Sound 

 apples. 



252 

 519 



Many of the sound apples on the unsprayed trees were windfalls 

 and most of the rest were below and inside. The outer and upper 

 apples were badly infested. 



On the third variety there were apples enough for the worms and 

 to spare, and these results should show the full killing power of the 

 sprayings when applied alone. 



Table IX. — Results of three late sprayings alone in moderately infested blrjcks 

 in Smart & Hatch orchard, 190 J f . 



Total 



number 



of wormy 



apples. 



Number 



of apples 



with 



calyx 



wormy. 



Number 

 of apples 

 with side 

 wormy. 



Percent- 

 age of 



sound ap- 

 ples. 



Un&prayed checks . . 

 Late sprayed checks 



Worm'; killed . 

 Percentage killed. . . 



712 

 193 



487 

 120 



225 

 73 



519 | 

 73 I 



367 

 75 



L52 



68 



That the sound apples in Tables VIII and IX must be credited to 

 the fact that the early two sprayings reduced the number of worms in 

 the orchard, is evident on comparison with the first table, where there 

 were no early sprayings. There was nearly the same number of 



