REPORT OF THE STATE ENTOMOLOGIST Kjl6 



25 



the number of wormy apples. This is probably due not only to 

 the very small crop on plot 3, but also to the fact that the thorough 



spraying of last year may have aided materially in reducing the 

 number of codling moths which were able to winter and breed upon 

 the trees this year. It is -worthy of note in passing that the per- 

 centages of perfect and scabby fruit and also of apples injured by 

 the leaf roller and the codling moth for the three sprayed plots, 

 do not vary widely from the results secured from two special trees 

 farther north on the experimental rows. These trees were not 

 sprayed under supervision and presumably received about the same 

 treatment as those in the plots. The fruit was classified simply 

 for the purpose of comparing the yields from trees bearing a moderate 

 crop with those showing a light fruitage. 



Kendall orchard, comparison of plots, 1915 and 19 16 



TOTAL FRUIT 



SIDE JULY 1 





1915 



i Total 



Per cent 



5 598 



2 Total 



2 847 



Per cent 





3 Total 



I 683 



Per cent 





Checks 



Total 



651 



Per cent 





1916 



6 838 



3 064 



1 450 



2 107 

 37.63 



1 092 

 38.35 



589 



34-99 



63 

 952 



1916 



3 680 



5384 



I 999 



65.20 



1 007 

 6944 



377 

 38.15 



1 549 

 2767 



901 

 31.64 



582 

 34-52 



430 

 67.58 



1916 



662 

 9.68 



266 

 8.68 



207 

 14.27 



129 

 13.05 



1915 



1 419 

 25-34 



837 

 2936 



564 

 33-51 



373 

 729 



1916 



492 

 7.19 



214 

 6.97 



184 

 12.68 



108 



10.72 



1 This includes the side July and " Shallow " of the 1916 classification. 



The same trees were used in this orchard for plots 1-3 in both 19 15 

 and 19 1 6 and the above comparison is therefore of more than usual 

 interest. In the first place it should be noted that there is no very 

 wide divergence between the yields of the trees in the various plots 

 during these two years, though the crop on the check trees in 19 16 

 was somewhat larger than that for 19 15. It will be noted that there 

 is a substantial increase in both the number and the percentage of 

 perfect apples on the three plots and the check trees, and a marked 

 decrease in both number and percentage of wormy apples and those 

 classed as " side July " (these are included in the wormy and are 

 separated for the purpose of comparing the results obtained with 

 one type of injury) in all three plots, the reduction in the wormy 

 fruit of both classes amounting approximately to from one-third to 

 two-thirds of the infested apples. This is true of the check trees 



