REPORT OF THE STATE ENTOMOLOGIST I915 39 



Summary of the three spray treatment, 1915 





NO. 



PERFECT 



SCAB 



LEAF 

 ROLLER 



OR 

 GREEN 

 FRUIT 

 WORM 



CODLING MOTH, WORMY 



ORCHARD 



Total 



End 



Side 

 July 



Side 

 August 



Newfane 



Total 



6 108 



I 683 



22 039 

 29 830 



3 367 

 55.10 



589 

 34.99 



16 701 



75.77 



20 657 

 69.24 



I 440 



23-57 



195 



11.52 



3 671 



16.65 



5 306 



17.78 



679 

 II . II 



697 



41.41 



1 038 

 4.70 



2 414 

 8.09 



1 015 

 16.61 



582 

 34.52 



863 

 3.91 



2 460 

 8.24 



36 



.58 



5 

 .29 



10 



.04 



51 

 .17 



750 

 . 12.27 



564 

 33.51 



853 

 3.87 



2 167 

 7.26 



261 



Per cent 



Kendall 

 Total . . . 



4-27 

 6 



Per cent 



Webster 



Total 



-35 

 6 



Per cent 



Grand total 



Per cent 



.02 



273 

 -91 



The plots receiving three applications differed most widely in the 

 size of the crop, ranging from 1683 apples in the case of the Kendall 

 orchard to 22,039 in the Webster orchard. The perfect fruit ranged 

 from 34.99 to 75.77 per cent, a considerable proportion of this' 

 difference being due to variations in scab infection, although the 

 leaf roller and codling moth were also responsible for many imperfect 

 apples. The percentage injured by the former ranged from 4.70 

 to 41.41, and of the latter from 3.91 to 34.52, the greater relative 

 injury invariably being on the plot bearing the smallest crop. End- 

 wormy apples for the three plots amount to only .17 per cent, by 

 far the greatest damage being done by larvae hatching in July. 



Summary of check (unsprayed) tree records, 1915 





NO. 



PERFECT 



SCAB 



LEAF 



ROLLER 



OR 



GREEN 

 FRUIT 

 WORM 



CODLING MOTH, WORMY 



ORCHARD 



Total 



End 



Side 

 July 



Side 

 August 



Newfane 



Total 



Per cent 



Kendall 



Total.. 



Per cent 



Webster 



Total 



979 



651 



5 419 

 7 049 



13 

 1.32 



63 

 9-52 



I 136 

 20.96 



I 212 

 17.19 



866 



88,45 



419 

 62.82 



4 052 

 74.77 



5 337 

 75-71 



99 



10. II 



178 

 27.34 



403 

 7.43 



680 

 9.64 



681 

 69.56 



430 

 67.58 



345 

 6.36 



I 456 

 20.65 



293 

 29.92 



18 

 2.76 



17 

 ■ 31 



328 

 4.65 • 



684 

 69.86 



373 

 57.29 



317 

 5.84 



I 374 

 19.49 



331 

 33.81 



33 

 5. 06 



12 



Per cent 



Grand total 



Per cent 



. 22 



376 

 ■ 5. 33 



