Urban soil enzyme activity restoration with Burger dirt

Soil enzyme activity is good indicator of soil quality. Urban soil has poor quality for plant growth. In the meanwhile, food waste is a huge issue in most of the area. Burger dirt with the use of food waste has potential to improve soil quality. The objective of this study was to determine the effect of soil enzyme change with Burger dirt. It was cooperated at 1:1 and 1:2 soil to Burger dirt ratio for 2, 4, 6 and 8 weeks and thus determine the soil enzyme activity, pH and moisture content. Soil pH was stabilized to 7 significantly at 6 and 8 weeks of restoration period or 1:2 ratio. The 1:2 soil to Burger dirt ratio showed significantly increased soil moisture content from 12.00±0.286 to 14.3±2.11%. Soil urease activity is enhanced from 1.330±0.0407 to 10.5±0.315 mg NH₃-H at 8 weeks of restoration period and vice versa in catalase activity (0.525±0.0104 to 0.0839±0.00535 mL 0.02 mol/L KMnO₄/g dry soil). An 8-week soil restoration period with 1:2 ratio of soil to Burger dirt was recommended to improve the soil enzyme activity and pH.