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Agronomy
Special Issues
Organic Matter of Arable and Anthropogenically Disturbed Soils
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Organic Matter of Arable and Anthropogenically Disturbed Soils

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Soil and Plant Nutrition".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 3928

Special Issue Editors

Dr. Evgeny Lodygin

E-Mail Website
Guest Editor
Federal Research Centre “Komi Science Centre of the Ural Branch of the Russian Academy of Sciences”, Syktyvkar, Russia
Interests: soil organic matter; humic acids; sorption; heavy metals; peatland
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Evgeny Abakumov

E-Mail Website
Guest Editor
Department of Applied Ecology, Saint Petersburg State University, 199178 Saint Petersburg, Russia
Interests: humic acids; humic substances; natural organic matter; soil organic matter stabilization; polar environments; ecosystem services; environmental management; soil science; soil ecology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Anthropogenic impact is manifested mainly when soils are used in agriculture during long-term cultivation of crops, as well as under the influence of livestock grazing and technogenic pollution around industrial and mining enterprises. The condition of the lands used in agriculture, primarily arable land, and their productivity largely depends on the operating conditions and the level of farming culture. Ignoring a science-based farming system leads primarily to the degradation of soil organic matter (SOM). SOM is considered an integral component of soils, and performs a multitude of crucial functions in the environment. SOM is a regulator of the most important physicochemical and biological properties of the soil, which determine favorable water–air and nutrient regimes for plants.

This Special Issue will focus on "Organic Matter of Arable and Anthropogenically Disturbed Soils". We welcome novel research, reviews, and opinion pieces covering all related topics, including:

  1. The role of soil organic matter in the functioning of anthropogenic and arable systems.
  2. The role of soil organic matter in the functioning of anthropogenic and arable systems.
  3. Ecosystem functions of humic substances and soil organic matter.
  4. Dynamics of humic substances and soil organic matter in the process of anthropogenic evolution of the environment.
  5. Interaction of humic substances with the organic and mineral components of soils.
  6. Humic preparations in agriculture.

Dr. Evgeny Lodygin
Prof. Dr. Evgeny Abakumov
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

  • soil organic matter
  • humic substances
  • anthropogenic impact
  • environment
  • organic/inorganic nutrients
  • humic products
  • fertilizers
  • soil quality

Published Papers (3 papers)

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Research

15 pages, 2820 KiB  
Article
The Taxonomic Composition Changes of Bacteria and Fungi in Plant Residue Composts Induced by Biochar and Calcium Carbonate Application
by Nataliya Orlova, Vlada Shakhnazarova, Elena Orlova, Nikolai Bityutskii, Kseniia Smirnova, Shaohui Xu, Arina Kichko and Tatiana Aksenova
Agronomy 2023, 13(10), 2521; https://doi.org/10.3390/agronomy13102521 - 29 Sep 2023
Viewed by 828
Abstract
Plant residues are the main source of humus and some nutrients in soils. The composting of organic waste using modifiers is a promising way to obtain high-quality organic fertilizers. Here, the effect of biochar and calcium carbonate on the abundance and taxonomic composition [...] Read more.
Plant residues are the main source of humus and some nutrients in soils. The composting of organic waste using modifiers is a promising way to obtain high-quality organic fertilizers. Here, the effect of biochar and calcium carbonate on the abundance and taxonomic composition of bacteria and fungi in mature plant compost has been studied using metagenomic analysis. Plant materials with different initial C:N ratios—low (22, clover), medium (38, rye) and high (68, oats)—served as composting materials in the pot experiment. The plant material mixed with sterile sand was modified by the addition of biochar or calcium carbonate. Both ameliorants increased pH values and humic acid content in composts irrespective of plant material composition. Representatives of the phyla Proteobacteria, Actinobacteriota and Firmicutes dominated among bacteria and representatives of the division Ascomycota dominated among fungi in the mature composts, as in the initial plant samples. The abundances of bacteria and fungi in the cereal composts were higher than in the composts with clover. The effect of biochar and calcium carbonate on the number and taxonomic composition of bacteria and fungi in composts from the same plant material was similar, while the effect of reagents in composts from different raw materials was ambiguous. No one dominant group of bacteria was found to develop in response to biochar or calcium carbonate application in any of the types of composts studied. However, the structure of the fungal community both at the phylum and genus levels changed significantly under the influence of these additives. The addition of calcium carbonate and biochar led to an increase in the abundance of the same groups of fungi, but this increase was different for composts made from different plant materials. Full article
(This article belongs to the Special Issue Organic Matter of Arable and Anthropogenically Disturbed Soils)
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11 pages, 1511 KiB  
Article
Changes in Molecular Structure of Humic Substances in Cambisols under Agricultural Use
by Oksana Vishnyakova and Leonid Ubugunov
Agronomy 2023, 13(9), 2299; https://doi.org/10.3390/agronomy13092299 - 31 Aug 2023
Cited by 3 | Viewed by 884
Abstract
Soil organic matter stability and transformation affected by agriculture is a global problem of great concern. This study aimed to reveal structural changes in humic molecules under conventional soil tillage in Cambisols of the Transbaikal area. Humic acids were isolated from the humus [...] Read more.
Soil organic matter stability and transformation affected by agriculture is a global problem of great concern. This study aimed to reveal structural changes in humic molecules under conventional soil tillage in Cambisols of the Transbaikal area. Humic acids were isolated from the humus horizons of native and arable variants of Eutric Cambisol Cryic (gleyic, humic, loamic) from the forest steppe, and Haplic Cambisol (arenic, humic, protocalcic) from the steppe zone. The changes in the humic substances’ quality were evaluated by means of an elemental analysis and 13C nuclear magnetic resonance spectroscopy. The results indicate that different agronomic management affected the changes in the composition and molecular structure of humic acids. Soil tillage induced an increase in the carbon content, the proportion of aromatic compounds and carboxyl groups and the depletion in nitrogen. As measured by 13C NMR spectroscopy, the intensity of these changes was determined by soil properties and the hydrothermal regime. Organic matter from Eutric Cambisol Cryic was suggested as providing significant environmental resistance to the agricultural impact due to the optimization of the water regime and a loamy texture. Prolonged ploughing of sandy Haplic Cambisol under the arid conditions promoted deep changes in the humic substances’ composition and chemical structure. Full article
(This article belongs to the Special Issue Organic Matter of Arable and Anthropogenically Disturbed Soils)
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16 pages, 4707 KiB  
Article
Estimation of Carbon Stocks and Stabilization Rates of Organic Matter in Soils of the «Ladoga» Carbon Monitoring Site
by Vyacheslav Polyakov, Evgeny Abakumov, Timur Nizamutdinov, Evgeny Shevchenko and Maria Makarova
Agronomy 2023, 13(3), 807; https://doi.org/10.3390/agronomy13030807 - 10 Mar 2023
Cited by 5 | Viewed by 1680
Abstract
The establishment of a network of monitoring sites (term in Russian—«carbon polygons») for monitoring climatic processes as well as the emission and deposition of carbon compounds in various ecosystems is one of the priority tasks in the field of climate and biosphere conservation [...] Read more.
The establishment of a network of monitoring sites (term in Russian—«carbon polygons») for monitoring climatic processes as well as the emission and deposition of carbon compounds in various ecosystems is one of the priority tasks in the field of climate and biosphere conservation in the world. This paper presents the results of the study of the soil sections of the «Ladoga» carbon monitoring site. Folic Podzol (Arenic) and Fibric Histosol were considered. These soils are widely represented in the southern taiga subzone and can be used as benchmark monitoring soil sections. As a result of the analysis of chemical parameters, it was revealed that Fibric Histosol and Folic Podzol (Arenic) are characterized by an acidic reaction of pH, pronounced podsolization, and peat accumulation. Fibric Histosol stores a significant amount of soil organic matter (SOM) up to 42.95 kgC/m2. In the analysis of the molecular composition of humic acids (HAs) extracted from the studied soils, it was found that HAs from Fibric Histosol were characterized by a relatively high content of aromatic structural fragments (27–41%), while in Folic Podzol (Arenic), aliphatic structural fragments prevailed (up to 70%). The increase of aromatic structural fragments in the HAs composition indicates the stabilization and conservation of SOM. The creation of a monitoring network will make it possible to identify the main trends of SOM accumulation, determine the conditions under which accumulation occurs, and calculate its contribution to climate change on the planet. Full article
(This article belongs to the Special Issue Organic Matter of Arable and Anthropogenically Disturbed Soils)
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