Greenhouse gas balances and yield-scaled emissions for storage and field application of organic fertilizers derived from cattle manure

Agriculture Ecosystems & Environment, Год журнала: 2023, Номер 345, С. 108327 - 108327

Опубликована: Янв. 3, 2023

Manure treatment such as anaerobic digestion and solid-liquid separation has shown a potential to abate greenhouse gas (GHG) emissions, but few studies have considered GHG emissions from both storage field application regarding crop yield. In this study, four different organic fertilizers were studied: untreated cattle manure (CA); digestate of anaerobically co-digested with grass-clover (DD); liquid fraction the DD (LF); derived biogas desulfurization biofilter enriched sulfur ammonium (NS). The CH4, N2O NH3 during CA, LF between August November 2020 (11 weeks) quantified. Storage continued until April 2021 when these materials, well NS fertilizer mineral NKS fertilizer, applied at rate 100 kg total N ha−1 spring barley. soil content monitored growing season. Overall, CH4 main source independent treatments, accounting for 85 %, 40 % 11 (based on N) treatments LF, respectively. Anaerobic significantly reduced due diminished degradable matter available methanogens. DD, not different. Treatments emitted more than CA storage, presumably because higher pH content. experiment, dilute solution most N2O, while comparable. Yield-scaled periods 44.4, 17.1, 8.5 24.3 CO2 eq hkg−1 grain yield, or without thus effective strategies mitigation in study. Yields nitrogen use efficiencies processed materials those observed same inorganic hence promising strategies.

Язык: Английский

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Forest and grassland cover types reduce net greenhouse gas emissions from agricultural soils

The Science of The Total Environment, Год журнала: 2016, Номер 571, С. 1115 - 1127

Опубликована: Июль 21, 2016

Язык: Английский

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Urea-based fertilization strategies to reduce yield-scaled N oxides and enhance bread-making quality in a rainfed Mediterranean wheat crop

Agriculture Ecosystems & Environment, Год журнала: 2018, Номер 265, С. 421 - 431

Опубликована: Июль 7, 2018

Urea fertilizer applications to calcareous soils can result in significant nitrous oxide (N2O) and nitric (NO) emissions, predominantly via nitrification rather than denitrification. To address this, we explored several mitigation strategies based on improved urea management a rainfed winter wheat (Triticum aestivum L.) crop during two consecutive cropping seasons with contrasting rainfall quantities distribution. The investigated included the split application of at top dressing, use inhibitors (e.g. 2-(3,4-dimethyl-1H-pyrazol-1-yl) succinic acid isomeric mixture, DMPSA, nitrapyrin), urease inhibitor N-butyl thiophosphorictriamide (NBPT), or double DMPSA + NBPT. Emissions N2O, NO, methane (CH4), as well measurements grain straw yield bread-making quality (protein content, reserve protein composition: glutenins gliadins) were measured. Nitrogen (N) efficiency (NUE) N surplus also calculated. Results affected by rainfall, since first season experienced typical quantity distribution, whilst second was very dry, thus increasing significantly yield-scaled emissions surplus, markedly decreasing NUE. In comparison single without inhibitors, all treatments generally decreased surface-scaled urea+DMPSA being most effective consistent option. Split NBPT did not mitigate dry season, because marked peaks oxides after flowering, caused inefficient uptake. NBPT+DMPSA led best balance between efficiency, (i.e. increments total protein, gliadins glutenins). We observe any effect (except season) composition gluten proteins. Our results suggest that should be recommended semi-arid crops.

Язык: Английский

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Fate of 15 N-labelled ammonium nitrate with or without the new nitrification inhibitor DMPSA in an irrigated maize crop

Soil Biology and Biochemistry, Год журнала: 2017, Номер 116, С. 193 - 202

Опубликована: Окт. 24, 2017

Nitrification inhibitors, originally proposed for nitrate leaching mitigation, are recommended as effective nitrous oxide (N2O) mitigation strategies. Several compounds have been trialled and used in the past including dicyandiamide (DCD) or 3,4-dimethylpyrazole phosphate (DMPP). Yet, little is known about new nitrification inhibitor 2-(3,4-dimethyl-1H-pyrazol-1-yl) succinic acid isomeric mixture (DMPSA). A field experiment using 15N single-labelled ammonium (15NH4NO3 NH415NO3) was conducted to understand effectiveness of DMPSA on a biochemical basis an irrigated maize (Zea mays L.) crop. Gaseous fluxes, i.e. N2O, 15N2O, 15N2, methane (CH4), carbon dioxide (CO2) were measured, well soil mineral N, yield components recovery plant soil. During cropping period, use significantly reduced cumulative N2O emissions (118 g N ha−1) compared without (231 ha−1). The analyses revealed that most losses (particularly during emission peak) came from 15NH4NO3 (i.e. nitrification, nitrifier denitrification and/or coupled denitrification) rather than NH415NO3 this calcareous low C-content As expected, decreased 15NH4+ oxidation, but effect non-target microorganisms noticed, shown by significant reduction respiration rates coming 15NO3−. No CH4 oxidation 15N2 fluxes observed. did not lead improvement dry weights grain biomass, although increment root biomass 64% found. This compound also tended increase (average 67.8%) decrease 18.3%) differences statistically significant. Conversely, residual fertilizer-N 15–30 cm 30–45 layers. confirmed highly tool reduce crops semi-arid areas.

Язык: Английский

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Management of pig manure to mitigate NO and yield-scaled N2O emissions in an irrigated Mediterranean crop

Agriculture Ecosystems & Environment, Год журнала: 2016, Номер 238, С. 55 - 66

Опубликована: Сен. 30, 2016

Язык: Английский

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Carbon budget and greenhouse gas balance during the initial years after rice paddy conversion to vegetable cultivation

The Science of The Total Environment, Год журнала: 2018, Номер 627, С. 46 - 56

Опубликована: Янв. 28, 2018

Язык: Английский

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Global Research Alliance N₂O chamber methodology guidelines: Guidelines for gap‐filling missing measurements

Journal of Environmental Quality, Год журнала: 2020, Номер 49(5), С. 1186 - 1202

Опубликована: Авг. 12, 2020

Nitrous oxide (N2 O) is a potent greenhouse gas that primarily emitted from agriculture. Sampling limitations have generally resulted in discontinuous N2 O observations over the course of any given year. The status quo for interpolating between sampling points has been to use simple linear interpolation. This can be problematic with emissions, since they are highly variable and bias around these peak emission periods dramatic impacts on cumulative emissions. Here, we outline five gap-filling practices: interpolation, generalized additive models (GAMs), autoregressive integrated moving average (ARIMA), random forest (RF), neural networks (NNs) used soil To facilitate improved methods, describe methods then provide strengths challenges or weaknesses each method so model selection improved. We protocol details data organization selection, splitting into training testing datasets, building models, reporting results. Use advanced within standardized likely increase transparency, improve estimates, reduce uncertainty, capacity quantify impact mitigation practices.

Язык: Английский

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Evaluating annual soil carbon emissions under biochar-added farmland subjecting from freeze-thaw cycle

Journal of Environmental Management, Год журнала: 2024, Номер 365, С. 121506 - 121506

Опубликована: Июнь 19, 2024

Язык: Английский

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Soil organic matter, greenhouse gases and net global warming potential of irrigated conventional, reduced-tillage and organic cropping systems

Nutrient Cycling in Agroecosystems, Год журнала: 2016, Номер 107(1), С. 49 - 62

Опубликована: Ноя. 14, 2016

Язык: Английский

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Nitrous oxide emissions from winter oilseed rape cultivation

Agriculture Ecosystems & Environment, Год журнала: 2017, Номер 249, С. 57 - 69

Опубликована: Авг. 24, 2017

Winter oilseed rape (Brassica napus L., WOSR) is the major oil crop cultivated in Europe. Rapeseed predominantly used for production of biodiesel. The framework European Renewable Energy Directive requires that use biofuels achieves GHG savings at least 50% compared to fossil fuel starting 2018. However, N2O field emissions are estimated using emission factors not specific and associated with strong uncertainty. controlled by N fertilization dominate balance WOSR cropping due high global warming potential N2O. Thus, experiments were conducted increase data basis subsequently derive a new WOSR-specific factor. yields monitored three years over range intensities five study sites representative German production. fluxes exhibited typical spatial temporal variability dependence on soil texture, weather nitrogen availability. annual ranged between 0.24 kg 5.48 N2O-N ha−1 a−1. increased emissions, particularly highest treatment (240 ha−1). Oil yield up fertilizer amount 120 ha−1, higher N-doses grain but decreased concentrations seeds. Consequently remained constant fertilization. Since, yield-related also exponentially surpluses, there reduction rate, which offers perspectives mitigation emissions. Our measurements double published flux WOSR. Based this extended dataset we modeled relationship input an exponential model. corresponding factor was 0.6% applied common under best management practice (200 a−1). This substantially lower than linear IPCC Tier 1 (EF1) 1.0% other models have been proposed.

Язык: Английский

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