In order to overcome the difficulty in sterilising soils without affecting the nature and quantity of humic components in
it, the Arnold method of sterilisation has been tried. Humic substances from the sterilised soil samples were compared with
their corresponding counterparts from the non-sterilised samples. The data reveal that this method of sterilisation does not
affect the humic components present in the soil.
Key words Humic substances - Soil sterilisation