OATS 163 



the field by the black powdery spores that attack the panicle and 

 prevent the grains and glumes from developing. The covered 

 smut is similar in appearance to the leaf smut, but it does not. 

 attack the glumes, affecting only the kernels, which are replaced 

 in the glumes by masses of black spores. Methods for con- 

 trolling these smuts are the same as those employed an control- 

 ling the stinking smut of wheat and have been described in con- 

 nection with this disease of wheat (page 132). 



