Vinasse Conditioner Effect Evaluation on Soil Loss and Runoff Component

Drylands have always been an important source of soil loss and sediment yield, so that suitable conditioner application can reduce soil erosion. This study conducted to determine the suitable rate of vinasse treatment in reducing runoff and soil loss on the loess soil of drylands in Kalaleh city, east of Golestan Province and in plots with 10 x 30 x 30 cm dimensions were done. This experiment had four treatments of vinas (0, 50, 100, and 150 ml) once at an average intensity of 70 mm per hour on three different slopes (20, 12, and 8 %) and once at three rainfall intensities (50, 70, and 90 mm/h) on a medium slope (12%) each with three repetitions for 30 minutes. Vinasse treatments were also sprayed evenly on the soil surface and given about 24 hours to balance with soil particles. Runoff was collected and volumetric measurement was done after precipitation. The remaining samples were dried. The soil losses was determined. The ANOVA results showed that differences between slope, rainfall and vinasse treatments and their effect were significant. However the treatments containing 50, and 150 ml vinasse had higher performance than the control in the component of runoff volume and soil loss. Of course, 100 ml vinasse treatment caused to reduce runoff volume and soil losses components. The effect of slope, unlike the intensity of precipitation, does not follow a specific trend, but the intensity of precipitation has a direct effect on the component of runoff volume and soil losses. In this experiment condition, the application of 100 ml vinasse could be effective in runoff volume and soil loss reduction.