312 



DRY-FARMING 



spring the land is thoroughlj^ disked and reduced to a 

 fine condition. Following this the smoothing harrow 

 is occasionally used to form a more perfect mulch. 

 When seeding is to be done immediately after plow- 

 ing, the plow is followed by the disk harrow, and that 

 in turn is follcnved by the smoothing harrow. The 

 ground is then ready for seeding. The disk harrow 



Fig. 81. Disk harrow. 



is also used extensively throughout the summer in 

 maintaining a proper mulch. It does its work more 

 effectivel_y than the ortlinai-y smoothing harrow and 

 is, therefore, rapidly displacing all other forms of 

 harrows for the jKU'pose of maintaining a layer of 

 loose soil over the dry-farm. There are several kinds 

 of disk harrows used b^' dr-s'-farmers. The full disk 



