Ca-plant available

The amount of calcium which is plant available. Note that calcium status is not the same as pH-status. Even when pH is high, the amount of Ca-plant available can be very low. Calcium in this fraction is affected by the supply from the CEC (Ca-soil stock) and by dissolution processes of CaCO₃. When Ca-CEC and or CaCO₃ are high, the supplying capacity of calcium will likely be high.