REPORT OF THE STATE ENTOMOLOGIST 19IO 



33 



1754 side or end and side wormy apples, or 23 per cent of its entire 

 product, or this one application, taking the check trees again as a 

 standard, reduced the percentage of side or end and side wormy by 

 only about- 12 per cent. These figures give an excellent idea of the 

 relative inefficiency of one application made at this season of the 

 year. 



A comparison of the totals in series 3 reveals an entirely different 

 condition of affairs. The percentage of sound fruit was only 70.14 

 on the Wealthy and but 49.33 on the Mackintosh, the former variety 

 yielding 146 side or end and side wormy, or 27 per cent of the 

 entire product, while the latter produced 200 such apples or 45 per 

 cent of the total yield. The checks in the Wealthy and Mackintosh 

 respectively had 43.19 and 33.34 per cent of sound fruit, the former 

 variety producing 32 side or end and side wormy, or 36.36 per cent, 

 while the latter variety yielded 176 such apples, or 45 per cent. 

 Again, taking the checks as a standard, it will be seen that, in the 

 case of the Wealthy, one spraying reduced the wormy apples by 

 26.95 P^^ cent, while on the Mackintosh the same treatment gave a 

 reduction of only 15.99 P^^ cent. The spraying of the Wealthy 

 trees reduced the percentage of side and end and side wormy by 

 about 9 per cent, while there was apparently no benefit in this 

 respect on the Mackintosh. Percentage comparisons are certainly 

 not very favorable when applied to small trees producing only 16 

 to a maximum of 375 apples, though they yield from only 5 to 69 

 wormy apples, a number smaller than that found on any trees in 

 the other series where the percentages of sound fruit are much 

 greater. 



Tabulation of side wormy apples 



SERIES 



PLOT 



NUMBER 



% 



I 



I 



159 



84 



I 298 

 I 084 

 I 754 

 146 

 200 

 322 

 707 



8.64 





2 



3.3 



2 



I 



15.9 





2 



14.8 





3 



23. 



■I 



Wealthy 



27. 





Mackintosh 



I Check 



45. 

 45.28 





2 " 



35-35 





3 *' 







Wealthy check. . . . 

 Mackintosh check.. 



32 



176 



36.36 

 45. 



Comparison of data with work of previous year. A comparison 

 of the summarized figures given above with those obtained in 1909 

 shows that the codling moth was very much more abundant and 



