94 



MAINE STATE COLLEGE 



The superiority of the fruit on trees treated with solution A — 

 modified eau celeste — is seen at a glance ; while solutions B and C 

 do not appear widely different. With a single exception the 

 average increase of marketable fruit as a result of the treatment 

 ranges from 19 to 60 per cent. Row "B" in table IX was a short 

 row and contained one tree which was very badly attacked — only 

 27.6 per cent, of the fruit being "No. 1" — thus bringing the 

 average below that of the adjoining check row, which was better 

 than the average. 



Combining the results obtained in the duplicate trials, these 

 facts stand out even more clearly, as seen in table X. 



Table X. 



Solution. 



<< A ?J 



"B"... 

 Check. 

 "C"... 



= S 



o > 



559 

 583 

 615 

 628 



M 0) 



a I" 



<u<j 



171 



34 



32 



5 





347 

 365 

 414 

 239 



u 2 



41 

 184 

 169 



384 





30 1 

 6 1 

 56 

 0-93 



^ ?' ^ 



1< es 



Remarks. 



930 Average of 8 trees. 



71 j " " " 



73 5 I " " " 



41-2 ' •' " 14 



As will be observed, the average proportion of "No. 1" fruit on 

 unsprayed trees — considering fourteen trees in all parts of the 

 orchard — was only 41.2 per cent, of the crop; while the average 

 proportion on trees sprayed with the least effective solution was 

 71 per cent., a gain of nearly 30 per cent. With the modified 

 eau celeste this difference was much more marked, amounting to 

 nearly 52 per cent., or a saving of more than half of the total 

 crop. 



The amount of fruit absolutely free from scab is not as large as 

 might be wished ; but the standard adopted in sorting the fruit 

 was very rigid, and much of that classed as "slightly scabbed" 

 was in reality better fruit than that classed as "free." It was 

 observed, however, that fruit from the trees sprayed with eau 

 celeste were frequently russetted, as though the solution was too 

 strong. 



With these figures in view, and considering the fact that the 

 results are in direct confirmation of those obtained last year, there 

 would appear to be little doubt as to the effectiveness of the treat- 

 ment when the work is properly conducted. 



