PO 59: Calculate crop P removal given yield and P concentration.

To determine crop removal, multiply yield (in lb) by the Dry Matter (DM) content times the P content of the DM.

• For example: 20 tons of silage yield at 35% DM and 0.62% P₂O₅.
• Crop P removal = 20 tons x 2000 lb/ton x 0.35 x 0.0062 = 87 lb P₂O₅ (or 4.35 lb P₂O₅/ton silage)

The chart below gives P removal estimates of common field crops.