44 



WHEAT 



FIRMING THE SEED BED 



When land is allowed to lie for a considerable 

 period after plowing before the crop is planted, 

 the action of the rains and the necessary surface 

 cultivation usually pack and firm the soil to a 

 sufficient extent to make a good seed bed. The 

 use of the subsurface packer is most essential 

 on late spring plowing, when the purpose is to 

 plant at once after plowing. For sowing fall 

 wheat, the subsurface packer may be used to 

 advantage, if the plowing precedes the sowing by 

 a short interval. By setting the disks rather 

 straight and weighting the harrow, a disk harrow 

 may be used as a substitute for the subsurface 

 packer. 



MAINTAIN SOIL MULCH DESTROY WEEDS 



It is essential that sufficient and proper cultiva- 

 tion be given to destroy weeds. This is mor e 



Fig. 9. The Campbell subsurface packer. 



