Ammonia volatilization from synthetic fertilizers and its mitigation strategies: A global synthesis

Pan, Baobao; Lam, Shu Kee; Mosier, A. R.; Luo, Yiqi; Chen, De-Li

doi:10.1016/j.agee.2016.08.019

Cited by 480 publications

(285 citation statements)

References 53 publications

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“…). Similar results for nBTPT in reducing NH 3 losses have also been reported ( Sanz‐Cobena et al, ; Engel et al, ; Pan et al, ). Although both UIs nearly always reduced NH 3 emissions, even the maximum reduction only corresponded to 1.4% of the fertilized N for IPAT and 0.5% for nBTPT, due to overall low losses.…”

Section: Resultssupporting

confidence: 83%

Ammonia losses from urea applied to winter wheat over four consecutive years and potential mitigation by urease inhibitors

Schraml

Weber

Heil

et al. 2018

J. Plant Nutr. Soil Sci.

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Urea is not only the most important mineral nitrogen (N) fertilizer worldwide, but it is also the mineral N fertilizer with one of the highest potential for ammonia (NH3) losses. The European emission inventory guidebook estimates an average loss of 16% of the applied urea as NH3. For mitigating NH3 losses from urea, the best option would be to immediately incorporate the fertilizer. However, the addition of a urease inhibitor (UI) represents a potent alternative. In a multi‐year experiment from 2002 to 2005, 17 measurement periods were conducted in winter wheat (Triticum aestivum L.) and on bare soil in Southern Germany to evaluate the extent of NH3 losses following the application of urea and to determine the mitigating effect of urease inhibitors. In all measurement periods, 80 kg N ha−1 as urea without or with the UI N‐(n‐butyl) thiophosphoric triamide (nBTPT) 0.3% w/w or N‐(isopropoxycarbonyl) phosphoric acid triamide (IPAT) 0.4% w/w were applied. For 6–24 d following fertilizer application, NH3 emissions were continuously measured using a dynamic chamber system. Generally, low NH3 emissions were detected from urea, varying between 0.1 and 2.7% of the N applied to winter wheat and between 2.6 and 16.3% of the N applied on bare soil. Addition of the UIs IPAT and nBTPT had a significant effect on the course of NH3 emissions and reduced losses on average by 32% and 24%, respectively.

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Section: Resultssupporting

confidence: 83%

Ammonia losses from urea applied to winter wheat over four consecutive years and potential mitigation by urease inhibitors

Schraml

Weber

Heil

et al. 2018

J. Plant Nutr. Soil Sci.

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“…Phenyl phosphorodiamidate (PPD/PPDA), hydroquinone, and N ‐(n‐butyl) thiophosphoric triamide (NBPT) are urease inhibitors, the latter being generally the most used and the most effective under both laboratory ( Carmona et al., ; Gill et al., ) and field conditions ( Sanz‐Cobeña et al., , ; Zaman et al., ; Soares et al., ; Tao et al., ). The efficacy of NBPT has been shown to be very robust across emission levels from urea, which depends on soil characteristics, environmental and weather conditions and the concentration of the inhibitor ( Sanz‐Cobeña et al., ; Pan et al., ).…”

Section: Introductionmentioning

confidence: 99%

Effect of urease and nitrification inhibitors on ammonia volatilization and abundance of N‐cycling genes in an agricultural soil

Castellano‐Hinojosa

González‐López

Vallejo

et al. 2019

J. Plant Nutr. Soil Sci.

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The effect of the combined application of urease and nitrification inhibitors on ammonia volatilization and the abundance of nitrifier and denitrifier communities is largely unknown. Here, in a mesocosm experiment, ammonia volatilization was monitored in an agricultural soil treated with urea and either or both of the urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP), with 50% and 80% water-filled pore space (WFPS). The effect of the treatments on the abundance of bacteria and archaea was estimated by quantitative PCR (qPCR) amplification of their respective 16S rRNA gene, that of nitrifiers using amoA genes, and that of denitrifiers by qPCR of the norB and nosZI denitrification genes. After application of urea, N losses due to NH 3 volatilization accounted for 23.0% and 9.2% at 50% and 80% WFPS, respectively. NBPT reduced NH 3 volatilization to 2.0% and 2.4%, whereas DMPP increased N losses by up to 36.8% and 26.0% at 50% and 80% WFPS, respectively. The combined application of NBPT and DMPP also increased NH 3 emissions, albeit to a lesser extent than DMPP alone. As compared with unfertilized control soil, both at 50% and 80% WFPS, NBPT strongly affected the abundance of bacteria and archaea, but not that of nitrifiers, and decreased that of denitrifiers at 80% WFPS. Regardless of moisture conditions, treatment with DMPP increased the abundance of denitrifiers. DMPP, both in single and in combined application with NBPT, increased the abundance of nitrification and denitrification genes.

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“…A recent global literature synthesis by Pan et al (2016) showed that use of nitrification inhibitors may increase the risks of ammonia volatilisation from some fertiliser N sources. Although nitrification inhibitor use may not increase grain yield, or modestly (7%) increases grain yield (Thapa et al 2016), better cropping system performance may be reflected in indicators of increased NUE (Burzaco et al 2014), such as plant N uptake, apparent crop N recovery (differential ratio of plant N uptake to N applied) or internal crop N efficiency (the differential ratio of grain yield to plant N uptake).…”

Section: Benefits Of Eefsmentioning

confidence: 99%

Enhanced nitrogen fertiliser technologies support the ‘4R' concept to optimise crop production and minimise environmental losses

Snyder¹

2017

Soil Res.

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Abstract. Fertiliser nitrogen (N) has been, and will continue to be, essential in nourishing, clothing and providing bioenergy for the human family. Yet, emissions of ammonia (NH 3 ) and nitrous oxide (N 2 O), and losses of nitrate-N (NO 3 -N) to surface and groundwater resources are risks associated with fertiliser N use that must be better managed to help meet expanding societal expectations. Nitrogen fertilisers with polymer coatings, or with the addition of urease and/or nitrification inhibitors, or those possessing other characteristics that afford them either improved agronomic response and/or lessened loss of N to the environment (compared with a reference water-soluble fertiliser) may be considered enhanced-efficiency N fertilisers (EEFs). Agronomic and horticultural research with these technologies has been performed for many decades, but it has been primarily in the past decade that research has increasingly also measured their efficacy in reducing N losses via volatilisation, leaching, drainage, run-off and denitrification. Expanded use of EEFs, within the '4R' concept (right source, right rate, right time, right place) of N management may help increase crop yields while minimising environmental N losses. Coupling these 4R N management tools with precision technologies, information systems, crop growth and N utilisation and transformation models, especially weather models, may improve opportunities for refined N management in the future.

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Ammonia volatilization from synthetic fertilizers and its mitigation strategies: A global synthesis

Cited by 480 publications

References 53 publications

Ammonia losses from urea applied to winter wheat over four consecutive years and potential mitigation by urease inhibitors

Ammonia losses from urea applied to winter wheat over four consecutive years and potential mitigation by urease inhibitors

Effect of urease and nitrification inhibitors on ammonia volatilization and abundance of N‐cycling genes in an agricultural soil

Enhanced nitrogen fertiliser technologies support the ‘4R' concept to optimise crop production and minimise environmental losses

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