58 



THE OLIVER PLOW BOOK 



We must remember whether we are plowing shallow, 

 medium, or deep that the ground must always be left in 

 condition at the bottom of the furrow for capillarity to 

 take place with the subsoil. We cannot judge this by 

 looking at the surface. It is necessary to dig into 

 the ground the depth of the plowing and observe the 

 condition. When we do this we will often see things 

 that surprise us, and the explanation for many a deep 

 plowing failure can be satisfactorily found. 



The great advantage of deep plowing is that it offers 

 deeper root beds for the crops. The mellower the 

 ground is the easier the roots grow and penetrate. 



Side view of the deep plowing with the proper bottom illustrated on 

 page fifty-seven. Observe how this soil is being turned over. The 

 crack through the center of the furrow slice shows the immense pressure 

 being exerted to pulverize the furrow slice from top to bottom. Observe 

 also in the plowed field the lack f large clods and holes. The manner 

 in which this bottom forces the top of the furrow slice against the ground 

 and then crushes it as the plow advances is obvious. 



With the deep plowing the plant has the additional 

 advantage of getting farther into the ground, thus 

 enabling it to drink in more plant food and have the 



