Effect of nitrogen fertilizer management and waterlogging on nitrous oxide emission from subtropical sugarcane soils

Allen, Diane E.; Kingston, G.; Rennenberg, Heinz; Dalal, Ram C.; Schmidt, Susanne

doi:10.1016/j.agee.2009.11.002

Cited by 154 publications

(130 citation statements)

References 29 publications

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“…4c, d), suggested that mineral N availability was not the primary driving factor of N 2 O production in this cropping system. This differed from previous observations in other Australian sugarcane cropping systems where N fertiliser application significantly increased N 2 O emissions from soil (Allen et al 2010;Wang et al 2012;. The dry weather conditions during the initial two and a half months of the cropping season ( Fig.…”

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

confidence: 68%

“…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: 65%

“…Agriculture is responsible for~74% and 80% of the anthropogenic N 2 O emissions in Australia and the world, respectively (IPCC 2014;Department of Environment 2014;FAO 2015). 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;.…”

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 contrasting

confidence: 68%

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

confidence: 65%

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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“…Daily N 2 O fluxes were plotted using Sigma Plot software, version 10 (Systat Software, 2006). Cumulative emissions were calculated by linear interpolation between adjacent sampling dates (Allen et al, 2010). Total cumulative emission was submitted to ANOVA, and means were compared (Tukey p ≤ 0.05) using SISVAR statistical software.…”

Section: Methodsmentioning

confidence: 99%

Enhanced-Efficiency Fertilizers in Nitrous Oxide Emissions from Urea Applied to Sugarcane

et al. 2015

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The environmental benefits of producing biofuels from sugarcane have been questioned due to greenhouse gas emissions during the biomass production stage, especially nitrous oxide (N 2 O) associated with nitrogen (N) fertilization. The objective of this work was to evaluate the use of nitrification inhibitors (NIs) dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) and a controlled-release fertilizer (CRF) to reduce N 2 O emissions from urea, applied at a rate of 120 kg ha -1 of N. Two field experiments in ratoon cycle sugarcane were performed in Brazil. The treatments were (i) no N (control), (ii) urea, (iii) urea+DCD, (iv) urea+DMPP, and (v) CRF. Measurements of N 2 O fluxes were performed using static chambers with four replications. The measurements were conducted three times per week during the first 3 mo and biweekly afterward for a total of 217 and 382 d in the first and second seasons, respectively. The cumulative N 2 O-N emissions in the first ratoon cycle were 1098 g ha -1 in the control treatment and 1924 g ha -1 with urea (0.7% of the total N applied). Addition of NIs to urea reduced N 2 O emissions by more than 90%, which did not differ from those of the plots without N. The CRF treatment showed N 2 O emissions no different from those of urea. The results were similar in the second ratoon: the treatment with urea showed N 2 O emissions of 0.75% of N applied N. Application of NIs resulted in a strong reduction in N 2 O emissions, but CRF increased emissions compared with urea. We therefore conclude that both NIs can be options for mitigation of greenhouse gas emission in sugarcane used for bioenergy.

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“…Varying effects of splitting N fertiliser on N 2 O emissions have been found in previous studies. Some authors found no effects or reduced N 2 O emissions (Burton et al 2008;Allen et al 2010;Schwenke et al 2016), depending on the timing of significant rainfall events in relation to N applications. In contrast, Venterea and Coulter (2015) found splitting N fertiliser increased N 2 O emissions compared with a single application.…”

Section: Simulation Of Mitigation Optionsmentioning

confidence: 99%

Nitrous oxide emissions from grain production systems across a wide range of environmental conditions in eastern Australia

et al. 2016

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Abstract. Nitrous oxide (N 2 O) emissions from Australian grain cropping systems are highly variable due to the large variations in soil and climate conditions and management practices under which crops are grown. Agricultural soils contribute 55% of national N 2 O emissions, and therefore mitigation of these emissions is important. In the present study, we explored N 2 O emissions, yield and emissions intensity in a range of management practices in grain crops across eastern Australia with the Agricultural Production Systems sIMulator (APSIM). The model was initially evaluated against experiments conducted at six field sites across major grain-growing regions in eastern Australia. Measured yields for all crops used in the experiments (wheat, barley, sorghum, maize, cotton, canola and chickpea) and seasonal N 2 O emissions were satisfactorily predicted with R 2 = 0.93 and R 2 = 0.91 respectively. As expected, N 2 O emissions and emissions intensity increased with increasing nitrogen (N) fertiliser input, whereas crop yields increased until a yield plateau was reached at a site-and crop-specific N rate. The mitigation potential of splitting N fertiliser application depended on the climate conditions and was found to be relevant only in the southern grain-growing region, where most rainfall occurs during the cropping season. Growing grain legumes in rotation with cereal crops has great potential to reduce mineral N fertiliser requirements and so N 2 O emissions. In general, N management strategies that maximise yields and increase N use efficiency showed the greatest promise for N 2 O mitigation.

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Effect of nitrogen fertilizer management and waterlogging on nitrous oxide emission from subtropical sugarcane soils

Cited by 154 publications

References 29 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

Enhanced-Efficiency Fertilizers in Nitrous Oxide Emissions from Urea Applied to Sugarcane

Nitrous oxide emissions from grain production systems across a wide range of environmental conditions in eastern Australia

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