10.8b (9.54 ha Index 184)
Most of the gently undulating lands in the Departments correspond to this group. of Canelones and San José, located in the surroundings of population centers such as Libertad, San José, Tala, Canelones, Saint Baptist, etc. They exist to a lesser extent in the Departments. of Colonia y Maldonado. The geological material corresponds to clayey silt sediments of brown color and normally with calcium carbonate concretions. The relief is gently undulating to undulating with predominance of slopes of 1 to 4%, with a region around Tapia with slopes of 3 to 6%. It corresponds to areas with a lower degree of current erosion, defined as moderate, with associated areas of light erosion. Sheet erosion then predominates, with variable loss of the upper horizons. This group is normally located in positions with low erosion risk, such as high interfluves and gently sloping slopes. The soils correspond to Typical Ruptic and Luvic Vertisols (Grumosoles) and Typical Eutric and Subeutric Brunosols (Black and Medium Brown Grasslands), black or very dark brown in color, silty clay loam texture, high fertility and moderately well drained. This group corresponds to the Tala-Rodríguez, Libertad and San Jacinto units and integrates to a lesser extent the Ecilda Paullier-Las Brujas and Isla Mala units of the 1:1.000.000 (DSF) scale chart.
10.6a (0.46 ha Index 206)
This group is located as a discontinuous strip in the south of the Departments. of Canelones, Montevideo, San Jose y Colonia. The geological material corresponds to clayey silt sediments from the Quaternary, brown to orange-brown in color. The relief is gently undulating, with a predominance of slopes of 1 to 3%. In the Department of Canelones, approximately towards the east of Toledo, the relief is stronger since it is influenced by the proximity of the crystalline basement giving a predominance of slope of 2 to 4%. The predominant soils correspond to Subeutric Brunosols, sometimes Eutric, Typical and Luvic (medium and maximum Brown Grasslands) of brown to dark brown color, silty loam texture, high fertility and moderately well drained. The predominant use in the Departments. of Montevideo y Canelones It is horticultural-fruit and crops on a small farm scale. In San Jose y Colonia There are summer-winter crops, potatoes, etc. at the medium chakra level. This group makes up the Kiyu units (Colonia y San Jose) and Toledo (Montevideo y Canelones) of the chart at a scale of 1:1.000.000 (DSF)
