402 GRASSES AND HOW TO GROW THEM. 



jjounds of clover seeds shoiild then be scattered over 

 the land, and of one or more guiisses, if desired. The 

 ground is then smoothed down with the harrow. On 

 some soils, it may be helpful to partly smooth the 

 ground, before sowing the seed. The grazing may go 

 on without interruption. 



Reference has been made to the renewing of Russian 

 brome (see p. 188), of Quack grass (see p. 242) and 

 of Johnson grass (see p. 257), by using the plough and 

 harrow. Bermuda grass may also be renewed (see p. 

 128). Some advocate renewal by simply using the or- 

 dinary harrow. To use it thus is of questionable ad- 

 vantage, the impression made on old sod is so slight. 



In some instances on light soils or on good soils un- 

 derlaid with gravel, the grasses fail in certain parts 

 from drought or from excessive pasturing. The rem- 

 edy is to disk the ground where the pastures have failed, 

 and to sow seed again along with rye or other grain. 

 Here also, the pasturing may go on as usual, if the seed 

 has been plentifully sown. 



