Plant Diseases of 1901. 
21 
the prevention of smut. The results of numerous experiments and 
the experience of many farmers prove that there is no doubt of the 
efficacy of the treatment. However, occasional failures are re¬ 
ported, some growers claiming that they can see no advantage in 
the treated over the untreated seed. Such results indicate that the 
best methods of treatment are not understood by all. 
We intend to test the different ways of combating wheat smut 
in the near future, to determine which one is best suited to our 
conditions. In the mean time, the latest formulas recommended by 
the best authorities are given below: 
I. 
Copper sulphate (blue vitriol).1 pound 
Water.4 gallons 
Dissolve the copper sulphate in hot water.. Sprinkle or spray 
the solution on the wheat that has been placed in piles on the floor 
or on a canvas. Shovel the piles over while the liquid is being applied 
to insure the thorough wetting of every grain. Use no more of the 
solution than is necessary and spread out the piles so that the wheat 
will not remain wet long enough to become heated. 
II. 
Corrosive sublimate.1 pound 
Water.50 gallons 
To be applied in the same manner as the solution of copper 
sulphate. 
III. 
Formalin.1 pound 
Water.50 gallons 
Use the same as the other remedies. 
Prof. Bolley, of North Dakota, who has experimented exten¬ 
sively with remedies for grain smuts, prefers the formalin treatment 
to any that he has tried. 
