Review Article

The Role of Earthworms in Tropics with Emphasis on Indian Ecosystems

Table 8

Calcium and carbonates in castings of Pontoscolex corethrurus compared with that of habitat soil [70].

Constituents šœ‡ g/g dry weight
SoilCastings

Ionic Calcium12.24 Ā± 0.41145.50 Ā± 9.81
Exchangeable Calcium12.83 Ā± 0.3795.23 Ā± 7.28
Insoluble Calcium179.62 Ā± 0.0232.09 Ā± 0.93
Ionic/Insoluble Carbonate0.15 Ā± 0.016.98 Ā± 2.22