Scottville, 49454 Northwest Michigan | To convert P1 parts per million to pounds of P2O5:
Take the P1 parts per million (ppm) times 2 to get pounds of phosphorus. Then to get to the pounds of phosphate (P2O5)..... multiply the pounds of phosphorus by 2.3 to get pounds of phosphate.
Example:
P1 = 50 PPM
50 x 2 = 100 pounds of phosphorus.
100 x 2.3 = 230 pounds of phosphate
A quicker way is just to multiply the PPM by 4.6 to get pounds of phosphate.
But like a previous poster said.... just because we have a certain level of phosphorus in the soil, does not mean all of that phosphorus is available. Frankly, it is unlikely all of that phosphorus is available.
gordon |
Formula for converting p1 to available phosphorus?
