Journal article
Hybrid brown coal-urea fertiliser reduces nitrogen loss compared to urea alone
The Science of the total environment, Vol.601-602, pp.1496-1504
01/12/2017
PMID: 28605867
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Source: InCites
Abstract
Synthetic nitrogen (N) fertilisers, such as urea, are susceptible to rapid dissipation from soil. More gradual release of mineral N from fertiliser may reduce the off-site movement of mineral N, thereby enhancing N supply to crops and minimising negative off-site impacts. We hypothesised that granulation of urea with humified brown coal (BC) delays mineral N release and maintains higher concentrations of N in soil than conventional urea granules. Four different brown coal-urea granules, with C:N ratios of 1‐10, were prepared by pan granulation. Advanced spectroscopic and X-ray powder diffraction (XRD) techniques confirmed loading of urea-N into the BC structure. Nitrogen-release from BCU granules was slower than from urea, resulting in higher N retention over a longer period for increasing growth and N uptake by crop plants. This trend increased with higher loading of BC, emphasising the significant role of BC in N retention. These findings support the hypothesis that BC is suitable for developing slow release N fertilisers.
Details
- Title
- Hybrid brown coal-urea fertiliser reduces nitrogen loss compared to urea alone
- Creators
- Biplob K. Saha - Monash UniversityMichael T. Rose - NSW Department of Primary IndustriesVanessa Wong - Monash UniversityTimothy R. Cavagnaro - University of AdelaideAntonio F. Patti - Monash University
- Publication Details
- The Science of the total environment, Vol.601-602, pp.1496-1504
- Publisher
- Elsevier
- Number of pages
- 9
- Grant note
- FT120100463 / Australian Research Council Brown Coal Innovation Australia (BCIA) Monash University Institute of Graduate Research Faculty of Science
- Identifiers
- 991013125991302368
- Copyright
- © 2017 Elsevier B.V. All rights reserved.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article