Chemical Properties of Some Alkaline Sandy Soils and Their Effects on Phosphorus Dynamics with Bone Char Application as a Renewable Resource of Phosphate Fertilizer

Abstract Several chemical properties of alkaline soils play an important role in dissolving phosphate minerals, which greatly affect the phosphorous availability to plants. The current study was carried out assess bone char application on and distribution phosphorus some sandy soils. This incubation experiment performed by selecting from different locations Upper Egypt: Arab El-Awamer (Assiut Governorate), West El-Minia (El-Minia governorate), New Valley Governorate. Bone applied at a dose 4 g kg −1 soil. periods lasted for 7, 16, 35, 65, 84 days. Phosphorus soil increased significantly with applying influenced periods. addition caused relative increase available sequence as follows: ˃ Available showed negative correlation electrical conductivity, soluble calcium, sulfate. A significant NH Cl-Pi, NaHCO 3 -Pi, NaOH-Pi, HCl-Pi, residual P fractions occurred application. all followed: HCl-P -P NaOH-P Cl-P. between positive. Our results focus importance using amendment P-poor improving availability. So, is effective technique sustainable agriculture because it clean renewable resource fertilizers.