Haploxerert BG
A representative soil profile of a Typic Haploxererts in Bulgaria. (Photo from the 4th International Meeting on Red Mediterranean Soils, Plovdiv, Bulgaria. 1997)
The central concept of Vertisols is that of clayey soils that have deep, wide cracks for some time during the year and have slickensides within 100 cm of the mineral soil surface. They shrink when dry and swell when moistened. Vertisols make up a relatively homogeneous order because of the amounts and kinds of clay common to them; however, their microvariability within a pedon is great. Before the advent of modern classification systems, these soils were already well known for their characteristic color, the cracks they produce during the dry season, and the difficulty of their engineering properties.
Xererts are the Vertisols of Mediterranean climates, which are typified by cool, wet winters and warm, dry summers. These soils have cracks that regularly close and open each year. Because the soils dry every summer and remoisten in the winter, damage to structures and roads is very significant. If not irrigated, these soils are used for small grain or grazing. In the United States, most of the soils supported grasses before they were cultivated.
Haploxererts are the Xererts that do not have a calcic or petrocalcic horizon or a duripan. These are the most common of the Xererts. They formed in a variety of parent materials, including volcanic and sedimentary rocks, lacustrine deposits, and alluvium. In many areas these soils are used for grazing by livestock. In some areas they are used for citrus, small grain, truck crops, or rice.
Typic Haploxererts are centered on deep or very deep, clayey soils with dark colored surface layers. These soils do not have significant amounts of sodium or salts, a soil moisture regime that borders on aridic or udic, or aquic conditions within 100 cm of the soil surface for extended periods. They occur in Oregon, Idaho, and California and are used for rangeland, pasture, or dryland or irrigated crops.
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class...
Haploxerert BG
A representative soil profile of a Typic Haploxererts in Bulgaria. (Photo from the 4th International Meeting on Red Mediterranean Soils, Plovdiv, Bulgaria. 1997)
The central concept of Vertisols is that of clayey soils that have deep, wide cracks for some time during the year and have slickensides within 100 cm of the mineral soil surface. They shrink when dry and swell when moistened. Vertisols make up a relatively homogeneous order because of the amounts and kinds of clay common to them; however, their microvariability within a pedon is great. Before the advent of modern classification systems, these soils were already well known for their characteristic color, the cracks they produce during the dry season, and the difficulty of their engineering properties.
Xererts are the Vertisols of Mediterranean climates, which are typified by cool, wet winters and warm, dry summers. These soils have cracks that regularly close and open each year. Because the soils dry every summer and remoisten in the winter, damage to structures and roads is very significant. If not irrigated, these soils are used for small grain or grazing. In the United States, most of the soils supported grasses before they were cultivated.
Haploxererts are the Xererts that do not have a calcic or petrocalcic horizon or a duripan. These are the most common of the Xererts. They formed in a variety of parent materials, including volcanic and sedimentary rocks, lacustrine deposits, and alluvium. In many areas these soils are used for grazing by livestock. In some areas they are used for citrus, small grain, truck crops, or rice.
Typic Haploxererts are centered on deep or very deep, clayey soils with dark colored surface layers. These soils do not have significant amounts of sodium or salts, a soil moisture regime that borders on aridic or udic, or aquic conditions within 100 cm of the soil surface for extended periods. They occur in Oregon, Idaho, and California and are used for rangeland, pasture, or dryland or irrigated crops.
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class...