Using Biochar-Based Nitrogen Fertilizers to Enhance the Productivity of Low Fertility Soils

Yurong Gao, Zheng Fang, Hanbo Chen, Lukas Van Zwieten, Nanthi Bolan, Da Dong, Bert F. Quin, Jun Meng, Wenfu Chen, Hailong Wang

Research output: Chapter in Book/Conference paperChapterpeer-review


For agricultural systems, nitrogen (N) is an extremely important nutrient and is the most significant nutrient-limiting factor for productivity and constraining economic sustainability. Biochar-based N fertilizers (BBNFs) normally use a biochar/polymer coating of a synthetic fertilizer granule or through utilizing the structure of biochar for preparation. Biochar coating of mineral fertilizers is an entirely promising approach in the development of controlled-release fertilizers, providing a barrier to the dissolution and transport of nutrients thus limiting N loss pathways and mitigating environmental problems. Pseudo-first-order and pseudo-second-order kinetic models were used to investigate the cumulative N release from BBNFs. In recent years, there has been a growing focus on the impact of BBNFs on N cycling, with implications for both agronomic and environmental effects. While there is good evidence that BBNFs can improve N use efficiency, more research is needed to determine their ideal application rates and how these affect their economic feasibility when compared to traditional fertilizers.

Original languageEnglish
Title of host publicationSoil Constraints and Productivity
EditorsNanthi Bolan, M. B. Kirkham
Place of PublicationBoca Raton
PublisherCRC Press
Number of pages18
ISBN (Electronic)9781000879278
ISBN (Print)9780367554392
Publication statusPublished - 1 Jan 2023


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  • Soil Constraints and Productivity

    Bolan, N. S. & Kirkham, M. B., 1 Jan 2023, Boca Raton: CRC Press. 618 p.

    Research output: Book/ReportEdited book/Anthologypeer-review

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