An act of making dirty.

Obsolete form of soil.

plural of soiling

A pipe that carries off liquid wastes from a toilet

Protection of the soil against sediment loss by erosion or fertility loss due to degradation. / A combination of all soil management and land use methods that protect against degradation.

The branch of soil science that deals with the chemical properties, constituents and reactions within soils.

The subdiscipline of soil science that studies chemical reactions, activities and products of soil microorganisms.

The mode of soil formation.

The sum total of all operations, practices and treatments used to protect soil and enhance its performance.

The subdiscipline of soil science that studies the functions and activities of soil-based microorganisms.