PLOW BOTTOMS 127 



One does not often see three different styles of plow bottoms on the 

 same plow. These bottoms are all cutting the same width and the same 

 depth but notice the difference in the delivery of the soil. The front plow 

 bottom is doing the quality of work this soil requires. The other two 

 are not the middle bottom doing better work than the rear one. The 

 front bottom is the same as that shown in illustration G; the second, 

 illustration F; the third, illustration K. Observe in the work f the 

 front bottom that the soil is completely turned over and well pulverized 

 and that the middle bottom turns the furrow over more completely than 

 the rear one. 



so much length. In bottoms that are made for deep 

 plowing more attention is given to the height of the 

 landside than to the length because of the greater 

 amount of work being done by the mouldboard. 



The amount of moisture in the ground, its looseness 

 and compactness, and amount of stubble, trash, roots 

 and sod are determining factors in the draft of plow 

 bottoms. Too much moisture in the ground adds draft 

 in the same manner as not enough moisture. Daily 

 changes in moisture cause great changes in draft. 



