Emissions of methane and nitrous oxide from Australian sugarcane soils

Denmead, O. T.; MacDonald, Bennett; Bryant, Glenn; Naylor, Travis A; Wilson, Stephen R.; Griffith, David; Wang, Weijin; Salter, B; White, Ian; Moody, P. W.

doi:10.1016/j.agrformet.2009.06.018

Cited by 152 publications

(143 citation statements)

References 24 publications

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“…Very high daily N 2 O emissions (>500 g N ha -1 day -1 ) like those in early January 2013 (Fig. 4c, d) have also been observed in other sugarcane cropping systems in Australia (Allen et al 2010;Denmead et al 2010;Wang et al 2012; but seldom recorded in subtropical cereal or cotton cropping systems even after similar rainfall or irrigation events (Wang et al 2011;Scheer et al 2013). The concurrence of the warm and wet soil conditions in sugarcane fields in the months after N fertiliser application around the summer season are conducive to high N 2 O emissions.…”

Section: Processes and Factors Affecting Soil Mineral N Dynamics And supporting

confidence: 60%

“…Previous studies show that annual N 2 O emissions from Australian sugarcane cropping soils were high, mostly in the range of 3-15 kg N 2 O-N ha -1 year -1 with the emission factors of fertiliser N (EF = % of fertiliser N lost as N 2 O) generally between 1.3% and 4.5% (Allen et al 2010;Wang et al 2012;Wang et al 2015;. Extraordinarily high N 2 O emissions (28.2 kg N 2 O-N ha -1 year -1 measured with manual chambers and 45.9 kg N 2 O-N ha -1 year -1 using a micrometeorological method) were observed from a low-lying acid sulfate soil containing 9.8% organic carbon (C) on a sugarcane farm in northern New South Wales, Australia (Denmead et al 2010;. Of the limited number of year-long measurements in sugarcane fields in other countries, 1.9 and 4.5 kg N 2 O-N ha -1 year -1 (EF = 0.69% and 2.03%) were recorded in Brazil where 120 kg N ha -1 was applied as urea and ammonium nitrate, respectively (Carmo et al 2013;Soares et al 2015).…”

Section: Introductionmentioning

confidence: 99%

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Nitrous oxide emission and fertiliser nitrogen efficiency in a tropical sugarcane cropping system applied with different formulations of urea

et al. 2016

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Abstract. Nitrous oxide (N 2 O) emissions from sugarcane cropped soils are usually high compared with those from other arable lands. Nitrogen-efficient management strategies are needed to mitigate N 2 O emissions from sugarcane farming whilst maintaining productivity and profitability. A year-long field experiment was conducted in wet tropical Australia to assess the efficacy of polymer-coated urea (PCU) and nitrification inhibitor (3,4-dimethylpyrazole phosphate)-coated urea (NICU). Emissions of N 2 O were measured using manual and automatic gas sampling chambers in combination. The nitrogen (N) release from PCU continued for >5-6 months, and lower soil NO 3 -contents were recorded for !3 months in the NICU treatments compared with the conventional urea treatments. The annual cumulative N 2 O emissions were high, amounting to 11.4-18.2 kg N 2 O-N ha -1 . In contrast to findings in most other cropping systems, there were no significant differences in annual N 2 O emissions between treatments with different urea formulations and application rates (0, 100 and 140 kg N ha -1 ). Daily variation in N 2 O emissions at this site was driven predominantly by rainfall. Urea formulations did not significantly affect sugarcane or sugar yield at the same N application rate. Decreasing fertiliser application rate from the recommended 140 kg N ha -1 to 100 kg N ha -1 led to a decrease in sugar yield by 1.3 t ha -1 and 2.2 t ha -1 for the conventional urea and PCU treatments, respectively, but no yield loss occurred for the NICU treatment. Crop N uptake also declined at the reduced N application rate with conventional urea, but not with the PCU and NICU. These results demonstrated that substituting NICU for conventional urea may substantially decrease fertiliser N application from the normal recommended rates whilst causing no yield loss or N deficiency to the crop. Further studies are required to investigate the optimal integrated fertiliser management strategies for sugarcane production, particularly choice of products and application time and rates, in relation to site and seasonal conditions.

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Section: Processes and Factors Affecting Soil Mineral N Dynamics And supporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Nitrous oxide emission and fertiliser nitrogen efficiency in a tropical sugarcane cropping system applied with different formulations of urea

et al. 2016

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“…In the last decade, substantial progress has been made in the use of tunable diode laser absorption spectroscopy (TDLAS) and quantum cascade lasers (QCL) as well as devices originating from individual applications such as Fourier transform infrared (FTIR) spectrometers. The precision and fast response of these approaches has allowed first EC measurements of field scale N 2 O and CH 4 fluxes (Rinne et al, 2005;Denmead et al, 2010;Kroon et al, 2010;Neftel et al, 2010;Tuzson et al, 2010) as well as first NO 2 fluxes (Horii et al, 2004), whereas measurements of NH 3 fluxes by EC have been extremely limited (Famulari et al, 2004;Sutton et al, 2007;Sintermann et al, 2011), and are subject to substantial uncertainty (e.g. Shaw et al, 1998).…”

Section: Exchange Measurements Of Reactive Nitrogen Compoundsmentioning

confidence: 99%

TRANC – a novel fast-response converter to measure total reactive atmospheric nitrogen

Marx¹,

Brümmer

Ammann

et al. 2012

Atmos. Meas. Tech.

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Abstract. The input and loss of plant available nitrogen (reactive nitrogen: N r ) from/to the atmosphere can be an important factor for the productivity of ecosystems and thus for its carbon and greenhouse gas exchange. We present a novel converter for reactive nitrogen (TRANC: Total Reactive Atmospheric Nitrogen Converter), which offers the opportunity to quantify the sum of all airborne reactive nitrogen compounds ( N r ) in high time resolution. The basic concept of the TRANC is the full conversion of all N r to nitrogen monoxide (NO) within two reaction steps. Initially, reduced N r compounds are being oxidised, and oxidised N r compounds are thermally converted to lower oxidation states. Particulate N r is being sublimated and oxidised or reduced afterwards. In a second step, remaining higher nitrogen oxides or those generated in the first step are catalytically converted to NO with carbon monoxide used as reduction gas. The converter is combined with a fast response chemiluminescence detector (CLD) for NO analysis and its performance was tested for the most relevant gaseous and particulate N r species under both laboratory and field conditions. Recovery rates during laboratory tests for NH 3 and NO 2 were found to be 95 and 99 %, respectively, and 97 % when the two gases were combined. In-field longterm stability over an 11-month period was approved by a value of 91 % for NO 2 . Effective conversion was also found for ammonium and nitrate containing particles. The recovery rate of total ambient N r was tested against the sum of individual measurements of NH 3 , HNO 3 , HONO, NH + 4 , NO − 3 , and NO x using a combination of different well-established devices. The results show that the TRANC-CLD system precisely captures fluctuations in N r concentrations and also matches the sum of all individual N r compounds measured by the different single techniques. The TRANC features a specific design with very short distance between the sample air inlet and the place where the thermal and catalytic conversions to NO occur. This assures a short residence time of the sample air inside the instrument, and minimises wall sorption problems of water soluble compounds. The fast response time (e-folding times of 0.30 to 0.35 s were found during concentration step changes) and high accuracy in capturing the dominant N r species enables the converter to be used in an eddy covariance setup. Although a source attribution of specific N r compounds is not possible, the TRANC is a new reliable tool for permanent measurements of the net N r flux between ecosystem and atmosphere at a relatively low maintenance and reasonable cost level allowing for diurnal, seasonal and annual investigations.

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“…While monocultures such as sugarcane bring progress and development to the expanding agricultural frontiers, they also impose a burden of environmental impacts, in the case of sugarcane especially the emission of greenhouse gases, particularly of CO 2 , CH 4 and N 2 O, resulting from the use of N fertilizers mainly applied to the soil surface after harvest (Soares et al, 2009;Denmead et al, 2010). In view of this scenario it is crucial to invest in research on alternatives that would ensure a competitive and sustainable development of the sugarcane industry.…”

Section: Introductionmentioning

confidence: 99%

Inoculation of sugarcane with diazotrophic bacteria

Schultz

Silva

Sousa

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYThe sugarcane industry, a strategic crop in Brazil, requires technological improvements in production efficiency to increase the crop energy balance. Among the various currently studied alternatives, inoculation with diazotrophic bacteria proved to be a technology with great potential. In this context, the efficiency of a mixture of bacterial inoculant was evaluated with regard to the agronomic performance and N nutrition of sugarcane. The experiment was carried out on an experimental field of Embrapa Agrobiologia, in Seropédica, Rio de Janeiro, using a randomized block, 2 × 3 factorial design (two varieties and three treatments) with four replications, totaling 24 plots. The varieties RB867515 and RB72454 were tested in treatments consisting of: inoculation with diazotrophic bacteria, N-fertilized control with 120 kg ha -1 N and absolute control (no inoculation and no N fertilizer). The inoculum was composed of five strains of five diazotrophic species. The yield, dry matter accumulation, total N in the shoot dry matter and the contribution of N by biological fixation were evaluated, using the natural 15 N abundance in non-inoculated sugarcane as reference. The bacterial inoculant increased the stalk yield of variety RB72454 similarly to fertilization with 120 kg ha -1 N in the harvests of plant-cane and first ratoon crops, however the contribution of biological N fixation was unchanged by(1) Part of the doctoral thesis of the first author, Post-graduation course in Agronomy -Soil Science (CPGA-CS) at the Rural Federal University of Rio de Janeiro -UFRRJ. Received for publication on January 16, 2013 and approved on January 6, 2014. (2) Post-graduate student at CPGA-CS, Soil Science Department, UFRRJ. BR 465, km 7. CEP 23890-000 Seropédica (RJ), Brazil. O aumento da eficiência produtiva da cana-de-açúcar com tecnologias que possibilitem aumentar seu balanço energético é uma necessidade do setor sucroenergético, por se tratar de uma cultura estratégica para o país. Entre as diversas alternativas atualmente estudadas, o inoculante com bactérias diazotróficas vem se evidenciando uma tecnologia com elevado potencial. Diante desse contexto, este estudo teve como objetivo avaliar a eficiência do inoculante bacteriano no desempenho agronômico e na nutrição nitrogenada da cana-de-açúcar. O ensaio foi realizado no campo experimental da Embrapa Agrobiologia, em Seropédica, RJ. O delineamento experimental foi em bloco ao acaso, em esquema fatorial 2 × 3 (duas variedades e três tratamentos), com quatro repetições, totalizando 24 parcelas. As variedades utilizadas foram a RB867515 e RB72454. Os tratamentos foram: inoculação com bactérias diazotróficas, controle nitrogenado com 120 kg ha -1 de N e controle absoluto (sem inoculação e sem N). O inoculante foi composto por cinco estirpes de cinco espécies de bactérias diazotróficas. As variáveis avaliadas foram a produtividade de colmos, o acúmulo de matéria seca e N total da parte aérea das plantas e a contribuição da fixação biológica de N (FBN), utilizando como referên...

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Emissions of methane and nitrous oxide from Australian sugarcane soils

Cited by 152 publications

References 24 publications

Nitrous oxide emission and fertiliser nitrogen efficiency in a tropical sugarcane cropping system applied with different formulations of urea

Nitrous oxide emission and fertiliser nitrogen efficiency in a tropical sugarcane cropping system applied with different formulations of urea

TRANC – a novel fast-response converter to measure total reactive atmospheric nitrogen

Inoculation of sugarcane with diazotrophic bacteria

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