GRASSES OF IOWA. 



437 



farmers during the seventies and fine crops of hay and seed 

 were obtained, but its tendency to 'volunteer' brought it into 

 more or less disfavor, and it is now less commonly grown than 

 common millet or German millet. It seldom becomes trouble- 

 some, however, except on light, sandy soils or land recently 

 brought into cultivation. On moist, heavy soils, or in regions 

 where there is a great deal of wet weather during the fall and 

 winter months, it is not likely to make much volunteer 

 growth." 



Fl^. 204. Two-ranked barley, Hordeum sativum distichon. (After Hackel.) 

 1, Hordeum sativum hexastichon. ( B 3) group of three spikelets; ( B ) splkelet from 

 behind; ( Bl ) from in front; (Kl) fruit from in front; ( K2) from behind. (AfterNees.) 

 3, Common four-rowed barley. Hordeum sativum vuJgare. (After Hackel.) 



Barley. — Some of the cultivated forms of barley {Hordeum 

 sativum, Jessen) are frequently cultivated in this state for for- 

 age purposes. When used for this purpose it is cut before the 

 seed is ripe. The best time to cut is when it is in the "dough" 

 stage. 



