Phosphorus retention and availability in three contrasting soils amended with rice husk and corn cob biochar at varying pyrolysis temperatures

• Published in: Geoderma Vol. 341; pp. 10 - 17
• Main Authors: Eduah, J.O., Nartey, E.K., Abekoe, M.K., Breuning-Madsen, H., Andersen, M.N.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2019
• Subjects: acid soils; adsorption; alkaline soils; aluminum; bioavailability; biochar; calcium phosphates; Corn cob biochar; corn cobs; Desorption; feedstocks; iron; Phosphorus; potassium chloride; pyrolysis; Pyrolysis temperature; rice hulls; Rice husk biochar; soil amendments; Sorption; sorption isotherms; temperature; tropical soils; Sorption; Phosphorus; Pyrolysis temperature; Desorption; Rice husk biochar; Corn cob biochar

The reactive nature of phosphorus (P) leads to the formation of insoluble Fe, Al and Ca phosphates in highly weathered tropical soils, thus reducing P availability for plant uptake. Biochar with its heterogeneous surface properties as influenced by feedstock and pyrolysis temperature can affect P re...