Liming promotes soil nitrite accumulation but reduces subsequent abiotic nitrous oxide emissions DOI Creative Commons
Suyun Li, Danni Cai, Muhammad Shaaban

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 14, 2023

Abstract Aims The mechanisms underlying nitrous oxide (N 2 O) production in limed soils with N fertilizer application are not well understood. This study aimed to investigate the effects of liming on nitrite (NO - ) accumulation and its contribution subsequent O varying concentrations ammonium (NH 4 + additions (50, 100, 250 mg NH -N kg -1 soil). Methods Soil microcosm incubation was designed NO acidic vegetable soil after different levels inputs. Sterilization samples used distinguish biotic abiotic productions. DNA extraction relative functional gene detection provided molecular evidence. Results Elevating pH alkaline (pH 8.5) through caused a shift microbial community, an increase abundance ammonia oxidizing bacteria (AOB) decrease (NOB). resulted conversion half added , higher leading more cumulative . However, resulting from relatively modest (max. 0.89 μg per hour). Further experiments demonstrated that 81.9-93.6% associated driven by processes under aerobic conditions, while drove 42.4-54.8% anaerobic conditions. Additionally, reduced 92% compared observed soil. Conclusion Liming promotes but reduces emissions.

Language: Английский

Manganese and phosphorus maize shoot concentrations are differently affected by nitrification inhibitor‐driven rhizosphere acidification DOI Creative Commons

Mathew Edung Etabo,

Pablo Lacerda Ribeiro, Britta Pitann

et al.

Soil Use and Management, Journal Year: 2024, Volume and Issue: 40(2)

Published: April 1, 2024

Abstract High soil pH can lead to Mn 2+ and P deficiency yield losses. In addition, it is unclear which process, nitrification‐induced acidification of bulk or nitrification inhibitor‐driven rhizosphere acidification, more effective in increasing availability shoot concentration. Thus, this topic was investigated study. Moreover, we also evaluated if applying NIs avoid with high buffering capacity. Two greenhouse experiments were carried out investigate the impact 3,4‐Dimethylpyrazole phosphate (DMPP) sandy subjected application different lime rates, simulating several capacity conditions. The utilized rates 0, 0.5, 1, 2 4 g CaCO 3 kg −1 . measured variables pH, availability, maize biomass production, as well concentrations. DMPP significantly reduced by 10% unlimed soil; however, promoted overall 30% limed both experiments. decreased concentration 24 21% I II, respectively. contrast, increased due 17% did not under highest rate (4 ) despite alleviating it. conclusion, beneficial for and, when performed increase soils, should consider likelihood causing deficiency.

Language: Английский

Citations

3
Partial substitution of manure increases N2O emissions in the alkaline soil but not acidic soils DOI
Haoruo Li, Xiaotong Song, Di Wu

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 359, P. 120993 - 120993

Published: April 30, 2024

Language: Английский

Citations

3
Refining the Factors Affecting N2O Emissions from Upland Soils with and without Nitrogen Fertilizer Application at a Global Scale DOI
Wenqian Jiang,

Siqi Li,

Yong Li

et al.

Advances in Atmospheric Sciences, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

Language: Английский

Citations

3
Tracing the contribution and fate of synthetic nitrogen fertilizer in young apple orchard agrosystems DOI

Zhaoxia Zheng,

Chao Shi, Zhang Ai

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 932, P. 173103 - 173103

Published: May 8, 2024

Language: Английский

Citations

2
Nine years of low-dose biochar amendment suppresses nitrification rate in low-yield brown soil DOI
Yue Li, Huanhuan Wei, Mingqi Liu

et al.

Applied Soil Ecology, Journal Year: 2023, Volume and Issue: 192, P. 105096 - 105096

Published: Aug. 17, 2023

Language: Английский

Citations

5
Decoupling the simultaneous effects of NO2−, pH and free nitrous acid on N2O and NO production from enriched nitrifying activated sludge DOI Creative Commons
Yingfen Zhao, Haoran Duan, Dirk V. Erler

et al.

Water Research, Journal Year: 2023, Volume and Issue: 245, P. 120609 - 120609

Published: Sept. 10, 2023

In the pursuit of energy and carbon neutrality, nitrogen removal technologies have been developed featuring nitrite (NO2-) accumulation. However, high NO2- accumulations are often associated with stimulated greenhouse gas (i.e., nitrous oxide, N2O) emissions. Furthermore, coexistence free acid (FNA) formed by proton (pH) makes consequence accumulation on N2O emissions complicated. The concurrent three factors, NO2-, pH FNA may play different roles nitric oxide (NO) simultaneously, which has not systematically studied. This study aims to decouple effects (0-200 mg N/L), (6.5-8) (0-0.15 N/L) NO production rates pathways ammonia oxidizing bacteria (AOB), use a series precisely executed batch tests isotope site-preference analysis. Results suggested dominant factors affecting rate were concentrations, while alone played relatively insignificant role. most influential factor shifted from as concentrations increased 0 0.15 N/L. At below 0.0045 HNO2-N/L, rather than significant role stimulating at elevated concentrations. inhibition effect emerged further increase between 0.0045-0.015 weakening promoting nitrite. While above 0.015 inhibited especially nitrifier denitrification pathway level linearly correlated concentration. concentration regulated pathways, nitrification pathway, pathway. contrast N2O, emission was less susceptible up N/L but increasing study, for first time, distinguished pH, production, thereby providing support design operation novel systems

Language: Английский

Citations

5
Dry rainfed conditions are key drivers of the effect of conservation tillage and a nitrification inhibitor on N fate and N2O emissions: A field 15N tracing study DOI Creative Commons
Sandra García‐Gutiérrez, Guillermo Guardia, Mónica Montoya

et al.

Geoderma, Journal Year: 2023, Volume and Issue: 432, P. 116424 - 116424

Published: March 10, 2023

The sustainability of rainfed crops under semiarid conditions is threatened by low plant nitrogen (N) recovery as well the potential loss reactive N to environment. A field 15N tracing experiment on barley (Hordeum vulgare L.) was carried out study how different tillage management practices and use nitrification inhibitor DMPSA affected fate N. consisted a factorial combination (i.e., no tillage, NT, conventional T) fertilizer treatments (unfertilized control ammonium nitrate, AN, with or without DMPSA). Single-labelled nitrate (15NH4NO3, 15AN, NH415NO3, A15N) applied at top-dressing microplots rate 80 kg ha−1. Our results show that modulates process from both fertilizer-N endogenous soil-N (which main contributor uptake N2O emissions), affecting soil residual end cropping period higher topsoil retention 15AN in DMPSA-amended plots). Generally, cumulative emissions were derived rather than A15N, thus confirming site-specific choice source synthetic an effective mitigation strategy. Two months after harvest, rewetting event produced remarkable emission peak drove total also mainly These suggest dry seasons could decrease losses fertilization while causing critical peaks rewetting, potentially limiting effectiveness strategies. average 22.6%, combined NT enhanced soil-N. This be result improved crop development acquisition consistent for A15N deeper layer nontilled plots. contributes mechanistic understanding effect inhibitors emissions, dynamics recovery, revealing relevant effects strategies role conditions. It can concluded that, our study, combining help improve resulting positive impacts climate change adaptation.

Language: Английский

Citations

4
Improved Method for Extracting Nitrites in Soil DOI Creative Commons

Yaqi Song,

Dianming Wu, Peter Dörsch

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(2), P. 331 - 331

Published: Feb. 5, 2024

Soil nitrite (NO2−) is an important reactive intermediate in many nitrogen transformation processes, but it unstable under acidic conditions and may be lost as gaseous N. The canonical extraction method of soil NO2− using a potassium chloride (KCl) solution greatly underestimates its concentration. To reflect the concentration more accurately, we optimized for three agricultural soils differing texture pH, alkalic fluvo-aquic Mollisol Ultisol soils, respectively. Both extractable ammonium (NH4+) nitrate (NO3−) were systematically investigated to optimize simultaneous inorganic nitrogen. effects different extractants (deionized water (DIW), un-buffered 2 mol L−1 KCl, pH-buffered KCl), shaking time (10 30 min), storage duration extracts (stored at −20 °C 1 day, 4 1, 3, 6 days) on determination investigated. results showed that KCl extractant significantly underestimated compared DIW. highest recovery was obtained by extracting with DIW 10 min all soils. Compared DIW, NH4+ NO3− extracted from increased significantly. Furthermore, content stored one day closer direct measurements fresh samples than other methods. Overall, recommended analysis min, filtering 0.45 µm filter, while shaken min. extract should analyzed within 24 h. Our study provides efficient supports studies biogeochemical cycle, e.g., investigation nitrous acid (HONO) nitric oxide (NO) emissions.

Language: Английский

Citations

1
Impacts of High-Frequency Chicken Manure Biochar Application on N2O and CH4 Emissions from Vegetable Field in Subtropical China DOI Creative Commons

Mohammad Jawad Alami,

Xuejuan Fang,

Dongliang Zhong

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(5), P. 926 - 926

Published: April 28, 2024

Vegetable production in Subtropical China is distinguished by excessive nitrogen (N) fertilization, frequent irrigation, and multiple crop rotations a single year. The aforementioned variables are closely related to soil nitrous oxide (N2O) methane (CH4) emissions. Hence, we conducted field trial measure N2O CH4 emissions using static chamber–gas chromatograph. Four treatments were used: control (CK) with no fertilizer, 100% chemical N fertilization (CN), the conventional 30% chicken manure plus 70%CN (CMN + CN), biochar (CMBN CN). annual cumulative reached 12.4, 63.5, 111.8, 44.1 kg N2O-N ha−1 for CK, CN, CMN CMBN CN treatments, respectively. Compared treatment reduced 35.9%–65.7%, while it simultaneously increased total vegetable yield 16.1% compared treatment. Seven seasons mean emission factors 1.3% 3.8% 0.9% CN. was negligible, ranging from 0.07 CH4-C CK 0.8 peaked under conditions of an interior chamber temperature around 31.9 °C water-filled pore space (WFPS) being approximately 60%. Future climate change will intensify, triggering higher subtropical fields. CMB can be one best substitutes direct application as supplement because has beneficial effect on improving reducing China.

Language: Английский

Citations

1
The use of small emitter flow rate favored the transfer of N2O production to deeper soil to reduce yield-scaled emissions in drip-irrigated potato fields DOI
Jianyu Zhao,

Kaijing Yang,

Fengxin Wang

et al.

Field Crops Research, Journal Year: 2024, Volume and Issue: 313, P. 109426 - 109426

Published: May 28, 2024

Language: Английский

Citations

1