The European Directives preventing disposal of sludges at sea after 1998 and the
land fill taxes in the UK have reawakened interest in composting and the
utilization of sewage sludges on land. Because modern agriculture is based on
the intensive uses of inorganic fertilizers and on efficient industrial type
practices, which often have little consideration for the future, there will need
to be incentives or legislation to convince producers of the benefits of
supplying some of the needs of crops with organic manures. Humic Substances,
Peats and Sludges takes account of the ways in which humic substances, which are
present in all soils and waters, peats (which