The guiding idea of this project is that with this no-till agriculture comes a new organization of edaphic components and that the physical and biological parameters are integrated and reflected in one outstanding feature: soil morphology. Thus, the micromorphological technique is an extremely interesting tool for the analysis of structural characteristics and for the interpretation of edaphic transformations resulting from no-till agriculture. On the other hand, several soil characteristics which are vital for the development of biological communities, such as aggregate-formation, porosity, hydric dynamics, organic matter and chemical dynamics, also depend on inorganic fraction composition.