Which soil structure is best for cultivation?

Crumby is the soil structure that is best for cultivation.
Soil structure is defined by the way individual particles of sand, silt and clay are assembled. It is determined by how individual soil granules clump, bind together and aggregate, resulting in the arrangement of soil pores between them.
There are various types of soil structures apart from crumby Platy, Prismatic, Columnar, Blocky, Granular, Wedge and Lenticular.