SOIL. 



97 



Important truth. Thorough tillage is helpful for 

 most soils. Old, dead, wornout lands are especially bene- 

 fited by deep, effective stirring. Water enters more 

 easily ; air more freely ; plant food is made available ; the 

 soil becomes open and more porous ; the roots have larger 

 and better pasture grounds. All these influences con- 

 tribute to soil activity and soil productivity. 



V^ 



TiiL Plow Cu.ml6 I'lusi i.n All TiLLAOu Ui'LKAiiuMa. 



To do good work the plow must turn the furrow slice, cover the grass and 

 vegetable matter and leave the surface pulverized and mellow. 



Protected farm manures influence the producing 

 power of soils. An untold quantity of fertility is lost 

 each year because of poor methods in caring for and 

 preserving farm-yard manures. Tliis fact is illustrated 



