136 THE BUSINESS OF FAEMING 



tion entitled A Medium Size Gasoline Tractor 

 shows a modern tractor doing perfect deep plow- 

 ing. 



While the invention of the gang and many bot- 

 tom tractor plows has led to extensive rather than 

 intensive farming, by which vast tracts have been 

 brought into cultivation, and sown to the same 

 crops year after year, and which led ultimately 

 to their exhaustion of fertility, yet these plows 

 can be made to do a great service to the farmer 

 who conserves and builds up the soil fertility, as 

 it will enable him to plow his soil the proper depth, 

 and at a reduced cost per acre, and at a time when 

 it is in proper condition for breaking. And many 

 of these tractor plows have sufficient motive power 

 for moving plows at the proper depth and eco- 

 nomically. 



The summing up of the whole matter of plowing 

 is that taking in view the present condition of 

 our soils and their needs, we must secure the 

 breaking plow for our farms that will 



1st. Properly turn over the soil to a depth of 

 nine or more inches. 



2d. That will as near as possible turn com- 

 pletely under green manuring crops and other or- 

 ganic matter. 



3d. That will as little as possible press to- 

 gether the soil grains at the bottom of the furrow 

 slice so as not to interfere with capillary action. 



4th. That have the lightest draft. 



5th. That can be rapidly moved in the most 

 economical manner, and yet do proper work. 



6th. That will reduce surface soil packing to 

 a minimum. Surface soil packing by plows per- 



