INSECT ENEMIES AND DISEASES QI 



138. "Sticker" or adhesive. It is difficult to cause solu- 

 tions or mixtures to adhere to the leaves of some plants ; 

 for example, the onion and cabbage. To obviate this 

 trouble, a "sticker" may be made of 2 pounds of resin, 

 i pound of sal soda crystals and I gallon of water. This 

 mixture is boiled out of doors from I to i l /2 hours, or 

 until the solution is of a clear brown color, and then 

 added to every 50 gallons of bordeaux mixture and to 

 every 100 gallons of other spray materials. 



