PLOWING 135 



nine inches and over is deep plowing, and there- 

 fore, any plowing under nine inches is shallow 

 plowing. 



In the author's judgment this standard is as 

 good as any that can be fixed, for he has learned 

 by observation and much experience that the plow- 

 ing of most of our soils to a depth of nine inches 

 is the plowing of them to that depth that gives 

 the full benefits of deep plowing. Nine inch plow- 

 ing, done with the proper plow, breaks up the plow 

 sole, properly incorporates any organic matter 

 that may be upon the surface of the ground with 

 the soil, and makes a seed bed with sufficient room 

 for the proper root development of most any 

 plant grown by the farmer, and gives a large stor- 

 age room for moisture when it is available to be 

 conserved and used for future crop growth. 



Not every plow is capable of plowing the soil 

 more than nine inches in depth. It can not be 

 done successfully with the two horse walking- 

 plow, for the draft will be too much for the horses. 

 And many of the single bottom three horse riding 

 plows, and the two bottom gang plows, are not 

 so constructed that they will turn correctly the 

 nine inch furrow slice. Their construction has 

 had in view the turning of a five, six, or seven inch 

 furrow slice. Yet some of these plows will do 

 nine inch plowing successfully. Illustration on 

 page 125 shows one of them at work turning as 

 nice a nine inch furrow ever seen upon the farm. 



Many of the modern disc plows will plow nine, 

 ten and twelve inches in depth, and do a job of 

 perfect plowing and with light draft. Illustra- 



