UltisolsUltisols are comparable with Alfisols except for having low base saturation due to advanced stages of weathering. These are base-poor mineral soils of humid region developed under high rainfall areas. They have low (35%) base saturation and a clay enriched sub surface horizon. The soils under this order occurs on all kinds of parent material and at varied geomorphic positions. Many of them are formed on pediments and are mostly gravelly. Because of the low fertility and low base status, these soils pose limitations for agricultural use.