State about the Soil Aggregation and Soil Structure

In the context of soils the term 'structure' refers to the shape that the soil takes. It may exist as individual particle or as a combination of primary soil particles into secondary particles called as aggregates. The individual unit of soil structure is called a pad whether as an aggregate or otherwise. An aggregated structure modifies the influence of texture with regard to moisture and air relationships, availability of plant nutrients, action of microorganisms, and root growth.