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Agronomy
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Effect of Fertilizer Application on Greenhouse Gas Emissions and Soil...
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Effect of Fertilizer Application on Greenhouse Gas Emissions and Soil Carbon Sequestration

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Farming Sustainability".

Deadline for manuscript submissions: 31 October 2025 | Viewed by 1440

Special Issue Editor

Dr. Weichao Yang

E-Mail Website
Guest Editor
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
Interests: characteristics of greenhouse gas emissions in soil; carbon and nitrogen cycling in soil; improving nitrogen use efficiency in crops; microbial biofertilizers for sustainable agriculture

Special Issue Information

Dear Colleagues,

Agricultural soil is an important source of anthropogenic greenhouse gas (GHG) emissions, and reducing farmland greenhouse gases and enhancing soil carbon sequestration are essential means of mitigating climate change. In recent decades, the overuse of chemical fertilizers has led to a significant increase in the GHG emissions produced by farmland. Fertilizer management practices are commonly suggested as techniques able to enhance the efficiency of fertilizer use and mitigate GHG emissions. Relevant practices include, but are not limited to, the following: The replacement of inorganic fertilizers with organic fertilizers or composted manure partially, thus improving soil quality and increasing crop yield while reducing the quantity of nitrogen fertilizer utilized. The application of nitrification inhibitors in order to significantly increase the efficiency of nitrogen use and reduce the emission of greenhouse gases such as N2O. The development of biofertilizers that enrich and optimize the structure of the soil microbial community, increase the content of soluble nutrients in soil, and improve soil fertility and crop yield. The application of straw-returning and no-tillage measures can increase the content of organic carbon in the soil content and improve soil productivity. In addition, the fertilization method, fertilization time, water and fertilizer integration, etc., all have an important impact on farmland GHG emissions.

In this Special Issue, we aim to collect studies conducted by researchers from all over the world in order to exchange knowledge on farmland GHG emissions under different fertilizer management practices.

Dr. Weichao Yang
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • greenhouse gases
  • N2O
  • CO2
  • manure application
  • fertilizer management
  • nitrification inhibitor
  • biofertilizer
  • organic substitution
  • green manure
  • nitrogen cycle
  • yield
  • soil organic carbon

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Published Papers (2 papers)

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Research

9 pages, 1418 KiB  
Article
Isotopic Signatures and Fluxes of N2O Emitted from Soybean Plants and Soil During the Main Growth Period of Soybeans
by Zongwei Xia, Guanxiong Chen, Kewei Yu, Hui Xu and Xiuling Yu
Agronomy 2024, 14(12), 2875; https://doi.org/10.3390/agronomy14122875 - 3 Dec 2024
Viewed by 407
Abstract
Soil microorganisms have long been recognized as primary producers of biogenic N2O in terrestrial ecosystems. Terrestrial plants can contribute to N2O emissions by transporting N2O produced in soils, and there is also evidence that plants may serve [...] Read more.
Soil microorganisms have long been recognized as primary producers of biogenic N2O in terrestrial ecosystems. Terrestrial plants can contribute to N2O emissions by transporting N2O produced in soils, and there is also evidence that plants may serve as direct producers of N2O. However, to date, direct evidence for N2O production by plants remains limited. To exclude N2O emissions resulting from soil-to-plant transport, this study conducted incubation experiments using cut soybean branches and leaves (cSBF) and intact soil cores under an N2O-free air background. The natural isotopic signatures (δ15N and δ18O) and fluxes of N2O produced by cSBF and soil were compared across different soybean growth stages over two growing seasons. The observed δ15N and δ18O values of N2O from soil ranged from −26.7‰ to −5.3‰ and −24.1‰ to 22.8‰, respectively. In contrast, the values for N2O produced from cSBF ranged from −4.7‰ to 33.1‰ and from 23.7‰ to 88.8‰, respectively. Notably, N2O emitted from plants exhibited significantly higher δ15N and δ18O values than soil-derived N2O (p < 0.05). These findings indicate that the pathways and mechanisms of N2O production and emission in soybean plants differ from those mediated by soil microorganisms and nitrogen transport processes. Additionally, a significantly higher amount of N2O emission was observed during early growth stages compared to late growth stages (p < 0.01), suggesting that plant N2O production may be associated with elevated water content and oxygen-limited conditions within plant cells. In addition to the N2O uptake by plants observed in some literature, the positive relationship between δ15N values and N2O fluxes suggests that N2O could be consumed in plant cells (p < 0.01), with a high consumption rate often associated with a high production rate. The results of this study provide compelling evidence that plants may represent an overlooked source of N2O in terrestrial ecosystems. Full article
(This article belongs to the Special Issue Effect of Fertilizer Application on Greenhouse Gas Emissions and Soil Carbon Sequestration)
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10 pages, 2767 KiB  
Article
The Impact of Applying Different Fertilizers on Greenhouse Gas Emissions and Ammonia Volatilization from Northeast Spring Corn
by Kaikuo Wu, Longfei Wang, Lei Zhang, Mei Han, Ping Gong, Yan Xue, Yuchao Song, Zhijie Wu and Lili Zhang
Agronomy 2024, 14(12), 2798; https://doi.org/10.3390/agronomy14122798 - 25 Nov 2024
Viewed by 646
Abstract
Reducing greenhouse gas (GHG) emissions and ammonia (NH3) volatilization by improving fertilization methods to increase crop yield is beneficial for the green and sustainable development of agriculture. This study evaluated the effects of farmer practice fertilization (FP), nutrient expert optimized fertilization [...] Read more.
Reducing greenhouse gas (GHG) emissions and ammonia (NH3) volatilization by improving fertilization methods to increase crop yield is beneficial for the green and sustainable development of agriculture. This study evaluated the effects of farmer practice fertilization (FP), nutrient expert optimized fertilization (NE—optimized fertilizer usage and time), the application of stable compound fertilizer (SF), and the application of controlled-release coated urea (CRU) on greenhouse gases, NH3 volatilization, and corn yield through field experiments set up in the corn planting area in western Liaoning Province. The results showed that compared with FP treatment, NE could significantly reduce NH3 volatilization by 28% and increase N2O release by 41%. Compared with FP treatment, SF could significantly reduce NH3 volatilization by 48.54%, N2O release by 38.54%, CO2 release by 13.96%, global warming potential (GWP) by 16.60%, and greenhouse gas emission intensity (GHGI) by 27.23%, and could significantly increase corn yield by 15.86%. Compared with FP treatment, CRU could significantly reduce NH3 volatilization by 63.46%, CO2 release by 11.98%, GWP by 10.73%, and GHGI by 13.77%, while increasing N2O release by 6.71%. Overall, NE, SF, and CRU treatments all showed better effects than FP treatment in increasing corn yield or reducing NH3 volatilization and GHG emissions. Among them, SF treatment demonstrated superior performance over NE and CRU treatments in terms of NH3 volatilization, corn yield, and GHGI. Therefore, the application of stable compound fertilizer is the optimal choice for corn planting in western Liaoning, with broad application prospects. Full article
(This article belongs to the Special Issue Effect of Fertilizer Application on Greenhouse Gas Emissions and Soil Carbon Sequestration)
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