GENERAL KNOWLEDGE

Detailed explanation-1: -Ultisols are the most common soil in the Southeast and often support forest vegetation.

Detailed explanation-2: -The “red clay” soils of the southeastern United States are examples of Ultisols. They are divided into five suborders: Aquults, Humults, Udults, Ustults and Xerults. Because of the favorable climate regimes in which they are typically found, Ultisols often support productive forests.

Detailed explanation-3: -Ultisols are found in geologically old landscape settings. They are characterized by a humus-rich surface horizon (the uppermost layer), by a layer of clay that has migrated below the surface horizon, and by a nutrient content low in available calcium, magnesium, potassium, and sodium.

Detailed explanation-4: -Formation: Ultisols form through the processes of clay mineral weathering. Clays, with the possibility of oxides, accumulate in the B subsurface horizon. Ultisols are not as highly weathered as Oxisols. Generally, base-cations, such as calcium, magnesium, nitrate, and potassium have been leached.