Global evaluation of inhibitor impacts on ammonia and nitrous oxide emissions from agricultural soils: A meta‐analysis

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(17), P. 5121 - 5141

Published: June 9, 2022

Inhibitors are widely considered an efficient tool for reducing nitrogen (N) loss and improving N use efficiency, but their effectiveness is highly variable across agroecosystems. In this study, we synthesized 182 studies (222 sites) worldwide to evaluate the impacts of inhibitors (urease [UI], nitrification [NI] combined inhibitors) on crop yields gaseous (ammonia [NH3 ] nitrous oxide [N2 O] emissions) explored responses different management environmental factors including inhibitor application timing, fertilization regime, cropping system, water management, soil properties climatic conditions using subgroup meta-analysis, meta-regression multivariate analyses. The UI were most effective in enhancing (by 5%) NH3 volatilization 51%), whereas NI at N2 O emissions 49%). mitigates increases especially high -N scenarios, would minimize net resultant low scenarios. Alternatively, enables producers balance production conservation goals without pollution tradeoffs. efficacy decreasing was dependent upon practices. Notably, both analyses suggest that provide a greater opportunity fertilizer inputs high-N-surplus systems presumably favor yield enhancement under deficiency situations. pursuit improved understanding interactions between plant-soil-climate-management types should continue optimize losses while increasing productivity.

Language: Английский

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A global meta‐analysis of yield‐scaled N₂O emissions and its mitigation efforts for maize, wheat, and rice

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(2)

Published: Feb. 1, 2024

Abstract Maintaining or even increasing crop yields while reducing nitrous oxide (N 2 O) emissions is necessary to reconcile food security and climate change, the metric of yield‐scaled N O emission (i.e., per unit yield) at present poorly understood. Here we conducted a global meta‐analysis with more than 6000 observations explore variation patterns controlling factors for maize, wheat rice associated potential mitigation options. Our results showed that average across all available data followed order (322 g Mg −1 , 95% confidence interval [CI]: 301–346) > maize (211 CI: 198–225) (153 144–163). Yield‐scaled individual crops were generally higher in tropical subtropical zones temperate zones, also trend towards lower intensities from low high latitudes. This was better explained by climatic edaphic fertilizer management, their combined effect predicted 70% variance. Furthermore, our analysis significant decrease use efficiency production systems cereal >10 ha (maize), 6.6 (wheat) 6.8 (rice), respectively. highlights indicators can be used as valuable proxies reconciling trade‐offs between mitigation. For three major staple crops, fertilization up 30%, optimizing timing placement application using enhanced‐efficiency fertilizers significantly reduced similar yields. data‐driven assessment provides some key guidance developing effective targeted adaptation strategies sustainable intensification production.

Language: Английский

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Trade-offs between agronomic and environmental benefits: A comparison of inhibitors with controlled release fertilizers in global maize systems

Field Crops Research, Journal Year: 2025, Volume and Issue: 323, P. 109768 - 109768

Published: Feb. 1, 2025

Language: Английский

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Data‐driven estimates of fertilizer‐induced soil NH₃, NO and N₂O emissions from croplands in China and their climate change impacts

Global Change Biology, Journal Year: 2021, Volume and Issue: 28(3), P. 1008 - 1022

Published: Nov. 5, 2021

Gaseous reactive nitrogen (Nr) emissions from agricultural soils to the atmosphere constitute an integral part of global N cycle, directly or indirectly causing climate change impacts. The extensive use fertilizer in crop production will compromise our efforts reduce Nr China. A national inventory N-induced gaseous croplands China remains be developed reveal its role shaping change. Here we present a data-driven estimate soil based on regional and crop-specific emission factors (EFs) compiled 379 manipulative studies. In China, synthetic manure 2018 are estimated 3.81 0.73 Tg yr-1 , with combined contribution 23%, 20% 15% total ammonia (NH3 ), nitrous oxide (N2 O) nitric (NO), respectively. Over past three decades, NH3 volatilization has experienced shift rapid increase decline trend, whereas N2 O NO always maintain strong growth momentum due robust continuous rise EFs. Regionally, Central south (1.51 ) East (0.99 exhibit as hotspots emissions. terms emissions, rice, maize vegetable show leading emitters, together accounting for 61% fertilizer-induced croplands. warming effect derived cropland was found dominate over local cooling effects Our established EFs forms provide new benchmark constraining IPCC Tier 1 default EF values. spatio-temporal insight into data application is expected advance towards more accurate inventories effective mitigation strategies.

Language: Английский

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Improving potato productivity and mitigating nitrogen losses using enhanced-efficiency fertilizers: A global meta-analysis

Agriculture Ecosystems & Environment, Journal Year: 2023, Volume and Issue: 348, P. 108416 - 108416

Published: Feb. 20, 2023

Language: Английский

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The optimum nitrogen fertilizer rate for maize in the US Midwest is increasing

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 5, 2025

Fertilizing maize at an optimum nitrogen rate is imperative to maximize productivity and sustainability. Using a combination of long-term (n = 379) short-term 176) experiments, we show that the economic for US production has increased by 2.7 kg N ha−1 yr−1 from 1991 2021 (1.2% per year) simultaneously with grain yields losses. By accounting societal cost estimates losses, estimate environmental rate, which also over time but lower than rate. Furthermore, provide evidence reducing rates could reduce 6% while slightly We call enhanced assessments predictability meet rising avoiding unnecessary Maize dependent on Nitrogen fertilizer input. Here, authors use experiments demonstrate fertilization have between 2021.

Language: Английский

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Effects of Nitrification Inhibitors on Soil Nitrification and Ammonia Volatilization in Three Soils with Different pH

Agronomy, Journal Year: 2021, Volume and Issue: 11(8), P. 1674 - 1674

Published: Aug. 23, 2021

The application of nitrification inhibitors (NIs) is considered to be an efficient way delay nitrification, but the effect NIs combinations on soil and ammonia (NH3) volatilization are not clear in soils with different pH values. In this study, we explored nitrapyrin (CP) its 3, 4-dimethylepyrazole phosphate (DMPP), dicyandiamide (DCD) transformation nitrogen, potential rate (PNR), a 120-day incubation experiment three values black soil. Treatments included no fertilizer (Control), ammonium sulfate (AS), AS+CP (CP), AS+CP+DMPP (CP+DMPP), AS+CP+DCD (CP+DCD). significantly decreased NO3−-N contents (p < 0.05), while increased NH4+-N especially CP+DCD CP+DMPP were most effective neutral alkaline soils, respectively. acid soil, CP total NH3 by 31%, reduced 28% compared AS. However, significant difference was found without treatments > 0.05) soils. conclusion, combined had better efficiency all tested inhibiting clay higher value lower organic matter, mitigating environment pollution reducing N loss loam matter. It provided theoretical basis for high Further studies under field conditions required assess effects these inhibitors.

Language: Английский

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Evaluation of Various Nitrogen Indices in N-Fertilizers with Inhibitors in Field Crops: A Review

Agronomy, Journal Year: 2021, Volume and Issue: 11(3), P. 418 - 418

Published: Feb. 25, 2021

Nitrogen (N) management remains a global challenge for the sustainability of diversified farming systems. Field crops are often over-supplied with nitrogen by farmers aiming to high productivity. Although increase rates leads in many instances yields, degree effectiveness use low. Urease and nitrification inhibitors technologies which have been present fertilizers market at least 50 years. Inhibitors exploitation ensures long-term release improved N-uptake plants N-storage seeds silage. Avail inhibitors, such as decline leaching form NO3−, reduction emissions NH3 form, rise yield, some desirable attributes that derived from their integration fertilization schedules. This review reports evaluation applied nitrogen, field based on indices. The examined N-indicators include efficiency (NUE), Utilization Efficiency (NUtE,) Agronomic (NAE), Harvest Index (NHI), N uptake. gathered all, best our knowledge, available data regarding utilization urease under an exclusively agronomic perspective. Either dual or single has reported significantly yield components promote To conclude, assessment N-related indices is vital promoting systems, while national fertilizations schemes may contribute system profitability through enhancement N-supply crops.

Language: Английский

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Assessing the impacts of diversified crop rotation systems on yields and nitrous oxide emissions in Canada using the DNDC model

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 759, P. 143433 - 143433

Published: Nov. 1, 2020

Language: Английский

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Recent trends in nitrogen cycle and eco-efficient nitrogen management strategies in aerobic rice system

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: Aug. 25, 2022

Rice ( Oryza sativa L.) is considered as a staple food for more than half of the global population, and sustaining productivity under scarcity resources challenging to meet future demands inflating population. The aerobic rice system can be transformational replacement traditional rice, but widespread adaptation this innovative approach has been challenged due higher losses nitrogen (N) reduced N-use efficiency (NUE). For normal growth developmental processes in crop plants, N required amounts. mineral nutrient an important constituent amino acids, nucleic many photosynthetic metabolites, hence essential plant metabolism. Excessive application fertilizers improves yield, compromises economic environmental sustainability. Irregular uncontrolled use have elevated several issues linked form nitrous oxide (N 2 O), ammonia (NH 3 ), nitrate (NO – thereby threatening sustainability warming potential, ozone depletion capacities, abilities eutrophicate water resources. Hence, enhancing NUE become urgent need development sustainable production system. This article was designed investigate major challenge low evaluate recent advances pathways cycle system, suggest agronomic management approaches improve NUE. objective review about optimizing inputs while ensuring safety. elaborates that different soil conditions significantly shift dynamics via changes comprehensively reviews facts why are high which factors hinder attaining NUE, how it eco-efficient through managements. Moreover, explores interactive mechanisms proper accomplished optimized fertilizer amendments. Meanwhile, study suggests agricultural approaches, such site-specific management, integrated (INM), incorporation with enhanced may interactively uptake Additionally, resource conservation practices, residue green manuring, improved genetic breeding, precision farming, enhance Deep insights into necessarily suggested adjustments reduce Future research on encouraged focusing evaluation shifts among activities diversity microbial communities, applying measures, necessary its face projected climate change

Language: Английский

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