Philosophies of soil classifications : from is to does / S.W. Buol -- How good is our soil classification? / R. Dudal -- Soil classification : past and present / Robert J. Ahrens, Thomas J. Rice, Jr., ...

Soils have a natural characteristic called the cation exchange capacity (CEC) that allows them to hold (and exchange) cations (e.g., Ca+2 or Na+). These cations are held tight enough on the CEC that ...

Saltwater intrusion from sea level rise and tidal flooding is increasing soil salinity risks in coastal farm fields (Figure 1). Soil salinity is related to the presence of soluble salts and cations ...

Soils affected by salts can be described in two ways: by salinity classification or by potential crop response (Figure 1). Salinity classifications are based on the total accumulation of salts in the ...

A series of land classification studies completed over 50 years ago — based on data organized before Hawai‘i became a state in 1959, including surveys from the 1930s — continue to influence the use of ...

The soil is formed when rocks are broken down by the action of wind, water and climate. This process is called weathering. The characteristic features of a soil depend upon the rocks from which it has ...