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

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

doi:10.1016/j.agee.2022.108145

Cited by 16 publications

(2 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This may be due to the repeated dry‐wet cycles that made the soil aggregates rearrange. Thus, the impact of dry‐wet cycles on soil water retention was weakened (Fan et al., 2023; Liu et al., 2022; Yang et al., 2022; Zhang et al., 2005). In addition, the path analysis showed that the dry‐wet cycles and γ‐PGA addition rates directly or indirectly affect the θ s and θ FC , and MWD and GMD were more sensitive to θ s and θ FC than R 0.25 , wet‐dry cycles and γ‐PGA addition rates.…”

Section: Discussionmentioning

confidence: 99%

Effects of poly‐γ‐glutamic acid on soil structure and water retention characteristics under dry‐wet cycles

Jing,

Shi,

Wang

et al. 2024

Soil Use and Management

View full text Add to dashboard Cite

Poly‐γ‐glutamic acid (γ‐PGA) has been demonstrated to exhibit a soil water retention effect; however, the agricultural irrigation practices induce a cyclic pattern of wetting and drying in the soil, and its synergistic interaction with γ‐PGA remains unclear. To explore the amendment effects of γ‐PGA on pores structure, aggregates distribution, and soil water retention characteristics under dry‐wet cycles, an experiment was established with the number of dry‐wet cycles (0, 2, 4, and 8 times; a single dry‐wet cycle involved reducing soil water content from 80% to 40% of field water capacity) and γ‐PGA addition rates (0%, 4%, and 8%, represented by P0, P4, and P8, respectively). The results indicated that γ‐PGA enhanced the structure of soil pores and distribution of aggregates; especially, P8 exhibited a remarkable increase in pore number by 91.68% and mean weight diameter of aggregates by 17.17%, compared to P0. Additionally, the soil enhanced by γ‐PGA exhibited higher water retention capacity, with P4 and P8 showing average increases of 4.26% and 12.58% in saturated water content compared to P0. Notably, the effect of γ‐PGA on pores structure, aggregates distribution, and water retention characteristics was regulated by dry‐wet cycles. The γ‐PGA had the most significant improvement effect on soil structure under 8 times dry‐wet cycles, the optimal development on water retention characteristics under four times dry‐wet cycles. Therefore, these findings suggest that the optimal approach to enhance soil structure and water retention capacity is by incorporating γ‐PGA at a concentration of 0.8% in conjunction with 4–8 dry‐wet cycles.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of poly‐γ‐glutamic acid on soil structure and water retention characteristics under dry‐wet cycles

Jing,

Shi,

Wang

et al. 2024

Soil Use and Management

View full text Add to dashboard Cite

show abstract

“…In recent years, the atmospheric N 2 O concentration has increased from 270 ppb in the pre‐industrial period to 330 ppb (Tian et al., 2019). Soil is one of the important sources of atmospheric N 2 O emissions, especially in the process of flooding and drying alternately (Liu et al., 2022a; Qin et al., 2021; Xu et al., 2022). Although soil is a net source of atmospheric N 2 O in most cases, more and more researchers have found that soil also has a significant ability to absorb and consume N 2 O, forming negative N 2 O fluxes (Hansen et al., 2014; H. Liu, Li, et al., 2022).…”

Section: Introductionmentioning

confidence: 99%

N₂O consumption, uptake, and microbial reduction processes in flooded sandy loamy paddy soils

Wang,

Li,

et al. 2024

Soil Science Soc of Amer J

View full text Add to dashboard Cite

Sandy loamy soils are widely distributed in fluvial floodplains and experience flooding events frequently, resulting in a large amount of nitrous oxide (N2O) emissions. This case is more serious when the soil use is changed to paddies. It is of great significance to figure out the N2O consumption and its influencing factors in sandy loamy paddy soils to mitigate N2O emissions. In this study, three sandy loamy paddy soils (0–5 cm) originated from lake deposits were selected (S1, S2, and S3) as objectives. A certain concentration of exogenous N2O was added at the bottom of the flooded soil column to monitor the dynamics of N2O and nitrogen (N2) on the soil surface. Total N2O consumption, N2O uptake, and N2 production were quantified, and the abundance of nitrous oxide reductase genes (nosZI, and nosZII) and other soil properties (ammonium‐nitrogen, nitrate‐nitrogen, and dissolved organic carbon [DOC] content) were analyzed. The results showed that the sandy loamy paddy soil column with a depth of 0–5 cm could intercept more than 95% of the exogenous N2O under the flooded anaerobic condition, indicating that the three sandy loamy paddy soils all had extremely strong N2O consumption capacities. And the increment of N2 accounted for 68.73%–76.09% of the total N2O consumption, which had a stronger relationship with the increase of nosZI gene abundance than nosZII gene. In addition, the total N2O consumption and N2 increment of S1 and S3 soils were significantly higher than those of S2 soil. This difference was mainly related to soil organic matter content, total nitrogen content, DOC consumption, and the increase of nosZI gene abundance (p < 0.05). The strong N2O consumption potential of sandy loamy soils can provide feasible solutions for regulating N2O emissions in a wide range of similar environments in fluvial floodplains.

show abstract

Effects of warming and fertilization on paddy N2O emissions and ammonia volatilization

Deng

Xue

et al. 2023

Agriculture, Ecosystems & Environment

View full text Add to dashboard Cite

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

Cited by 16 publications

References 76 publications

Effects of poly‐γ‐glutamic acid on soil structure and water retention characteristics under dry‐wet cycles

Effects of poly‐γ‐glutamic acid on soil structure and water retention characteristics under dry‐wet cycles

N₂O consumption, uptake, and microbial reduction processes in flooded sandy loamy paddy soils

Effects of warming and fertilization on paddy N2O emissions and ammonia volatilization

Contact Info

Product

Resources

About

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

Cited by 16 publications

References 76 publications

Effects of poly‐γ‐glutamic acid on soil structure and water retention characteristics under dry‐wet cycles

Effects of poly‐γ‐glutamic acid on soil structure and water retention characteristics under dry‐wet cycles

N2O consumption, uptake, and microbial reduction processes in flooded sandy loamy paddy soils

Effects of warming and fertilization on paddy N2O emissions and ammonia volatilization

Contact Info

Product

Resources

About

N₂O consumption, uptake, and microbial reduction processes in flooded sandy loamy paddy soils