Soils of the Country

Upland Soils of the Philippines

Soil Monolith of the Upland Soils of the Philippines exhibited at the BSWM Soil Museum

  • Adtuyon Series
    Adtuyon Series
    Location: Barangay Dalwangan, Malaybalay, BUkidnon
    Classification: Ultisols (Typic Kanhapludults)
    Parent Materials: Andesitic and basaltic rocks
    General Description: These soils found on plateau with undulating to rolling landscapes, are reddish brown to yellowish red clay loam and well-drained.
    Major Land Use: Corn is the major land use. The soils are also grown to pineapple and sugarcane.
    Soil Management Options: These are acid upland soils. Liming is highly recommended.
  • Awayan Series
    Location: Bulusukan, San Ildefonso, Bulacan
    Classification: Vertisols (Udorthentic Pellustersts)
    Parent Materials: Collo-alluvium
    General Description: The soils are dark brown, clayey, well-drained, and of moderate fertility. During the dry season, the soils crack.
    Major Land Use: The sampled area was abandoned rice field, now covered by cogon and grass.
    Soil Management Options: The soils are dominated by shrinking-swelling clays. Rice can be grown successfully in the area. The soils show slight erosion features. Aside from fertility management, there is a need to apply soil conservation measures.
    Awayan Series
  • Kabatohan Series
    Kabatohan Series
    Location: Hayangganon, Claver, Surigao del Norte
    Classification: Oxisols (Rhodic Hapludox)
    Parent Materials: Volcanic rocks (serpentine)
    General Description: These are dark red soils (high in iron) and primarily acidic uplands. Their natural vegetation is limited to acid-soil loving plants. The soils are clayey, granular structure, well-drained and shows moderate erosion features.
    Major Land Use: Maubuyoc, lugas and other trees are dominant.
    Soil Management Options: The soils have special and unique use and management requirements due to very low reserve and extremely low native fertility. Nutrient recycling is important. Only almost 10% of the area should be cultivated.
  • Mayon Series
    Location: Barangay Carolina, Naga City, Camarines Sur
    Classification: Andisols (Hydric Hapludands)
    Parent Materials: Basaltic and andesitic rocks, lava, ashes, tuff and breccia
    General Description: These are residual soils that developed from the weathering of materials ejected by Mayon Volcano. The areas have successful agriculture because of high natural fertility of soils.
    Major Land Use: Coconut, corn, peanut
    Soil Management Options: Phosphate fertilization problems are associated with volcanic ask soils due to strong phosphate fixation. Age-old fertilization techniques can still do some tricks.
    Mayon Series
  • Paradise Series
    Paradise Series
    Location: Bulusukan, San Ildefonso, Bulacan
    Classification: Inceptisols (Typic Ustropepts)
    Parent Materials: Conglomerate derived from sedimentary materials
    General Description: This soils are primarily in rolling sedimentary hills. The drainage is good, low to medium natural fertility.
    Major Land Use: These soils are primarily under pasture grass. Some cultivated areas are grown to diversified crops.
    Soil Management Options: These are many stones in the subsurface and cultivation is rather difficult. Aside from pasture, permanent crops would be best for this soil.
  • Sampaloc Series
    Location: Cuyambay, Sampaloc, Tanay
    Classification: Ultisols (Typic Kandiudults)
    Parent Materials: Volcanic materials mainly pyroclastics, weathered tuff, basalts and andesites
    General Description: These occur in moderately dissected upper basaltic plateau. The soils are clayey, deep, and well-drained. Sampaloc series are problem series - acidic, highly leached, phosphorus deficient, normally low in organic matter.
    Major Land Use: The soils are vegetated by cogon, shrubs, grasses and patches of fruit trees like citrus.
    Soil Management Options: The soils are highly erodible and need proper soil conservation measures. Liming and organic matter will improve productivity.
    Sampaloc Series