
Product Description:
Bone Char – Product Introduction
Bone Char is a black, porous, carbon-rich material produced by the pyrolysis of animal bones under low-oxygen conditions. It consists primarily of calcium phosphate (Ca5(PO4)3OH) and amorphous carbon, giving it a unique combination of adsorptive capacity and chemical stability.
Bone Char (Bone Black) is a natural soil amendment ideal for treating acidic and low-phosphorus soils, especially in sustainable or organic farming systems.
Chemical Composition:
Calcium Phosphate (Ca5(PO4)3OH): ~70-80%
Carbon (Fixed Carbon): ~10-15%
Other Components: Trace minerals and moisture
Rich in Phosphorus (P):
Bone char typically contains 30–35% P₂O₅, mostly in the form of calcium phosphate. This provides a slow-release phosphorus source, ideal for long-term crop feeding without leaching losses.
Neutralizes Soil Acidity:
The calcium content in bone char helps buffer acidic soils. By increasing soil pH slightly, it creates a better environment for root development and nutrient uptake.
Phosphorus Solubility:
In acidic soils, phosphorus from bone char becomes more plant-available due to increased solubility of calcium phosphate under low pH conditions.

Bone Char is a low-solubility, high-impact phosphorus source that gently corrects soil acidity and nutrient deficiencies. It’s especially effective in acidic, weathered, or tropical soils where conventional P fertilizers are prone to leaching or fixation.
Tips for Better Performance:
1, Combine with organic matter to stimulate microbial breakdown.
2, Apply during soil preparation or early growth stages for best results.
3, Reapply every 2–3 seasons, depending on crop and soil conditions.

Package and Storage:
Packing: 25kg or 50kg woven bags, or as required
Storage: Store in a cool, dry place away from moisture and pests
Shelf Life: 2 years



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