Question

Two-hundred-twenty-five kilograms of triple superphosphate, Ca(H₂PO₄)₂ ^{$\large \cdot$} H₂O, commonly refered to as TSP, fertilzer per acre will provide how many pounds Ca per acre? How many pounds P per acre?Typically, the P content of a fertilizer is expressed on an oxide basis as %P₂O₅. How much %P₂O₅ does triple superphosphate contain? Hint: A few websites claim that TSP has around 45% P₂O_5.  

Answer 1