Rice husk charcoal · 인도네시아

Husk charcoal or burnt husk can be used as a planting medium, both pure planting media, hydroponic planting media, and soil-based planting media mixtures. The content contained in husk charcoal is very beneficial for plant growth, including SiO2 (52%), C (31%), Fe2O3, K2O, MgO, CaO, MnO, and Cu although in small quantities.