ABSTRACT
Soil physics is the study of the physical properties and processes occurring within the vadose zone. The vadose zone is the portion of the soil profile located between the soil-groundwater table interface and the atmospheresoil interface. Soil physics focuses on complex interactions among various physical processes occurring due to natural and anthropogenic perturbations (Shukla, 2011). Soil physics is also known as soil hydrology or vadose zone hydrology. The term “hydrology” is derived from the Greek words “hydor” and “logos,” meaning “water” and “study,” respectively. Hence, soil hydrology can further be explained as a branch of science pertaining to the study of water including the study of occurrence, movement, and changes in quantity, quality, and state of atmospheric, surface, vadose zone, plantborne, and subsurface water on earth.
