Soil water erosion is intensified by poor soil management and inappropriate agricultural techniques. Consequences of erosion process include the loss of sediment and nutrients, of which phosphorus is especially important, due to its decline in natural soil resources. For this purpose, measurements of potential erodibility on soils with different management were undertaken. 48 samples of soil were collected and rainfall simulation was done in Polača (Zadar county) in April and in Baćina (Dubrovnik-Neretva county) in October of 2021. Ponding time and runoff time were measured on field and relevant physical and chemical properties were determined in the laboratory. The grass covered treatments (GCT) showed significant differences in the soil organic matter content (2.05% in Polača and 2.51% in Baćina) and soil water content (28.16% i 38.4%) as well as water holding capacity of the soil (34.06% i 44.4%) compared to tilled soil. Significant differences in ponding time (almost three times longer for grass covered treatment in Polača) and sediment loss (two times less in GCT) were found among the same treatments. Erosion losses of phosphorus are almost twice as low in samples under conservation management. In Polača, the highest value of phosphorus in sediment was determined for samples mulched with hay at the amount of 0.015 kg/ha and the lowest value was noted for GCT where significant concentrations could not be determined. In Baćina, the highest erosion losses of phosphorus were observed for treatments of tilled soil and straw mulch with a value of 0.014 kg/ha, while no sediment was collected from samples mulched with hay, so phosphorus losses are also considered prevented. A strong positive correlation (0.56) is determined between the concentration of phosphorus in the soil and the content of water stable aggregates in Polača, while other parameters do not correlate with the concentration of phosphorus in soil and sediment. Mulches showed a significant reduction in the volume of water runoff compared to cultivated soil. Grass covering or mulching showed to be a good erosion control practice.