Increased phosphorus availability to corn resulting from the simultaneous applications of phosphate rock, calcareous rock, and biochar to an acid sandy soil

Efficiency of biochar, nitrogen addition, and microbial agent amendments in remediation of soil properties and microbial community in Qilian Mountains mine soils

“…AP and AK also showed a significant increase in all amended treatments and also exhibited higher contents both at the N2 level, which C‐M2‐N2 and C‐M1‐N2 treatments supported the higher value. Firstly, studies have shown that the addition of biochar can increase AP contents in soils because biochar itself contains large amounts of P with higher effectiveness (Agegnehu et al., 2016; Rafael et al, 2020). Secondly, AP and AK exhibited higher contents in N2 levels, indicating that the appropriate N sources for microorganisms can activate the activities of microorganisms, which in turn promotes the activation and decomposition of insoluble substances in the soil.…”

Strong Adsorption of Phosphorus by ZnAl-LDO-Activated Banana Biochar: An Analysis of Adsorption Efficiency, Thermodynamics, and Internal Mechanisms

“…Biochar refers to a class of aromatic solid products with a high carbon content prepared by the high-temperature pyrolysis of waste biomass, such as crop waste, , municipal waste, and animal manure under hypoxic or limited oxygen conditions; thus, there is a wide range of potential raw materials. Biochar has the characteristics of a large specific surface area; well-developed pores; abundant C, H, O, N, and other elements; and abundant functional groups.…”

The Synergistic Effect of Biochar-Combined Activated Phosphate Rock Treatments in Typical Vegetables in Tropical Sandy Soil: Results from Nutrition Supply and the Immobilization of Toxic Metals

“…Specifically, acidity-related toxicity and the low nutrient availability of acidic soils are major limiting factors for vegetable growth. The high iron and aluminum oxide levels in tropical sandy soils result in them having a high phosphorus (P) adsorption capacity, and thus, the amounts of P that are extracted from harvested products is much less than the amounts that are added via fertilizers [ 3 , 4 ]. As an exception to their low nutrient retention capacity, sandy soils are more vulnerable to potential pollution by toxic elements [ 5 , 6 ].…”

“…As a widely used soil amendment, biochar has been extensively applied to improve the physicochemical properties of soil, such as the porosity, cation exchange capacity, and pH, and subsequently, the soil’s holding capacity for water and nutrients and crop production [ 20 , 21 , 22 , 23 ]. For acidic sandy soils, biochar improved the soil organic carbon pool, water-holding capacity, the nutrient supply capacity and adsorption through increasing the cation exchange capacity [ 3 ]. The combination of biochar and phosphate material has been recognized as a desirable soil amendment for modifying soil properties and crop growth, especially in acidic, P-fixing, and P-deficient soils.…”

“…Given that they were able to improve biochar carbon retention, slow nutrient release and stabilize heavy metals in soil, it has been proven that the agronomic effectiveness of biochar-based phosphate fertilizers is better than that of soluble phosphate fertilizers [ 25 , 26 ]. Recently, the effectiveness of simultaneous applications of biochar and phosphate rock/P fertilizer were investigated, and these investigations showed that biochar provided additional soluble P and supplied adsorption sites for phosphate, preventing the evolution of an unavailable form of P [ 3 ]. The addition of biochar and P fertilizer exhibited positive effects on the growth and nutrient uptake of L. multiflorum in acidic Cd-contaminated soils [ 27 ].…”