remineralization
Remineralization is the microbial and chemical breakdown of organic matter—such as decaying plant tissue, root exudates, and soil biomass—into simple inorganic compounds like nitrate, phosphate, and ammonium. This process is essential for plant science because it replenishes the soil nutrient pool that roots depend on for growth, effectively closing the loop between plant death and new plant life. Understanding remineralization rates helps researchers predict nutrient availability, soil fertility, and how plant communities respond to environmental change.
open_in_new WikipediaPubMed · 2026-07-03
Adding crushed rock dust to depleted tropical soils can dramatically improve soil health within just 18 months. Combining a low dose of sedimentary rock powder with mafic rock dust raised a soil health index by 22% and boosted soil organic carbon by 17%, pointing to rock-based amendments as a practical tool for restoring degraded land.
The low-rate sedimentary rock powder combined with mafic rock dust (LC + R) increased the soil health index by 22% compared to untreated control after 18 months.
Soil organic carbon rose by 17% in the best-performing treatment, driven primarily by chemical and biological improvements rather than physical changes.
Principal component analysis confirmed clear differentiation between treatments, validating that rock dust type and application rate produce distinct, measurable soil outcomes.