Fungicides, Insecticides, and Spraying 



Calendar. 



George E. Stone, Henry T. Fernald, F. A. Waugh. 



This bulletin contains a compilation of formulas for fungicides 

 and insecticides taken from various sources, and the usual spraying 

 calendar. Many of these mixtures can be bought already prepared 

 from reliable dealers, which saves much time and trouble in mixing 

 them. The following precautions should be taken into consideration: 



1. Care should be taken to keep all substances employed in 

 spraying where they cannot be used by mistake. All substances 

 should be correctly labeled. 



2. Solutions and mixtures containing copper sulfate, corrosive 

 sublimate, and arsenate of lead should be made in wood, glass or 

 earthern vessels. 



3. Arsenical solutions should not be applied to fruits, etc, within 

 two weeks of the time they are to be used as food. 



4. Trees should not be sprayed when they are in blossom as the 

 bees which are necessary to fertilize the flowers may be destroyed. 



