Home-Mixing Table. 



To ascertain the quantity of each material neces- 

 sary to make 1,000 pounds of Fertilizer of any desired 

 analysis. 



Food for 

 Plants 



247 



Example: A common and profitable formula for 

 Oats is 4-7-5, that is 4 per cent. Nitrogen, 7 per cent, 

 phosphoric acid, 5 per cent, potash. From the table 

 we ascertain that 4 per cent, available Nitrogen is ob- 

 tained by using 267 pounds Nitrate of Soda, 7 per cent, 

 available phosphoric acid is obtained by using 438 

 pounds 16 per cent, phosphate and 5 per cent, available 

 potash is obtained by using 104 pounds sulphate of 

 potash, making a total of 809 pounds which contains the 

 same amount of plant food as 1,000 pounds of 4-7-5 

 ready -mixed fertilizer. Should it be desired to make an 

 even thousands pounds, add a sufficient amount of 

 fine dry loam. 



