Drastic Variations in Chemical Composition of Organic Inputs: Implications for Organic Fertilization.

ABSTRACT: Soil amendment with organic inputs is gaining importance with the ongoing shift toward circular economies. While these inputs can fertilize soils with micronutrients such as zinc (Zn), it is crucial to prevent potential contamination stemming from Zn accumulation in soils or crop uptake of toxic elements such as cadmium (Cd). While both organic matter (OM) composition and Zn and Cd speciation are key factors controlling Zn and Cd fate in soil-plant systems, these factors remain largely uncharacterized in many commonly used organic inputs. We unveil substantial differences in water-soluble Zn and Cd speciation and the OM molecular composition in various organic inputs. We found that plant-based organic inputs (e.g., green manures, lignified crop residues) were characterized by lower Zn and

SUBMITTER: Bachelder J 

PROVIDER: S-EPMC12355952 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature