A slow release brown coal-urea fertiliser reduced gaseous N loss from soil and increased silver beet yield and N uptake
| dc.contributor.author | Saha, B. | |
| dc.contributor.author | Rose, M. | |
| dc.contributor.author | Wong, V. | |
| dc.contributor.author | Cavagnaro, T. | |
| dc.contributor.author | Patti, A. | |
| dc.date.issued | 2019 | |
| dc.description.abstract | Increasing crop yield and fertiliser nitrogen (N)-use efficiency is important for productive agricultural systems with a reduced environmental footprint. The aim of this study was to assess the effect of slow release brown coal-urea (BCU) fertiliser on the gaseous N losses, biomass yield and N uptake by silver beet (Beta vulgaris L.) compared to commercial urea. Two soils were amended with urea, BCU 1 (22% N) or BCU 2 (17% N) as N-fertiliser at the rate of 50 or 100 kg N ha-1. Five gas sampling periods were undertaken to measure the loss of N as N2O and NH3. After 10 weeks, biomass, N concentration, and N uptake of silver beet, and mineral and mineralisable N of post-harvest soil were measured. BCU substantially increased fertiliser N availability and uptake by silver beet, reduced N2O emission by 29% and NH3 emission by 36% compared to urea alone, irrespective of soil type. Compared to urea, BCU blends increased biomass yield by 27% and 23% in a Tenosol and Dermosol soil, respectively. In addition, application of BCU fertiliser substantially enhanced the potentially mineralisable N and organic carbon content of soil. These results provide evidence that granulation of urea with brown coal (BC) can increase silver beet N-use efficiency and yield in different soil types, and more work is now required to validate this technology for other crops. | |
| dc.description.statementofresponsibility | Biplob K.Saha, Michael T.Rose, Vanessa N.L.Wong, Timothy R.Cavagnaro, Antonio F.Patti | |
| dc.identifier.citation | Science of the Total Environment, 2019; 649:793-800 | |
| dc.identifier.doi | 10.1016/j.scitotenv.2018.08.145 | |
| dc.identifier.issn | 0048-9697 | |
| dc.identifier.issn | 1879-1026 | |
| dc.identifier.orcid | Cavagnaro, T. [0000-0002-9922-5677] | |
| dc.identifier.uri | http://hdl.handle.net/2440/118963 | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.rights | © 2018 Published by Elsevier B.V. | |
| dc.source.uri | https://doi.org/10.1016/j.scitotenv.2018.08.145 | |
| dc.subject | Brown coal; urea; slow release fertiliser; biomass yield; fertiliser N use efficiency; humic acid | |
| dc.title | A slow release brown coal-urea fertiliser reduced gaseous N loss from soil and increased silver beet yield and N uptake | |
| dc.type | Journal article | |
| pubs.publication-status | Published |