Zeolite mitigates N2O emissions in paddy fields under alternate wetting and drying irrigation

Guangyan Liu; Junlin Zheng; Taotao Chen; Xuda Chen; Wei Chen; Yidi Sun; Poul Erik Lærke; Yinglong Chen; Kadambot H.M. Siddique; Daocai Chi; Ji Chen

doi:10.1016/j.agee.2022.108145

Zeolite mitigates N₂O emissions in paddy fields under alternate wetting and drying irrigation

Guangyan Liu, Junlin Zheng, Taotao Chen, Xuda Chen, Wei Chen, Yidi Sun, Poul Erik Lærke, Yinglong Chen, Kadambot H.M. Siddique, Daocai Chi^*, Ji Chen

^*Corresponding author for this work

Department of Agroecology - Climate and Water
CBIO - Centre for Circular Bioeconomy, Foulum
iCLIMATE Aarhus University Interdisciplinary Centre for Climate Change - iCLIMATE Aarhus University Interdisciplinary Centre for Climate Change, Foulum

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

20 Citations (Scopus)

Abstract

Increasing studies indicate that alternate wetting and drying irrigation (I_AWD) can significantly increase water use efficiency in paddy fields, whereas this method may also cause high nitrous oxide (N₂O) emissions. Therefore, effective management strategies are urgently required for ameliorating the adverse effect of I_AWD on N₂O emissions. Zeolite is increasingly used as a potential effective soil conditioner to reduce N₂O emissions. However, few studies have been conducted to explore the effect of zeolite on N₂O emissions and rice grain yield as well as the associated soil physicochemical properties in paddy fields under I_AWD. Here, a two-year field experiment was conducted using lysimeters to assess the effect of two irrigation regimes (I_CF: continuously flooded irrigation; I_AWD: alternate wetting and drying irrigation) and two zeolite management regimes (Z_U: urea alone (non-zeolite control); Z_UZ: urea combined with zeolite (15 t ha⁻¹)) on N₂O emissions, rice grain yield, and soil physicochemical properties. The results showed that I_AWD significantly increased N₂O emissions by 18% relative to I_CF, and Z_UZ significantly reduced N₂O emissions under I_AWD by 9% compared to Z_U. I_AWD had no significant effect on rice grain yield compared to I_CF. However, Z_UZ significantly enhanced rice grain yield under I_CF and I_AWD by 11% and 14%, respectively, compared to Z_U. Accordingly, Z_UZ significantly decreased yield-scaled N₂O emissions under I_CF and I_AWD by 13% and 19%, respectively, compared to Z_U. Increases in soil NH₄⁺-N concentrations and soil pH contribute to the N₂O mitigation in Z_UZ under I_AWD. Altogether, our results highlight that zeolite combined with urea is likely a sustainable resource-efficient approach for mitigating N₂O emissions while increasing rice grain yield in paddy fields under I_AWD.

Original language	English
Article number	108145
Journal	Agriculture, Ecosystems and Environment
Volume	339
Number of pages	11
ISSN	0167-8809
DOIs	https://doi.org/10.1016/j.agee.2022.108145
Publication status	Published - Nov 2022

Keywords

Alternate wetting and drying irrigation
Nitrous oxide emissions
Rice grain yield
Zeolite management regimes

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10.1016/j.agee.2022.108145

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@article{380ce15da97543ab8e8ed37805720861,

title = "Zeolite mitigates N2O emissions in paddy fields under alternate wetting and drying irrigation",

abstract = "Increasing studies indicate that alternate wetting and drying irrigation (IAWD) can significantly increase water use efficiency in paddy fields, whereas this method may also cause high nitrous oxide (N2O) emissions. Therefore, effective management strategies are urgently required for ameliorating the adverse effect of IAWD on N2O emissions. Zeolite is increasingly used as a potential effective soil conditioner to reduce N2O emissions. However, few studies have been conducted to explore the effect of zeolite on N2O emissions and rice grain yield as well as the associated soil physicochemical properties in paddy fields under IAWD. Here, a two-year field experiment was conducted using lysimeters to assess the effect of two irrigation regimes (ICF: continuously flooded irrigation; IAWD: alternate wetting and drying irrigation) and two zeolite management regimes (ZU: urea alone (non-zeolite control); ZUZ: urea combined with zeolite (15 t ha−1)) on N2O emissions, rice grain yield, and soil physicochemical properties. The results showed that IAWD significantly increased N2O emissions by 18% relative to ICF, and ZUZ significantly reduced N2O emissions under IAWD by 9% compared to ZU. IAWD had no significant effect on rice grain yield compared to ICF. However, ZUZ significantly enhanced rice grain yield under ICF and IAWD by 11% and 14%, respectively, compared to ZU. Accordingly, ZUZ significantly decreased yield-scaled N2O emissions under ICF and IAWD by 13% and 19%, respectively, compared to ZU. Increases in soil NH4+-N concentrations and soil pH contribute to the N2O mitigation in ZUZ under IAWD. Altogether, our results highlight that zeolite combined with urea is likely a sustainable resource-efficient approach for mitigating N2O emissions while increasing rice grain yield in paddy fields under IAWD.",

keywords = "Alternate wetting and drying irrigation, Nitrous oxide emissions, Rice grain yield, Zeolite management regimes",

author = "Guangyan Liu and Junlin Zheng and Taotao Chen and Xuda Chen and Wei Chen and Yidi Sun and L{\ae}rke, {Poul Erik} and Yinglong Chen and Siddique, {Kadambot H.M.} and Daocai Chi and Ji Chen",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = nov,

doi = "10.1016/j.agee.2022.108145",

language = "English",

volume = "339",

journal = "Agriculture, Ecosystems and Environment",

issn = "0167-8809",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Zeolite mitigates N2O emissions in paddy fields under alternate wetting and drying irrigation

AU - Liu, Guangyan

AU - Zheng, Junlin

AU - Chen, Taotao

AU - Chen, Xuda

AU - Chen, Wei

AU - Sun, Yidi

AU - Lærke, Poul Erik

AU - Chen, Yinglong

AU - Siddique, Kadambot H.M.

AU - Chi, Daocai

AU - Chen, Ji

PY - 2022/11

Y1 - 2022/11

N2 - Increasing studies indicate that alternate wetting and drying irrigation (IAWD) can significantly increase water use efficiency in paddy fields, whereas this method may also cause high nitrous oxide (N2O) emissions. Therefore, effective management strategies are urgently required for ameliorating the adverse effect of IAWD on N2O emissions. Zeolite is increasingly used as a potential effective soil conditioner to reduce N2O emissions. However, few studies have been conducted to explore the effect of zeolite on N2O emissions and rice grain yield as well as the associated soil physicochemical properties in paddy fields under IAWD. Here, a two-year field experiment was conducted using lysimeters to assess the effect of two irrigation regimes (ICF: continuously flooded irrigation; IAWD: alternate wetting and drying irrigation) and two zeolite management regimes (ZU: urea alone (non-zeolite control); ZUZ: urea combined with zeolite (15 t ha−1)) on N2O emissions, rice grain yield, and soil physicochemical properties. The results showed that IAWD significantly increased N2O emissions by 18% relative to ICF, and ZUZ significantly reduced N2O emissions under IAWD by 9% compared to ZU. IAWD had no significant effect on rice grain yield compared to ICF. However, ZUZ significantly enhanced rice grain yield under ICF and IAWD by 11% and 14%, respectively, compared to ZU. Accordingly, ZUZ significantly decreased yield-scaled N2O emissions under ICF and IAWD by 13% and 19%, respectively, compared to ZU. Increases in soil NH4+-N concentrations and soil pH contribute to the N2O mitigation in ZUZ under IAWD. Altogether, our results highlight that zeolite combined with urea is likely a sustainable resource-efficient approach for mitigating N2O emissions while increasing rice grain yield in paddy fields under IAWD.

AB - Increasing studies indicate that alternate wetting and drying irrigation (IAWD) can significantly increase water use efficiency in paddy fields, whereas this method may also cause high nitrous oxide (N2O) emissions. Therefore, effective management strategies are urgently required for ameliorating the adverse effect of IAWD on N2O emissions. Zeolite is increasingly used as a potential effective soil conditioner to reduce N2O emissions. However, few studies have been conducted to explore the effect of zeolite on N2O emissions and rice grain yield as well as the associated soil physicochemical properties in paddy fields under IAWD. Here, a two-year field experiment was conducted using lysimeters to assess the effect of two irrigation regimes (ICF: continuously flooded irrigation; IAWD: alternate wetting and drying irrigation) and two zeolite management regimes (ZU: urea alone (non-zeolite control); ZUZ: urea combined with zeolite (15 t ha−1)) on N2O emissions, rice grain yield, and soil physicochemical properties. The results showed that IAWD significantly increased N2O emissions by 18% relative to ICF, and ZUZ significantly reduced N2O emissions under IAWD by 9% compared to ZU. IAWD had no significant effect on rice grain yield compared to ICF. However, ZUZ significantly enhanced rice grain yield under ICF and IAWD by 11% and 14%, respectively, compared to ZU. Accordingly, ZUZ significantly decreased yield-scaled N2O emissions under ICF and IAWD by 13% and 19%, respectively, compared to ZU. Increases in soil NH4+-N concentrations and soil pH contribute to the N2O mitigation in ZUZ under IAWD. Altogether, our results highlight that zeolite combined with urea is likely a sustainable resource-efficient approach for mitigating N2O emissions while increasing rice grain yield in paddy fields under IAWD.

KW - Alternate wetting and drying irrigation

KW - Nitrous oxide emissions

KW - Rice grain yield

KW - Zeolite management regimes

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U2 - 10.1016/j.agee.2022.108145

DO - 10.1016/j.agee.2022.108145

M3 - Journal article

AN - SCOPUS:85138494831

SN - 0167-8809

VL - 339

JO - Agriculture, Ecosystems and Environment

JF - Agriculture, Ecosystems and Environment

M1 - 108145

ER -

Zeolite mitigates N₂O emissions in paddy fields under alternate wetting and drying irrigation

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