A slow release brown coal-urea fertiliser reduced gaseous N loss from soil and increased silver beet yield and N uptake

Biplob K. Saha, Michael T. Rose, Vanessa N.L. Wong, Timothy R. Cavagnaro, Antonio F. Patti

Research output: Contribution to journalArticleResearchpeer-review

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.

Original languageEnglish
Pages (from-to)793-800
Number of pages8
JournalScience of the Total Environment
Volume649
DOIs
Publication statusPublished - 1 Feb 2019

Keywords

  • Biomass yield
  • Brown coal
  • Fertiliser N use efficiency
  • Humic acid
  • Slow release fertiliser
  • Urea

Cite this

@article{7ef83a2167fb4cde88ff7b301bc57dec,
title = "A slow release brown coal-urea fertiliser reduced gaseous N loss from soil and increased silver beet yield and N uptake",
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.",
keywords = "Biomass yield, Brown coal, Fertiliser N use efficiency, Humic acid, Slow release fertiliser, Urea",
author = "Saha, {Biplob K.} and Rose, {Michael T.} and Wong, {Vanessa N.L.} and Cavagnaro, {Timothy R.} and Patti, {Antonio F.}",
year = "2019",
month = "2",
day = "1",
doi = "10.1016/j.scitotenv.2018.08.145",
language = "English",
volume = "649",
pages = "793--800",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",

}

A slow release brown coal-urea fertiliser reduced gaseous N loss from soil and increased silver beet yield and N uptake. / Saha, Biplob K.; Rose, Michael T.; Wong, Vanessa N.L.; Cavagnaro, Timothy R.; Patti, Antonio F.

In: Science of the Total Environment, Vol. 649, 01.02.2019, p. 793-800.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - A slow release brown coal-urea fertiliser reduced gaseous N loss from soil and increased silver beet yield and N uptake

AU - Saha, Biplob K.

AU - Rose, Michael T.

AU - Wong, Vanessa N.L.

AU - Cavagnaro, Timothy R.

AU - Patti, Antonio F.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - 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.

AB - 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.

KW - Biomass yield

KW - Brown coal

KW - Fertiliser N use efficiency

KW - Humic acid

KW - Slow release fertiliser

KW - Urea

UR - http://www.scopus.com/inward/record.url?scp=85052632802&partnerID=8YFLogxK

U2 - 10.1016/j.scitotenv.2018.08.145

DO - 10.1016/j.scitotenv.2018.08.145

M3 - Article

VL - 649

SP - 793

EP - 800

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -