Abstract
The soil as a material of planting ground in a slope seeding needs proper organic factors for growing plants along with a stable slope that prevents erosion caused by rainfalls. For this reason, pH, hardness, and water content of soil were measured. In addition, C/N ratio, a degree of growth, and a stability of slope were measured for vegetation. In the experiment, a hardness value of soil indicated a range, which did not affect the growth of plants. Moreover, the slope did not show a surface erosion due to a rainfall. Furthermore, vegetation grew favorably and a rate of covering became 100%, and this contributed to the stability of a slope. From these results, it was concluded that waterworks sludge should be used in practice as a material of planting ground in slope seeding.