Effects of organic mineral fertiliser on heavy metal migration and potential carbon sink in soils in a karst region

Bio-Organic Mineral Fertilizer for Sustainable Agriculture: Current Trends and Future Perspectives

“…In the case of both amaranth and purslane, the above-ground biomass and nutritional parameters of the plant were improved, suggesting the positive impact of BOMFs on agricultural soil as well as crops. It should be further noted that BOMFs are also affective in remediation of soil pollution, as reported by Chen et al [40]. In pot experiments simulating karst mountainous area and heavy metal contamination (cadmium) using pakchoi cabbage (Brassica rapa chinensis), the results demonstrated that the heavy metal accumulation in BOMF-treated plants was the lowest, suggesting the effectiveness of mineral-microbial combinations.…”

“…This method of fertilizing fields by supplementing potassium and phosphorus is simple but varies greatly in its effect on crops. In recent years, some scholars have also begun to try similar methods to obtain organic potassium phosphate fertilizers using different organic materials and minerals, supplemented with microbial agents [8,14,[39][40][41]. The results indicate that fermentation with a microbial agent greatly increase the soluble content of nutrients (K and P), suggesting that microbial fermentation can efficiently transform low-grade mineral rocks.…”

Image_2.TIF

“…In comparison, mineralized carbon takes longer periods but is greatly influenced by soil pH, since acidic pH dissolves the mineralized carbon (HCO 3 -). Some researchers have demonstrated that silicate-rich clay mineral soils are significantly better choices for carbon sinks as they can provide the inorganic (metal) component for carbon mineralization through soil biological activity (Chen et al, 2017;Xiao et al, 2017). Furthermore, deeper studies are required on factors that have a significant impact on the soil carbon sink but have received little attention, including soil carbon management.…”