122 MAINE STATE COLLEGE 



than did the unsprayed trees ; that the number of wind- 

 falls was greatly lessened by spraying ; that the best time 

 to spray probably varies with different varieties, but in no 

 case should spraying be done before the blossoms fall. 

 There is no danger from the use of fruit which has been 

 sprayed as directed. 



8. Spraying with the ammoniacal solution of copper car- 

 bonate, or with the modified eo.u celesta, is effective in 

 checking the ravages of the apple scab fungus ; but copper 

 carbonate in suspension appears to have no value as a fun- 

 gicide. The cost of spraying with eau celeste or with the 

 ammoniacal solution of copper carbonate is about three 

 cents per tree, for each application. 



