CAMPBELL-S SOIL CULTURE MANUAL 43 



Always double disk by lapping one-half. This leaves 

 the surface level if you drive so the outside disk will just 

 fill the furrow left by the center of the disk just preceding. 

 Keep tbe disk sharp. It pays. Buy as broad a disk as you 

 have horses to draw. Time is money. Always precede 

 your plowing by thoroughly disking. It helps materially 

 in obtaining a fine, firm root bed. New and improved 

 disk harrows are the next thing in order,, 



