Soil science is the study of soil as a natural resource on the surface of the Earth including soil formation , classification and mapping ; physical , chemical , biological , and fertility properties of soils ; and these properties in relation to the use and management of soils .
It includes soil formation , classification and mapping .
Much of Cavan 's land is clay soils , which are rich in minerals , but heavy and poorly drained , making pasture farming the dominant farming system in the county .