FUNGICIDES 



27 



gallon of this solution contains 2 pounds of copper sul- 

 phate, and the necessity for further weighing is avoided. 

 This solution will remain good for any length of time if 

 the water evaporated is replaced. 



In order to dissolve the copper sulphate, suspend it in 

 a coarse bag near the top of the water in a barrel. In this 



Fig. 8. — A convenient arrangement for mixing Bordeaux mixture. After Vermont 

 Agricultural Experiment Station. 



way it will dissolve in a few hours. If it is placed in the 

 bottom of a barrel, it will dissolve but slowly, even with 

 frequent stirring. When dissolved, the solution may be 

 made uniform by stirring. 



A stock solution of lime should be made. Quicklime 

 of good quality, which is not at all slaked, should be 

 weighed out, placed in a trough, and slaked slowly, using 



