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Agronomy
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Effects of Brackish Irrigation on the Soil–Plant System and Safe...
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Effects of Brackish Irrigation on the Soil–Plant System and Safe Use Thresholds

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Water Use and Irrigation".

Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 1129

Special Issue Editor

Prof. Dr. Yang Gao

E-Mail Website
Guest Editor
Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
Interests: irrigation management; saline water irrigation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Background & history of this topic: With population growth and industrial development, global water resources are under severe pressure. The demand for water for agricultural use is generally difficult to meet, especially in arid and semi-arid areas. In order to meet crop water needs and maintain sustainable agricultural development, the need for the safe and sustainable development of brackish water resources is high.

Aim and scope of the special issue: Recent advances have revealed the effects of brackish irrigation on soil salt accumulation, crop growth and development, yield and its composition, and have developed irrigation scheduling for saline water or alternative saline and freshwater for different crops. While the mechanism of saline water quality on soil quality, soil organic carbon and root hydraulic properties is unclear, and the simulation of crop physiological response to brackish irrigation challenges our current understanding. This Special Issue aims to shed light on the complexity of brackish irrigation on soil quality, crop phenotype, and physiological and biochemical processes within various contexts.

Cutting-edge research: effects of saline water quality on soil structure; response of soil porosity to different levels of SAR; regulation of saline water irrigation on soil microbial community; effects of saline water irrigation on root architecture and hydraulics; responses of crop physiology and yield to saline water irrigation; effects of saline water irrigation on water productivity; planning of brackish water irrigation.

What kind of papers we are soliciting: Research and review articles as well as short communications are invited.

Prof. Dr. Yang Gao
Guest Editor

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

  • brackish irrigation
  • SAR
  • sodicity
  • soil quality
  • crop yield and quality
  • water productivity

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Published Papers (1 paper)

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Research

15 pages, 2378 KiB  
Article
Slightly Saline Water Improved Physiology, Growth, and Yield of Tomato Plants in Yellow Sand Substrate
by Wenge Jiang, Jiangfan Liu, Zhi Gong, Yang Gao, Zhaoyang Li and Zhanming Tan
Agronomy 2024, 14(10), 2315; https://doi.org/10.3390/agronomy14102315 - 9 Oct 2024
Viewed by 753
Abstract
Efficient utilization of saline water and yellow sand resources can enhance water and soil resource management while boosting crop yields in Xinjiang. This study conducted a two-season field experiment in Alar City, Xinjiang, from March to July 2023 and August 2023 to January [...] Read more.
Efficient utilization of saline water and yellow sand resources can enhance water and soil resource management while boosting crop yields in Xinjiang. This study conducted a two-season field experiment in Alar City, Xinjiang, from March to July 2023 and August 2023 to January 2024. The objective was to examine the effects of different irrigation water salinities (2, 3, 4, 5, and 6 g·L−1) on the physiology, growth, and yield of sand-cultured tomatoes grown in yellow sand slag. Groundwater irrigation with salinity levels of 0.8–1 g·L−1 was used as the control (CK). The results showed that the salinity of the substrate gradually increased with the salinity of irrigation water in each treatment. The salt accumulation increased by 59.5%, 82.5%, and 99.5% at the end of the experiment for T3 (4 g·L−1), T4 (5 g·L−1), and T5 (6 g·L−1), respectively, compared to CK. As the salinity of irrigation water increased, plant height, stem thickness, chlorophyll content, net photosynthesis rate, stomatal conductance, transpiration rate, and total yield of tomato showed an increasing and then decreasing trend, in which the total tomato yield of the T2 (3 g·L−1) treatment was significantly increased by 35.2% compared with that of CK between the two seasons. In contrast, as the salinity of irrigation water increased, the inter-cellular CO2 concentration of tomato leaves showed a decreasing and then increasing trend, with the T2 treatment having the lowest inter-cellular CO2 concentration. Pathway analysis revealed that appropriate salinity levels increased tomato yield by regulating inter-cellular CO2 concentration. Based on these findings, a 3 g·L−1 salinity level is recommended for irrigating sand-cultured tomatoes to maximize yellow sand resource use, address freshwater shortages, and optimize water and soil management in the Xinjiang region. Full article
(This article belongs to the Special Issue Effects of Brackish Irrigation on the Soil–Plant System and Safe Use Thresholds)
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