56 THE OLIVER PLOW BOOK 



Deep plowing cannot be done successfully with a plow 

 having a capacity of not more than seven or eight inches 

 in depth, because it cannot possibly break up or pulverize 

 'a deep furrow\ This tact should be taken into serious 

 ~cbnsideration~by anyone who attempts to do deep plow- 

 ing if he expects to plant a crop soon after the plowing 

 is done. Its curvature and shape will permit the passage 

 of thick slices over the mouldboard. But when the 

 plow is penetrating a depth beyond its capacity it 

 pulverizes poorly to that depth and the rest of the slice 

 is broken into clods which are usually thrown on the 

 bottom of the furrow. For this reason one who expects 

 to turn a depth of eight inches or more should secure a 

 plow with a bottom designed for this type of plowing. 



Part of the furrow is turned on edge and is almost ready to fall back. 



Attempting to use a plow having a capacity of eight 

 inches in those soils that stick together has a tendency 

 to set the furrow slice on edge and oftentimes the furrow 

 slice rolls back with the sod on top. Thus, the furrow 

 itself effectively offsets any influence the plow bottom 

 may exercise towards pulverization. This fact also 

 accounts for a great deal of deep plowing failure because 



