272 BOARD OF AGRICULTURE. [Pub. Doc. 



of the copper solution with each rain to kill all ordinary- 

 spores. 



Copper Sulphate Solution. — This is used while the trees 

 are dormant, one pound to twenty-five gallons of water, 

 and when the foliage is upon the trees or plants at one- 

 quarter pound to fifty gallons of water. In this form the 

 copper is very soluble, quickly washed off by heavy rains, 

 and it is therefore necessary to spray after every heavy rain. 



Conditions of Success. 

 The secrets of success in this work are : (1) in the ability 

 of the operator to fully understand his machines or })umps, 

 and keep them in good working order at all times ; (2) to 

 understand the preparation of the insecticides and fungi- 

 cides, and the economy of time in getting them ready for 

 use; and (3) in the thorough and rapid application at just 

 the rio-ht time. 



