INSECTICIDES, FUNGICIDES, AND SPRAYING 217 



dries quickly. When doing considerable work, however, 

 that must be finished within a certain time to be effective, 

 one cannot always wait for the ideal day. No spraying, 

 however, should be done on wet days or when rain is anti- 

 cipated. If it should rain shortly after trees have been 

 sprayed, they should be carefully examined afterward to 

 see if the spraying material has been washed off. If so, the 

 trees should be sprayed again. 



