PREPARING THE SEED BED 



17 



be a complete inversion of the furrow slice. With the excep- 

 tion of heavy sods it is better to have the furrow slice slightly 

 on edge since it will work up more easily than if completely 

 inverted. I The ends sought in plowing are to alter the texture 

 of the soil and to bring to the surface new soil ; to bury com- 

 pletely all vegetation and trash and to pulverize and aerate 

 the soil.l 



This pulverizing and aerating of the soil we consider the 

 chief objects of plowing. The plow may invert the soil in 



THREE -HORSE SULKY PLOW 



This plow has one 16-inch bottom 



the most perfect manner, but if the plow fails to do the 

 greater part of the pulverizing of the soil as well, and leaves 

 it in such condition that the disc and harrow cannot finish 

 the work in the cheapest and best manner, it is failing to 

 accomplish its principal function. 



This pulverizing of the furrow slice is done largely by the 

 twist of the moldboard. For that reason a moldboard having 

 a medium twist should be used. At present we are using four 



