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Agronomy
Special Issues
Management Practices to Prevent and Mitigate Soil Salinization in Cropland
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Management Practices to Prevent and Mitigate Soil Salinization in Cropland

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

Deadline for manuscript submissions: closed (25 June 2022) | Viewed by 2264

Special Issue Editors

Dr. Xiaohua Long

E-Mail Website
Guest Editor
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
Interests: land management; soil improvement; sustainable development; soil and global climate change; saline-sodic soil; land degradation; soil microorganisms; soil structure
Special Issues, Collections and Topics in MDPI journals
Dr. Zhaosheng Zhou

E-Mail Website
Guest Editor
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
Interests: soil improvement; sustainable development; saline-sodic soil; soil microorganisms

Special Issue Information

Dear Colleagues,

Soil is an essential resource and a vital part of the natural environment from which most of the food in the world is produced. At the same time, soil provides living space for humans as well as essential ecosystem services that are important for water regulation and supply, climate regulation, biodiversity conservation, carbon sequestration, and cultural services.

Naturally saline or sodic soils harbor valuable ecosystems, including a range of plants that are adapted to extreme conditions. However, secondary salinity and sodicity can develop or increase rapidly in response to unsustainable human activities, posing a threat to agricultural production, food security, the provision of essential ecosystem services as well as the achievement of the Sustainable Development Goals (SDGs). The salinization and sodification of soils are among the most serious global threats not only for arid and semi-arid regions but also croplands in coastal regions and, in the case of irrigation with wastewater, in any climate.

Saline soils have excessive levels of soluble salts, which can negatively impact or inhibit plant growth and be toxic to life. Sodic soils have a high amount of adsorbed sodium, which leads to the degradation of soil structure and inhibits plant growth. The question then is what we can do to address this, and the prevention and mitigation of soil salinization in cropland is one such answer.

Dr. Xiaohua Long
Dr. Zhaosheng Zhou
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

  • land management
  • soil improvement
  • sustainable development
  • saline–sodic soil
  • land degradation
  • soil structure
  • farmland construction

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Published Papers (1 paper)

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Research

19 pages, 20901 KiB  
Article
Salt Tolerance Strategies of Nitraria tangutorum Bobr. and Elaeagnus angustifolia Linn. Determine the Inoculation Effects of Microorganisms in Saline Soil Conditions
by Jing Pan, Xian Xue, Cuihua Huang, Fei Peng, Jie Liao, Shaoxiu Ma, Quangang You and Tao Wang
Agronomy 2022, 12(4), 913; https://doi.org/10.3390/agronomy12040913 - 11 Apr 2022
Cited by 8 | Viewed by 1791
Abstract
Increasing salinization threatens the normal growth of halophytes in saline habitats, especially at the seedling stage. Soil beneficial microorganisms have the potential to promote salt tolerance of halophytes, but less attention has been paid to the various responses between different halophytes with microbial [...] Read more.
Increasing salinization threatens the normal growth of halophytes in saline habitats, especially at the seedling stage. Soil beneficial microorganisms have the potential to promote salt tolerance of halophytes, but less attention has been paid to the various responses between different halophytes with microbial inoculations. Here we performed pot experiments to assess the responses of Nitraria tangutorum Bobr. and Elaeagnus angustifolia Linn. to arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) inoculation in saline soil conditions. The results showed that neither a single AMF inoculation nor a single PGPR inoculation promoted the growth of N. tangutorum. In contrast, co-inoculation not only promoted biomass accumulation but also promoted the absorption of P, K+, and Ca2+ in the roots, and the accumulation of N, Na+, K+, and Ca2+ in the leaves. Co-inoculation also increased the K+/Na+ ratio in the roots as well as the Ca2+/Na+ ratio in both roots and leaves of N. tangutorum. Na+ is an important inorganic osmolyte, essential for both efficient osmoregulation and biomass accumulation in N. tangutorum. PGPR inoculation alone could not promote the growth of E. angustifolia. AMF inoculation, solely or combined with PGPR, was beneficial to the absorption of K+ and Ca2+ in the roots, the accumulation of N and K+ in the leaves, the maintenance of the K+/Na+ ratio and Ca2+/Na+ ratio in the leaves, the selective transportation of K+ and Ca2+ from roots to leaves, and the accumulation of proline and glycine betaine in the leaves of E. angustifolia. Increased nutrient absorption, ion homeostasis, and K+ and Ca2+ selective transportation in AMF-inoculated E. angustifolia helped reduce the toxic effects of Na+ and the damage caused by osmotic stress in saline soil conditions. “Plant-microbe specificity” leads to the different responses of N. tangutorum and E. angustifolia seedlings to AMF and PGPR inoculation in saline soil conditions. The different salt tolerance strategies for osmoregulation, nutrient acquisition, ion homeostasis, and ion transportation determine the differential responses in N. tangutorum and E.angustifolia to AMF and PGPR inoculations under saline soil conditions. Full article
(This article belongs to the Special Issue Management Practices to Prevent and Mitigate Soil Salinization in Cropland)
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