Agronomic benefits of durian shell biochar


  • N Prakongkep Department of Agriculture
  • R J Gilkes The University of Western Australia
  • W Wiriyakitnateekul Land Development Department


This study investigated the chemical properties of durian shell biochar which is used as a soil amendment.  It can act as a carbon sink and as a means to improve crop yield.  Plant nutrient elements in this biochar are in crystalline minerals located within the complex pore structure therefore biochar production from wastes could be a very good way to reduce demand for fertilizers.  XRD and SEM-EDS results demonstrate that the numerous minerals in biochar are highly soluble, such as archerite (KH<sub>2</sub>PO<sub>4</sub>), chlorocalcite (KCaCl<sub>3</sub>), kalicinite (KHCO<sub>3</sub>), and sylvite (KCl) with small amounts of poorly soluble minerals (calcite CaCO<sub>3</sub> and struvite KMgPO<sub>4</sub>.6H<sub>2</sub>O).  When biochar is applied to soils at the recommended rates of tonnes/ hectare, it will be a significant source of potassium, phosphorus and other nutrient elements.  The availability of nutrients to plants will depend on properties of the biochar and the adjacent soil.


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How to Cite

N. Prakongkep, R. J. Gilkes, and W. Wiriyakitnateekul, “Agronomic benefits of durian shell biochar”, J. Met. Mater. Miner., vol. 24, no. 1, Mar. 2014.



Original Research Articles