Evaluating Soil Quality and Orientation for the Use of Alluvıal Soils alongthe Red River in Phu Tho Province

With natural advantages, the alluvıal soils along the Red river play an important role in the development of agriculture to ensure food security and livelihood of local people. Phu Tho province has a large area of alluvıal soils along the Red River (1,515.82 ha), which are mainly used for agricultural purpose with 5 land use types: vegetables, cash crop, sugarcane, fruittrees, and grass. However, the agricultural development on alluvıal soils along the Red River of Phu Tho province has not fully utilized thepotential of alluvial soil. The study was conducted to evaluate the quality of alluvıal soils along the RedRiver as a basis for effective agricultural land use in Phu Tho province. The alluvıal soils along the Red River in Phu Tho are ofsandy loam texture, light acidity with relatively high fertility: OM%: 2.04 to 4.91; N%: 0.11-0.29%, P2O5%: 0.08-0.15, available P2O5: 12.61-17.17 mg / 100g of soil.Total potassium, available potassium, and exchangeable magnesium weremoderate, but the content of exchangeable calcium was high. Soil had low water holding capacity due to its lighttextureleading towater deficit during dry season. Thesoil CEC was not high andthe ability to keep nutrition was limited. In order to improve the quality of the alluvıal soils along the Red River, it is necessary to apply more organicamendments, to limit the conversion of agricultural land to non-agricultural purposesandto increase the area of ​​vegetable cultivation, cash crops, and grassland from ineffective sugarcane areas.