PhilRice

Soil Series

Information System

0-13
13-26
26-48
48-61
Ilagan Series
Soil Fertility Low to moderate
Soil pH Slightly acid (5.0-6.0)
Organic Matter Low
Phosphorus (P) Low
Potassium (K) Low
Nutrient Retention High
Base Saturation High
Salinity Hazard None
Physical Soil Quality
Relief Rolling to hilly
Water Retention Moderate
Drainage Poor internally
Permeability Moderate
Workability/Tilth Moderate
Stoniness Gravels and concretions
Rooting Depth Deep (>1m)
Flooding None
Erosion Moderate to severe
Surface Soil Type: Sandy loam/Sandy clay loam/Silty clay loam
Family name: Fine, mixed, isohyperthermic, Typic Haplustalf
An old soil which has undergone extensive weathering but has retained a high base status alf Alfisol and exhibits minimum complexity in its horizonation hapl This can be found in areas with pronounced wet and dry seasons ust The mean annual soil temperature is higher than 22C isohyperthermic