26 NEW YORK STATE MUSEUM 
the end wormy fruit being less than % of 1 per cent (.308 per cent). 
The average gain in sound fruit resulting from this second applica- 
tion, if compared with the average percentage of worm-free apples 
obtained during the four-year period, amounts to only .0g per 
cent and this was accompanied by only a slight reduction in the per- 
centage of end wormy apples. 
Results obtained from three sprayings. These applications 
were distributed so that one was given in each of the above desig- 
nated periods, namely, one within a week or ten days after the 
blossoms fell, the second about three weeks after the dropping of 
the bloom and the third the latter part of July. The second was 
designed to catch the young caterpillars of the first brood just as 
they were beginning feeding, while the third was directed against 
the young apple worms of the second brood. 
Results obtained from three sprayings 















CLEAN FRUIT WORMY FRUIT 
i TOTAL 
PLOT | SERIES| YEAR | peuit End Per 
Per Per End and Side | cent 
Total cent Total cent |wormy); side |wormy| end 
wormy wormy 
| 
Sins ey a T9090 9680} 9582] 98.90 08 Los 8 to SOC eee 
6. Tee eee 1909 7710 7633| 99 Ghall, 8 6 3 68! eee 
Boodeons US) Sete IQII| 20026) 20830] 99.54 96 .46 17 2 FitAlac >,0° 
Bite kpete retaliate asctess IQII| 31119 30852) 909.14 207 . 86 60 23 T84\)) eee 
| 
Grand total and per cent 69435) 68897| 99.22 538 78 or! 38 409) .185 
' 


It was unfortunate that in 1910 no plot received these three appli- 
cations and, as a consequence, the average percentage for this 
treatment 1s somewhat higher than it should be. Even with this 
omission which, in a measure, is undoubtedly favorable to the three 
applications, the average percentage is 99.22, a gain for the third 
treatment representing only 1.57 per cent. It will be noted that 
there is a slight reduction in the average percentage of end wormy 
apples, this being approximately % of 1 per cent (.185 per cent). 
COMPARATIVE SUMMARY 
The following tabulation of comparative yields from the experi- 
mental plots during the first three years (1909—11) will prove in- 
structive, since those from the plots sprayed three times, sprayed late 
and checks have been raised pro rata to make up for a deficiency 
