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Agronomy
Special Issues
Nutrient Cycling and Environmental Effects on Farmland Ecosystems
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Nutrient Cycling and Environmental Effects on Farmland Ecosystems

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Agroecology Innovation: Achieving System Resilience".

Deadline for manuscript submissions: 31 October 2024 | Viewed by 1544

Special Issue Editors

Prof. Dr. Wenxu Dong

E-Mail Website
Guest Editor
Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Soil Ecology, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 286 Huaizhong Road, Shijiazhuang 050021, China
Interests: conservation tillage; greenhouse gas emissions; ammonia volatilization; carbon sequestration; nitrogen cycle
Dr. Anna Walkiewicz

E-Mail Website
Guest Editor
Department of Natural Environment Biogeochemistry, Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
Interests: gas exchange in soil; emission and absorption of greenhouse gases (CO2, CH4, N2O); biological activity of soil
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nutrient cycling in farmland is a vital safeguard for soil vitality and agricultural production, as well as a key factor in ecosystem balance. Over the years, agricultural practices have often focused on maximizing yields without considering the potential environmental consequences. As a result, the excessive use of fertilizers, improper waste management, and reduced nutrient recycling have led to nutrient imbalances, water pollution, greenhouse gas emissions, and biodiversity loss. Understanding the intricate interplay between nutrient cycling and environmental effects is crucial for addressing these challenges and promoting environmentally friendly agricultural systems. Innovative research that explores the complex interactions between nutrient cycles, soil health, water quality, greenhouse gas emissions, and biodiversity conservation will form the core of this Special Issue.

This Special Issue aims to explore the mechanisms and processes of nutrient cycling in farmland ecosystems, and identify innovative approaches that promote sustainable nutrient management while minimizing negative environmental consequences. This Special Issue solicits original research articles, reviews, case studies, theoretical discussions, and policy papers addressing sustainable nutrient management in agriculture.

Prof. Dr. Wenxu Dong
Dr. Anna Walkiewicz
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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

  • nutrient cycling
  • farmland ecosystems
  • soil health
  • NH3 emission
  • greenhouse gases emission
  • nitrite leaching
  • water pollution

Published Papers (2 papers)

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Research

13 pages, 2432 KiB  
Article
The Biogas Production Potential and Community Structure Characteristics of the Co-Digestion of Dairy Manure and Tomato Residues
by Yanqin Wang, Yan Li, Li Yao, Longyun Fu and Zhaodong Liu
Agronomy 2024, 14(5), 881; https://doi.org/10.3390/agronomy14050881 - 23 Apr 2024
Viewed by 292
Abstract
Anaerobic digestion is an important means to turn agricultural waste into resources and an important way to address the challenges in treating vegetable residues in China. In this study, the co-digestion of dairy manure with tomato residue was investigated to clarify the effect [...] Read more.
Anaerobic digestion is an important means to turn agricultural waste into resources and an important way to address the challenges in treating vegetable residues in China. In this study, the co-digestion of dairy manure with tomato residue was investigated to clarify the effect of the total solids (TS) of the digestion substrate on methane’s production and mechanism using the self-made anaerobic digestion device. The results showed that all treatments could rapidly ferment methane and that the daily methane production showed a trend of increasing first and then decreasing. The optimal concentrations of the digestion substrate for liquid anaerobic digestion (L-AD), hemi-solid-state anaerobic digestion (HSS-AD), and solid-state anaerobic digestion (SS-AD) were 10%, 18%, and 25%, respectively. Compared with SS-AD and HSS-AD, L-AD gas production peaked 3–6 days earlier. Treatment TS25 had the best cumulative methane production, reaching 117.4 mL/g VS. However, treatment TS6 had acid accumulation and a very unstable system. The cumulative methane production of SS-AD was higher than that of HSS-AD and L-AD. Firmicutes and Bacteroidetes were the dominant flora, and Methanoculleus, Methanosarcina, and Methanobrevibacter were the main archaeal groups. The TS significantly changed the microbial community composition of the digestion system, especially the low TS treatment. The results presented herein indicated that TS significantly changed the bacterial and archaeal community composition of the digestion system, and thus with the increase in TS from 6% to 25%, the methane yield increased. Full article
(This article belongs to the Special Issue Nutrient Cycling and Environmental Effects on Farmland Ecosystems)
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14 pages, 4018 KiB  
Article
Layered-Strip Fertilization Improves Nitrogen Use Efficiency by Enhancing Absorption and Suppressing Loss of Urea Nitrogen
by Hongliang Wu, Luming Wang, Xiuping Liu, Qiang Li, Changai Lu and Wenxu Dong
Agronomy 2023, 13(9), 2428; https://doi.org/10.3390/agronomy13092428 - 20 Sep 2023
Viewed by 864
Abstract
Appropriate deep application of fertilizer is the key basis for improving nitrogen use efficiency (NUE). However, the effects of different deep application methods and fertilizer types on nutrient migration, NUE and biomass in wheat season are unclear. Therefore, in this study, a barrel [...] Read more.
Appropriate deep application of fertilizer is the key basis for improving nitrogen use efficiency (NUE). However, the effects of different deep application methods and fertilizer types on nutrient migration, NUE and biomass in wheat season are unclear. Therefore, in this study, a barrel planting test with multilayer fertilization (15N labeled urea (U) and coated urea (CU)) was conducted in a long-term positioning trial of winter wheat in the North China Plain (NCP). We quantified the migration of fertilizer N (Ndff) in soil–plant–atmosphere and its effects on wheat biomass and NUE based on surface (Usur, CUsur), layered-strip (Ustr, CUstr) and layered-mix fertilization (Umix, CUmix) of U and CU. Compared with surface fertilization, the concentration of mineral N in root zone (0–40 cm) was increased by Ustr and Umix (8.6–50.3%), and the concentration of ammonium N was decreased by CUstr and CUmix (49.6–76.0%), but there was no change in the nitrate N. The biomass and total N absorption of wheat tissues (straw and root) were increased by 12.3–38.9% under Ustr and CUstr. Meanwhile, the distribution of Ndff in the 0–10 cm soil was decreased under Ustr and CUstr, but it was increased in the 10–30 cm soil, thereby promoting the absorption of Ndff in wheat tissues by 12.3–28.7%. The rates of absorption and loss of Ndff were the highest (57.6–58.5%) and the lowest (4.5%) under Ustr and CUstr, respectively, compared with other treatments. Consequently, layered-strip fertilization optimized the migration and utilization of Ndff within the soil–plant–atmosphere system. This approach equalized distribution, enhanced absorption and minimized losses of Ndff, resulting in an increase in NUE by 9.6–16.7%. Under the same treatment, CU was more suitable for crop nutrient requirements than U, which was more conducive to the improvement of NUE. Our findings will provide a scientific basis for the precise directional fertilization of winter wheat in the NCP. Full article
(This article belongs to the Special Issue Nutrient Cycling and Environmental Effects on Farmland Ecosystems)
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