organic-amendments
Organic amendments are materials derived from natural sources—such as compost, manure, biochar, or plant residues—that are added to soil to improve its physical, chemical, and biological properties. In plant science, they are significant because they enhance nutrient availability, stimulate beneficial microbial communities, and improve soil structure in ways that directly influence plant growth, root development, and stress tolerance. Research into organic amendments helps scientists understand how soil health interventions can sustainably boost plant productivity and resilience without reliance on synthetic inputs.
open_in_new WikipediaPubMed · 2026-04-29
A 4-year study found that planting white mulberry trees alongside organic compost (vermicompost and biogas slurry) dramatically rehabilitated the toxic, acidic soils left behind by rare-earth mines — raising pH from dangerously acidic to near-neutral and increasing organic matter more than sixfold while improving crop yields and soil microbial life.
Vermicompost combined with biogas slurry raised soil pH from 4.37 to 6.67 — shifting it from strongly acidic to near-neutral over four years.
Soil organic matter increased more than sixfold, from 4.87 to 30.58 g·kg⁻¹, under the organic amendment treatments.
The combination of white mulberry phytoremediation and organic fertilizers improved soil enzyme activity, microbial community diversity, and measurable crop yield compared to chemical fertilizer controls.
