Biochar of Reed (Phragmites autralis) on Representative Locations in Mekong Delta of Vietnam

A new renewable material by use reed biochar (Phragmites autralis); a species strong grows  and very high biomass, it can be exploit a  renewable resources for agriculture and environmental treatment. People often used rice husks as materials for organic fertilizers in agriculture. This study is a new discovere to made of reed biochar to filter N, P, K of  chemical mineral fertilizer and pig urine use to provide bio-organic fertilizer for rice plant (ST 25). Methods: (1) Made of biochar by use the local method; (2) analyse the chemical indicators of locations on trunks, leaves, flowers; (3) identify chemical indicators of peatland on locations of experiment; (4) adsorpting chemical fertilizer (nitrogen, phosphorus and potash), pig urine filter by reed biochar, analize its chemical indicators; (5) use fomulas of reed plant biochar mixed peat and mineral inorganic fertilizer. Results: Made of reed biochar and it can adsorpted as ammonium, nitrate, nitrogen, phosphorus and kalium the pig urine and it also adsorpted inorganic fertilizer as nitrogen, phosphorus and Kalium. Thus it used for environmental treatment in the region polluted and planting local rice ST 25 in the experiment area. Conclusion: Biochar of reed can use to environment treatment and agriculture fertilizer; chemical indicators of bichar indentified; the mixed biochar, peat and inorganic in formulas in 5 days and 10 days were not differences; biochar can adsorb some chemical components of pig urine and nitrogen, phosphorus and kalium; biochar can mixed peat and inorganic mineral to planting rice ST 25 in Mekong Delta.