Eradication of Quack Grass. 179 



pasture and as hay, and when cut as hay it 

 affords a considerable aftermath. It is so 

 hardy that the cold of winter and the heat 

 of summer cannot destroy it. Hence it 

 has been deliberately bought and sowed 

 to provide permanent pasture, but after a 

 few years its roots become so matted that 

 the plants fail to produce a vigorous 

 growth. When this is so, the pasture may 

 easily be renovated by simply plowing it, 

 and leveling it down again with the har- 

 row. Quack grass, however, is generally 

 looked upon as a great pest, owing to the 

 difficulty of getting rid of it when its 

 absence is desired, and this view is doubt- 

 less the correct one to take of it. 



Other weedy grasses which resemble 

 quack grass more or less closely and are 

 sometimes mistaken for it include vanilla 

 grass or holy grass, western wheat grass, 

 and dropseed grass. All of these grasses 

 may be eradicated by the methods recom- 

 mended below for the eradication of quack 

 grass. 



Modes of Eradication. 



When the attempt is made to destroy 

 quack grass, effective work should be made 

 of it, and this in a single season. The fol- 



