Review Article

Role of Earthworms in Soil Fertility Maintenance through the Production of Biogenic Structures

Table 1

Some properties of casts of Pheretima alaxandri and their underlying soils with and without litter cover [10].

Soil without litterSoil with litter
Surface soilWorm castSurface soilWorm cast

pH5.657.706.256.30
Organic Carbon (%)1.521.702.663.36
Available P2O5 (mg 100 g-1)0.150.240.190.22
Available K2O (mg 100 g-1)3.314.785.987.36