251 research outputs found
Sources of errors and uncertainties in the assessment of forest soil carbon stocks at different scales—review and recommendations
Relative Importance of Mineralogy and Organic Matter Characteristics on Macroaggregate and Colloid Dynamics in Mg-Silicate Dominated Soils
Alien red oak affects soil organic matter cycling and nutrient availability in low-fertility well-developed soils
Resource driven community dynamics of NH4+ assimilating and N2O reducing archaea in a temperate paddy soil
Influence of surface functionalization on the hydrophilic character of mesoporous silica nanoparticles
Speciation and bioavailability of soil nutrients: effect on crop production and environment
The agricultural production, determining the quality of the foodstuffs, depends on the biological characteristics of the crops and on the environmental properties, where soil environment plays a central role. Crops absorb water and nutritive elements from soil, but they can intake toxic elements as well. The potential benefits, or dangers, due to the presence of a certain element in soil, depend on its chemical speciation regulating its bioavailability, toxicity, environmental mobility, and biogeochemistry. Elements may exist in soil in different redox species and organic or inorganic forms. They may thus undergo different chemical processes occurring in solution, in the solid phase, or at the solid-water interface. The chemical speciation and bioavailability of the elements are affected by soil and environmental properties, which may undergo natural or anthropogenic modifications. As an example, we reported here some aspects linked to the chemical speciation, bioavailability and environmental fate of two chemically similar elements. The former, phosphorus, is a macronutrient element, essential for plant growth, while the latter, arsenic, is strongly toxic for most living organisms
Nitrogen availability in fertilized paddy soils as a function of redox conditions and rice straw incorporation
Sorption of paddy soil-derived dissolved organic matter on hydrous iron oxide-vermiculite mineral phases
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