POTASH FERTILIZERS 1 87 



229. Amount of Potash Removed in Crops. — In 



grain crops from 35 to 60 pounds of potash per acre 

 are removed from the soil. For grass crops more pot- 

 ash is required than for grains, while roots and tubers 

 require more than grass. The approximate amount of 

 potash removed in various crops is given in the fol- 

 lowing table : 37 



Potash per acre. 

 Lbs. 



Wheat, 20 bu 7 



Straw, 2,000 lbs 28 



Total 35 



Barley, 40 bu 8 



Straw, 3,000 lbs 30 



Total 38 



Oats, 50 bu 10 



Straw, 3,000 lbs 35 



Total 45 



Corn, 65 bu 15 



Stalks, 3.000 lbs 45 



Total 60 



Peas, 30 bu 22 



Straw, 3,500 lbs 38 



Total 60 



Flax, 15 bu 19 



Straw, 1 ,800 lbs 8 



Total 27 



