Biochar derived from spent mushroom substrate reduced N2O emissions with lower water content but increased CH4 emissions under flooded condition from fertilized soils in Camellia oleifera plantations

Xu, Xintong; Yuan, Xi; Zhang, Qiang; Wei, Qixuan; Liu, Xiaojun; Deng, Wenping; Wang, Jiawei; Yang, Wenting; Deng, Bangliang; Zhang, Ling

doi:10.1016/j.chemosphere.2021.132110

Cited by 24 publications

(10 citation statements)

References 71 publications

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“…In addition, readily decomposable organic carbon sources were both C and N substrates for nitrification (Zhou et al 2019). Biochar amendment reduced soil N effectiveness for N 2 O production and promoted the further reduction of N 2 O to N 2 in denitrification with increased electron transfer (Xu et al 2022). However, biochar amendment increased nitrification associated N 2 O emissions 2-3 years after fertilization, which is consistent with findings by Edwards et al (2018), but reduced cumulative N 2 O emissions compared with the SN throughout the 5 years experimental period (Table 1).…”

Section: N Footprint and Edc As Affected By Biochar And Organic Subst...mentioning

confidence: 99%

“…crop straw, manure and solid waste) under oxygenlimited or anaerobic conditions (Harter et al 2016;Osman et al 2020). Recently, biochar has been extensively studied to determine its ability to enhance nutrient availability in soils (Zhang et al 2020a, b), promote crop growth (Steinbeiss et al 2009) and reduce Nr losses (Duan et al 2018;Xu et al 2022). Biochar could increase the pH and permeability of the soil (Abel et al 2013), ease biological and abiotic stresses, and improve microbial activity and biodiversity (Azeem et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production

Zhang

Zhan

et al. 2022

Biochar

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Biochar amendment and substituting chemical fertilizers with organic manure (organic substitution) have been widely reported to increase crop production and decrease reactive nitrogen (Nr) loss including nitrous oxide (N2O), nitric oxide (NO), and ammonia (NH3) emissions, and N runoff and leaching. However, few comprehensive evaluations have been performed on the environmental and economic aspects of biochar amendment or organic substitution. Here, we studied the comprehensive effects of biochar amendment, organic substitution, and biochar amendment combined with organic substitution on crop production, Nr loss, and net ecosystem economic benefit (NEEB) in intensive vegetable production by integrating life-cycle assessment for Nr footprints, empirical models for NH3 volatilization and N runoff and leaching derived from peer-reviewed publications and validated by the current measurements and direct field measurement for N2O and NO emissions during 5 consecutive years of vegetable crop rotations. Five fertilization treatments were applied (SN: synthetic fertilizer application; SNB: SN plus 20 t ha−1 biochar amendment; SNM: substituting 50% of chemical N fertilizer with organic manure; SNMB: SNM plus 20 t ha−1 biochar amendment; and CK: no fertilizer or biochar addition). Compared with the SN, the SNB increased vegetable yield (28.4%, p < 0.05; interannually varying from − 10 to 74.9%) and nitrogen use efficiency (29.2%, interannually varying from − 39.7 to 150.4%), and decreased field Nr loss (45.4%, p < 0.01; interannually varying from − 40.3 to 78.4%), and thus improved NEEB by 7.1%; meanwhile, the SNM increased vegetable yield (11.6%, interannually varying from − 5.4 to 27.1%) and nitrogen use efficiency (45.7%, p < 0.05; interannually varying from 2.3 to 154%), reduced field Nr loss (34.9%, p < 0.01; interannually varying from 8.4–39.0%), and thus improved NEEB by 17.8% (p < 0.05) compared to the SN, being 56.0 × 103 Chinese Yuan (CNY) ha−1 crop−1. Due to the high foreground Nr loss during organic manure production and high input costs of biochar production, the SNMB decreased the NEEB by 8.0% as compared to the SN. Moreover, the SNB and SNM improved vegetable qualities by increasing protein, soluble sugar, and vitamin C contents while decreasing nitrate content (p < 0.05). Therefore, single application of biochar amendment or organic substitution would achieve better NEEB and product quality in vegetable production. Graphical Abstract

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Section: N Footprint and Edc As Affected By Biochar And Organic Subst...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production

Zhang

Zhan

et al. 2022

Biochar

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“…Soil NO 3 À -N and NH 4 + -N in the test soil samples were quantified using the Discrete Auto Analyzer (SmartChem, Brookfield, USA), respectively. Soil-dissolved carbon (DOC) contents were measured using the Carbon Elementar (VarioTOC, Elementar, Germany) (Xu et al, 2022). Soil AP contents were measured by the Discrete Auto Analyzer after extracting with 0.5 mol L À1 sodium bicarbonate (NaHCO 3 ) and filtering.…”

Section: Measurements Of Chemical Properties and P Fractionsmentioning

confidence: 99%

Metagenomic insight into antagonistic effects of a nitrification inhibitor and phosphate‐solubilizing bacteria on soil protease activity

Liu,

Wang,

Nessa

et al. 2023

Land Degrad Dev

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Soil protease plays a fundamental role in soil nitrogen (N) transformations. Soil N and phosphorus (P) management significantly influence soil protease activity. However, the impacts of N and P combined modification on soil protease remain unclear. A better understanding of the activity and dynamic of soil protease could provide new insights into soil N cycling and available N supply. This study aimed to quantify the influences of combined effects of N and P managements on soil protease activities and decipher the potential mechanism from the perspectives of soil chemical properties, functional microbes, and functional genes. The nitrification inhibitor 3, 4‐dimethylpyrazole phosphate (DMPP) application or phosphate‐solubilizing bacteria (PSB) Klebsiella inoculation significantly increased soil protease activity (23.39% and 70.99%, respectively) and ammonium N (NH4+–N) contents, relative to the blank control. However, compared with the DMPP or PSB alone application, the combined applications of DMPP and PSB significantly decreased protease activity, implying that an antagonistic effect on soil protease activity was generated. The abundances of genus Klebsiella were stimulated by the DMPP or PSB but significantly inhibited by the combined additions of DMPP and PSB. The DMPP and PSB applications also significantly changed soil microbial communities and led to more complicated soil microbial co‐occurrence networks. Soil protease activity had a significantly positive correlation with the normalized abundances of tri and clpX genes. Our findings suggested that the combined additions of DMPP and PSB generated an antagonistic effect on soil protease activity and that the antagonistic effect was directly associated with soil NH4+–N and NO3−–N contents, P fractions, and functional gene abundances.

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“…The intensity of GHGs has substantially increased in recent time, which has in turn increased climate change and global warming [ 311 , 312 , 313 , 314 , 315 , 316 ]. Globally, various policies, measures and strategies are being deployed by governments to limit GHGs emissions.…”

Section: Role Of Regulatory Authorities In Implementing Environment-f...mentioning

confidence: 99%

Management Strategies to Mitigate N2O Emissions in Agriculture

Hassan

Aamer

Mahmood

et al. 2022

Life

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The concentration of greenhouse gases (GHGs) in the atmosphere has been increasing since the beginning of the industrial revolution. Nitrous oxide (N2O) is one of the mightiest GHGs, and agriculture is one of the main sources of N2O emissions. In this paper, we reviewed the mechanisms triggering N2O emissions and the role of agricultural practices in their mitigation. The amount of N2O produced from the soil through the combined processes of nitrification and denitrification is profoundly influenced by temperature, moisture, carbon, nitrogen and oxygen contents. These factors can be manipulated to a significant extent through field management practices, influencing N2O emission. The relationships between N2O occurrence and factors regulating it are an important premise for devising mitigation strategies. Here, we evaluated various options in the literature and found that N2O emissions can be effectively reduced by intervening on time and through the method of N supply (30–40%, with peaks up to 80%), tillage and irrigation practices (both in non-univocal way), use of amendments, such as biochar and lime (up to 80%), use of slow-release fertilizers and/or nitrification inhibitors (up to 50%), plant treatment with arbuscular mycorrhizal fungi (up to 75%), appropriate crop rotations and schemes (up to 50%), and integrated nutrient management (in a non-univocal way). In conclusion, acting on N supply (fertilizer type, dose, time, method, etc.) is the most straightforward way to achieve significant N2O reductions without compromising crop yields. However, tuning the rest of crop management (tillage, irrigation, rotation, etc.) to principles of good agricultural practices is also advisable, as it can fetch significant N2O abatement vs. the risk of unexpected rise, which can be incurred by unwary management.

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Biochar derived from spent mushroom substrate reduced N2O emissions with lower water content but increased CH4 emissions under flooded condition from fertilized soils in Camellia oleifera plantations

Cited by 24 publications

References 71 publications

Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production

Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production

Metagenomic insight into antagonistic effects of a nitrification inhibitor and phosphate‐solubilizing bacteria on soil protease activity

Management Strategies to Mitigate N2O Emissions in Agriculture

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