Cover crops and N fertilization affect soil ammonia volatilization and N2O emission by regulating the soil labile carbon and nitrogen fractions

Zhang, Zhenggui; Wang, Jian; Huang, Weibin; Chen, Jiale; Wu, Fengqi; Jia, Yaoyu; Han, Yingchun; Wang, Guoping; Feng, Lu; Li, Xiaofei; Lei, Yaping; Yang, Beifang; Xiong, Shiwu; Xin, Minghua; Li, Yabing; Wang, Zhanbiao

doi:10.1016/j.agee.2022.108188

Cited by 27 publications

(6 citation statements)

References 35 publications

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“…While green manure decomposition enhances NH 3 emissions, studies have shown that ammonia volatilization from shoot decomposition post - green manure application constitutes only 0.31% the total farmland ammonia volatilization ( Ferrara et al., 2021 ). Chemical nitrogen fertilizers remain the primary source of ammonia volatilization, and incorporating leguminous green manure with these fertilizers amplifies soil ammonia losses ( Zhang et al., 2022 ). Introducing leguminous green manure not only boosts the mineralization potential of organic nitrogen but also enhances ammonification and nitrification of ammonium nitrogen fertilizer, resulting in elevated NH 3 emissions ( Sun et al., 2021 ).…”

Section: Response and Key Mechanisms Of Soil Nitrogen Transformation ...mentioning

confidence: 99%

Drive soil nitrogen transformation and improve crop nitrogen absorption and utilization - a review of green manure applications

Lyu,

Li,

Wang

et al. 2024

Front. Plant Sci.

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Green manure application presents a valuable strategy for enhancing soil fertility and promoting ecological sustainability. By leveraging green manures for effective nitrogen management in agricultural fields can significantly reduce the dependency of primary crops on chemical nitrogen fertilizers, thereby fostering resource efficiency. This review examines the current advancements in the green manure industry, focusing on the modulation of nitrogen transformation in soil and how crops absorb and utilize nitrogen after green manure application. Initially, the influence of green manure on soil nitrogen transformation is delineated, covering processes such as soil nitrogen immobilization, and mineralization, and losses including NH3, N2O, and NO3−-N leaching. The review then delves into the effects of green manure on the composition and function of soil microbial communities, highlighting their role in nitrogen transformation. It emphasizes the available nitrogen content in the soil, this article discussing nitrogen uptake and utilization by plants, including aspects such as nitrogen translocation, distribution, the root system, and the rhizosphere environment of primary crops. This provides insights into the mechanisms that enhance nitrogen uptake and utilization when green manures are reintroduced into fields. Finally, the review anticipates future research directions in modulating soil nitrogen dynamics and crop nitrogen uptake through green manure application, aiming to advance research and the development of the green manure sector.

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Section: Response and Key Mechanisms Of Soil Nitrogen Transformation ...mentioning

confidence: 99%

Drive soil nitrogen transformation and improve crop nitrogen absorption and utilization - a review of green manure applications

Lyu,

Li,

Wang

et al. 2024

Front. Plant Sci.

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“…NH 3 volatilization from the soil was determined by the sponge tracking and KCL extraction methods [29]. The trapping device consisted of a rigid PVC pipe (the diameter was 15 cm and the height was 20 cm) and a ventilated rain cover.…”

Section: Soil Nh 3 Sampling and Analysismentioning

confidence: 99%

The Application of Rice Straw with Reduced N Fertilizer Improves the Rice Yield While Decreasing Environmental N Losses in Southern China

Liu,

Ma,

Wan

et al. 2024

Sustainability

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To investigate the effects of straw residues with reduced nitrogen (N) fertilizer on greenhouse gas (GHG) and N losses in paddy fields, we conducted a field experiment during two growing seasons in paddy rice systems in southern China to evaluate the impacts of the application of straw residues with reduced N fertilizer on rice yield, GHG emissions, and ammonia (NH3) volatilization. The four treatments included N100 (conventional dose of N fertilizer), SN100 (conventional dose of N fertilizer + straw), N60 (60% of the conventional dose of N fertilizer), and SN60 (60% of the conventional dose of N fertilizer + straw). We found that the yield of the SN60 treatment was slightly reduced, but the partial factor productivity of applied N (PFPN) was significantly increased by 63.9% compared to the N100 treatment. At the same N application rate, the application of straw increased soil organic C (SOC), methane (CH4) emissions, carbon dioxide (CO2) emissions, global warming potential (GWP), greenhouse gas intensity (GHGI), and net ecosystem carbon budget (NECB), but significantly decreased soil N2O emissions and NH3 volatilization. Compared with conventional fertilization (N100), straw residues with reduced N fertilization (SN60) reduced N2O emissions and NH3 volatilization by 42.1% and 23.9%, and increased GHGI and NECB by 11.1% and 18.3%, respectively. The results indicate that straw residues with reduced N fertilizer are a feasible strategy to reduce N losses in paddy fields while increasing carbon sequestration.

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“…Reduction of soil N by uptake of an overwintering crop in a relay or other cover crop system might also help reduce soil N 2 O emissions (Schepers et al, 2005). However, results for relay systems have been mixed with reports of reduced (Zhang et al, 2022), increased (Emmett et al, 2022), or no change (O'Brian et al, 2022) in N 2 O emissions as compared with conventional monocropping. This is a knowledge gap where more research is needed to better understand the complex interactions in the soil with plant roots, fertilization, and microbial activity.…”

Section: Residual Nitrogen Capturementioning

confidence: 99%

Relay cropping as an adaptive strategy to cope with climate change

et al. 2023

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Climate change and its complex interactions with crops and cropping systems present challenges to agricultural production. Resilient systems that provide food security for a burgeoning population, built by improving crops and developing new alternative cropping systems, are needed to cope with the myriad impacts climate change has on agriculture. Relay cropping is a systems strategy to sustainably intensify crop production and provide environmental benefits. Relay cropping involves interseeding one plant species into an established crop, creating a temporary spatial‐temporal overlap of the two crops. This system keeps living plant cover on the agricultural landscape most of the year, which has implications for adapting to and even mitigating climate change impacts. As global warming progresses, land area suitable for relay cropping or producing more than one crop per year will likely expand to more northerly latitudes. The following review specifically focuses on relay cropping, giving examples of how it can potentially improve agricultural system resilience and adaptability to climate change and reduce greenhouse gas emissions, while also addressing potential limitations. More research is needed to improve crop genetics, crop combinations, and management practices best suited for relay cropping to further develop systems that can adapt to changing weed and insect dynamics as well as improve nitrogen and water use under current and future predictions of climate change.

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Cover crops and N fertilization affect soil ammonia volatilization and N2O emission by regulating the soil labile carbon and nitrogen fractions

Cited by 27 publications

References 35 publications

Drive soil nitrogen transformation and improve crop nitrogen absorption and utilization - a review of green manure applications

Drive soil nitrogen transformation and improve crop nitrogen absorption and utilization - a review of green manure applications

The Application of Rice Straw with Reduced N Fertilizer Improves the Rice Yield While Decreasing Environmental N Losses in Southern China

Relay cropping as an adaptive strategy to cope with climate change

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