Haplocalcid
A soil profile of a Haplocalcid). The white color below a depth of about 30 centimeters is due to accumulations of calcium carbonate. (Soil Survey Staff. 2015. Illustrated guide to Soil Taxonomy. U.S. Department of Agriculture, Natural Resources Conservation Service, National Soil Survey Center, Lincoln, Nebraska)
Haplocalcids have a calcic (calcium carbonate accumulation) subsoil horizon with its upper boundary within a depth of 100 cm. Some of these soils have a cambic (minimal soil development) horizon above the calcic horizon. Haplocalcids are extensive worldwide.
Calcids are the Aridisols with accumulations of calcium carbonate that was in the parent materials or was added as dust, or both. Precipitation is insufficient to leach or move the carbonates to great depths. The upper boundary of the calcic (calcium carbonate accumulation) or petrocalcic (cemented by calcium carbonate) horizon is typically within a depth of 50 cm. If these soils are irrigated and cultivated, they typically have micronutrient deficiencies. Calcids are extensive in the western part of the United States and in other arid regions of the world.
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...
Haplocalcid
A soil profile of a Haplocalcid). The white color below a depth of about 30 centimeters is due to accumulations of calcium carbonate. (Soil Survey Staff. 2015. Illustrated guide to Soil Taxonomy. U.S. Department of Agriculture, Natural Resources Conservation Service, National Soil Survey Center, Lincoln, Nebraska)
Haplocalcids have a calcic (calcium carbonate accumulation) subsoil horizon with its upper boundary within a depth of 100 cm. Some of these soils have a cambic (minimal soil development) horizon above the calcic horizon. Haplocalcids are extensive worldwide.
Calcids are the Aridisols with accumulations of calcium carbonate that was in the parent materials or was added as dust, or both. Precipitation is insufficient to leach or move the carbonates to great depths. The upper boundary of the calcic (calcium carbonate accumulation) or petrocalcic (cemented by calcium carbonate) horizon is typically within a depth of 50 cm. If these soils are irrigated and cultivated, they typically have micronutrient deficiencies. Calcids are extensive in the western part of the United States and in other arid regions of the world.
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...