PLOW BOTTOMS 



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This clay field is being plowed seven inches deep to permit moisture 

 to escape. This field was tiled but on account of the imperciousness of 

 the clay excessive water remains and it is necessary to plow in such a 

 way that there is under-drainage. Contrast this type of plowing with 

 that shown in the illustration below. 



i 



When plowing sandy loam the great object is to stir the ground for 

 aeration and leave it in such a manner that moisture will not unduly 

 escape, thus the crowning of the furrows, noticeable in the illustration 

 above, is entirely absent and the ground left as level as possible. These 

 two illustrations are good evidences of the fact that plowmakers are 

 striving to build bottoms that will do the soil the greatest possible good. 



of landside surface to prevent the plow gouging into the 

 furrow wall and also to help keep the plow running level. 

 On breaking plows the shallow furrow requires an ex- 



