Soil Characteristics and Soil Quality Database of Agricultural Land Use Types in Doan Hung District, Phu Tho Province

Abstract

      Doan Hung district, Phu Tho province had 5 land use types for agricultural production with 21 land use patterns, distributed in soils of different fertility and texture. The pH value varied from low (3.39) to slightly low (5.42), organic matter from medium (2.37%) to poor (1.03%), total phosphorous from poor to very poor (from 0.06% to 0.14%). The results showed that there were 3 major soil groups: Fluvisols with 1,704.95ha, accounting for 13.56%; Alluvium with 2,912.28ha, accounting for 23,16%, mainly cultivated rice and rice-cash crops; and Ferrasols occupied the largest area (7,955.22ha, or 63.28%). Soil quality database was standardized following the National Land database, including soil map, current utilization map and soil characteristic data. Soil quality database can be integrated with cadastral database and other database to form Land information system of the district. Study results can help the district in comprehensive management of both soil quality and quantity.