REPORT OF THE STATE ENTOMOLOGIST [916 



39 



The check trees in this orchard produced 1868 and 1 [98 apples. 

 respectively, with 15 and 59 of these being classed as perfect, the 

 remainder showing some form of defect, usually scab. The wormy 

 fruit comprised 22.43 an d 18.86 per cent of the crop, a rather low 

 proportion showing the " shallow " type of injury. 



Newfane orchard, summary of plots, 19 16 



TOTAL 



FRUIT 



1 Total 



4 I3i 





2 Total 



1 886 



3 Total 



10 521 





1-3 Total 



16 538 



Check 



Total 



Per cent 



3 066 



PER- 

 FECT 



I 156 

 27-98 



672 



34-82 



3 244 

 30.91 



5 072 

 30.66 



2 465 

 59.67 



903 



4793 



6 134 

 58.43 



9 502 



57-45 



74 2 924 

 2.41 95-36 



LEAF 

 ROLLER 



664 

 l6.07 



199 

 10.31 



999 

 950 



I 862 

 H.25 



379 

 [2.36 



CODLING MOTH, WORMY 



Total 



597 



14-45 



347 

 18.39 



I 680 

 16.00 



2 624 

 15-86 



645 



21 .03 



End 



174 

 5.67 



Side 

 July 



67 

 1.62 



48 

 2-54 



244 

 2.32 



359 

 2.17 



147 

 4-79 



Shal- 

 low 



514 



12.47 



266 



14. 10 



I 339 

 12.75 



319 

 IO.40 



Side 

 Aug- 

 ust 



[06 



.64 



908 

 [.98 



363 



19.24 



1 923 

 18.28 



3 194 

 I93I 



23 



• 75 



A comparison of the data secured from the various plots result s 

 in a rather poor showing for plot 3 when allowance is made for the 

 much larger yield of the trees classified. There is, for example, in 

 the perfect fruit, a gain of from 27 to 34 per cent between plots 

 1 and 2, while for plot 3 it is a little less than 31 per cent. This 

 drop is probably to be explained in part by the fact that the trees 

 in plot 3 were larger, thicker, and therefore more difficult to spray 

 thoroughly, especially from the top of a spraying outfit. The 

 observations in regard to the perfect fruit apply, though in reverse 

 order, in relation to scab, since this was the infection which dis- 

 qualified much fruit. There is a similar lack of returns in the per- 

 centage of wormy fruit from the three plots, though there is and 

 should be some difference between the sprayed and the check trees, 

 this amounting to an average of a little over 4 per cent for all of 

 the sprayed trees as compared with those untreated. 



At the time the fruit was picked our attention was called to a 

 russeting of the apples, which is probably due to spray injury. The 

 extent, of this is well shown in this summary, it varying for different 

 plots from 18.32 to 21.98 per cent, while on the unsprayed trees 

 there was only three-fourths of 1 per cent. This russeting affected 



