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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Nitrogen Dynamics in Soil Fertilized with Slow Release Brown Coal-Urea Fertilizers
Scientific reports, Vol.8, 14577
01/10/2018
PMCID: PMC6167360
PMID: 30275451
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Abstract
Reducing the release rate of urea can increase its use efficiency and minimize negative effects on the environment. A novel fertilizer material that was formed by blending brown coal (BC) with urea, delayed fertilizer N release in controlled climatic conditions in a glasshouse, through strong retention facilitated by the extensive surface area, porous structure and chemical functional groups in the BC. However, the role of BC as a carrier of synthetic urea and the effect of their interaction with various soil types on the dynamics and mineralization of N remains largely unclear. Therefore, a soil column incubation study was conducted to assess the release, transformation and transportation of N from several different brown coal-urea (BCU) granules, compared to commercial urea. Blending and subsequent granulation of urea with BC substantially increased fertilizer N retention in soil by decreasing gaseous emissions and leaching of N compared to urea alone, irrespective of soil type. The BCU granule containing the highest proportion of BC had lower leaching and gaseous emissions and maintained considerably higher mineral and mineralizable N in topsoil. Possible modes of action of the BCU granules have been proposed, emphasizing the role of BC in enhancing N retention over a longer period of time. The results support the notion that BCU granules can be used as a slow release and enhanced efficiency fertilizer for increasing availability and use efficiency of N by crops.
Details
- Title
- Nitrogen Dynamics in Soil Fertilized with Slow Release Brown Coal-Urea Fertilizers
- Creators
- Biplob K. Saha - Monash UniversityMichael T. Rose - NSW Department of Primary IndustriesVanessa N. L. Wong - Monash UniversityTimothy R. Cavagnaro - University of AdelaideAntonio F. Patti - Monash University
- Publication Details
- Scientific reports, Vol.8, 14577
- Publisher
- Springer Nature
- Number of pages
- 10
- Grant note
- Brown Coal Innovation Australia (BCIA) Monash University
- Identifiers
- 991013125991502368
- Copyright
- © The Author(s) 2018 This article is licensed under a Creative Commons Attribution 4.0 International License, (http://creativecommons.org/licenses/by/4.0/).
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article