22 
The Colorado Experiment Station 
Figure 14. Sprayed Canes. 
Fig. ii. The two operators, each provided with a bucket, dip up 
equal amounts of the copper sulphate and lime solutions, respectively, 
and pour them together at the same rate at a height of two or three 
feet above a mixing-barrel. (See Fig. n.) This permits of 
thorough mixing in falling, and in view of the fact that the value 
of Bordeaux mixture as a fungicide depends largely upon its method 
of preparation, the procedure here described should be adhered to 
rather closely. After the lime and bluestone have been brought 
together in the mixing barrel, the whole should be stirred thorough¬ 
ly with a long paddle, at which time the soap solution may be 
added. It is now ready for use. 
Cost of Materials. 
The commercial copper sulphate can be obtained in ioo pound 
