176 FIELD CROP PRODUCTION 



not be stacked, however, until the bundles are well dried 

 out, or else they may mold or become musty in the 



stack. 



INSECT ENEMIES AND FUNGOUS DISEASES 



163. Insect enemies. — ■ The chinch bug and the Hessian 

 fly are the most troublesome enemies of growing barley. These 

 insects, together with methods for their control, are discussed 

 in the chapter on wheat, and need not be repeated here. 



164. Fungous diseases. — Barley is attacked by several 

 diseases, the most important of which are the rusts and the 

 smuts. There are two kinds of rust, the leaf rust and the stem 

 rust, which sometimes do the crop considerable injury. They 

 may best be controlled by early seeding and the growing of 

 early maturing varieties, which may usually be harvested before 

 the rusts cause serious injury. 



Barley is attacked by two kinds of smut, the loose smut and 

 the covered smut. The loose smut may be controlled by treat- 

 ing the seed by the hot water method discussed in the chapter 

 on wheat, while the covered smut may be controlled by the 

 formalin treatment similar to that employed in treating wheat 

 for stinking smut (page 132). 



