Introduction - Drexel University

Step 1: Obtain the prescription: 20 lb P2O5 and 150 lb N per acre. Step 2: Chose a P fertilizer source: 10-34-0 at $ 237.50/short ton (= 2000 lb) Step 3: Determine P product needed per acre: 20/0.34 = 59 lb of 10-34-0 per acre. Step 4: Determine cost of starter fertilizer: 59 x 237.5/2000 = $ 7.01/acre ................
................