Volume 02, dedicated to the "Management of Soil Structure." In this volume, we will discuss on a comprehensive exploration of soil structure, laying the foundation for understanding its importance, classification, and the physics behind it. We begin by unravelling the basic definitions of soil structure and related terms, providing readers with a solid conceptual framework for further exploration. From aggregates and peds to soil horizons and profiles, we delve into the terminology that forms the backbone of soil science, ensuring clarity and coherence throughout our discussions. The importance of soil structure cannot be overstated. It serves as the physical foundation upon which healthy soil ecosystems thrive, influencing water retention, nutrient distribution, root penetration, and overall soil health. By understanding the role of soil structure in regulating these essential processes, we gain insights into the mechanisms driving soil fertility, biological activity, and ecosystem resilience. Classification of soil structure provides a systematic framework for characterizing and categorizing soil types based on their physical properties. From granular to blocky, platy to prismatic, soil structure classifications offer valuable insights into soil behaviour, management practices, and potential constraints. By familiarizing ourselves with these classifications, we can better assess soil quality, diagnose issues, and devise tailored management strategies to optimize soil health and productivity.

Behind the intricate patterns of soil structure lies a fascinating realm of physics, where forces of cohesion, adhesion, and capillarity interact to shape soil particles into aggregates of varying sizes and shapes. By exploring the physics behind soil structure, we gain a deeper appreciation for the complexities of soil behaviour and the dynamic interplay between soil particles, water, and air. Indeed, the insights and knowledge shared within this volume serve as the foundation for countless research endeavours in soil health and management. Soil physical health presents unique challenges, as it is relatively difficult to manage and is influenced by a myriad of factors, including soil texture, compaction, moisture content, and environmental conditions. In many parts of the world, soil physical constraints pose significant barriers to agricultural productivity, ecosystem sustainability, and land use management. By addressing these constraints and enhancing soil physical health, we can unlock the potential of soils to support thriving ecosystems, sustainable agriculture, and resilient communities.