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Soils خاکشناسی

ContentSoil USDA

Afghanistan soils are formed under arid and semi-arid climatic conditions. Textural classes are mostly clay loam to sandy loam. Soil pH and calcium carbonate contents are high. Soil organic matter content ranges from 0.2 to 2.5%. Water holding capacity is low, permeability and infiltration rates are high. Soil salinity is generally not a problem. Soil fertility tests have shown low levels of nitrogen, variable levels for phosphorus, and adequate levels of potassium.  Micronutrients deficiencies for iron, zinc, copper, and boron are common.

Priorities

Maps

  • Soil Regions of Afghanistan Map (1.0 MB) (NRCS)
  • Geologic and Mineral Resources of Afghanistan Link (26 MB)

Basics

Soil Fertility

Soil Assessment

  • Testing and Test Kits

Soil Erosion

  • Soil Erosion Info Sheet (NRCS)
  • Estimating Residue with the Line-Transect Method Fact Sheet (Univ of Wisconsin)
  • Gully Erosion Control: Watershed Management Manual: Gully Control Link (FAO)
  • Soil and Water Conservation Poster Booklet English and (Dari) دری (5.9 MB) (USDA)
  • Watershed Conservation Management and Rehabilitation PPT as PDF

    Soil Management

    Growing Media