Soil and Environmental Sciences
Food production is a function of crop yield and soil is the only natural resource on which the food production depends. Hence, soils are crucial to life on earth. Soil is one of our most important and basic natural resource essential for crop production. Soils are integral components of entire agro ecosystems. Soil is a complex and variable medium and its study and management is not simple. Consequently, discipline of soil science is very comprehensive. To make things understandable and manageable, soil science is divided into number of branches including genesis, taxonomy, classification, survey and mapping, physics, chemistry, mineralogy, biology, fertility, salinity, erosion and conservation. Soil science is a scientific discipline concerning the study of soil as a natural resource from view point of plant growth. There is nothing in the whole nature which is more important than or deserves as much attention as the soil. Truly, it is the soil which makes the world a friendly environment for mankind. It is the soil which nourishes and provides for the whole of nature; the whole of the creation depends on the soil which is ultimate foundation of our existence. Soils are closely related to environmental quality. To gain a better understanding of how soils might be used and protected in waste management efforts, soil scientists devote a considerable share of their research efforts to environmental-quality problems.