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Agriculture
Special Issues
Innovative Approaches for Sustainable Management of Agricultural Water Resources
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Innovative Approaches for Sustainable Management of Agricultural Water Resources

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Agricultural Water Management".

Deadline for manuscript submissions: closed (5 September 2023) | Viewed by 2765

Special Issue Editors

Dr. Sayed Hossein Sadeghi

E-Mail Website
Guest Editor
Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164, USA
Interests: irrigation; hydraulics; hydrology; evapotranspiration; soil physics
Prof. Dr. Pete Jacoby

E-Mail Website
Guest Editor
Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164, USA
Interests: drip irrigation; ecology; viticulture; agronomy; watershed hydrology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The World is facing an enormous challenge to double food production by 2050. Irrigated areas will consequently need to increase in forthcoming years, while fresh water supplies will be diverted from agriculture to meet the increasing demand of domestic use and industry. Considering the low efficiency of the existing irrigation systems, future agricultural water management strategies should ensure that water resources are allocated efficiently and equitably, and used to achieve socially, environmentally and economically beneficial outcomes.

This Special Issue focuses on the development and assessment of innovative approaches for Sustainable Management of Agricultural Water Resources. Research articles will cover a broad range of topics including (but are not limited to) farm-level and regional water management, crop water relations, crop yields and water productivity, Irrigation, drainage, and salinity in cultivated areas, salinity management and strategies for improving the use of saline water in agriculture, rainwater harvesting and crop water management in rainfed areas, use of wastewater and other low quality waters in agriculture, groundwater management in agriculture and conjunctive use of groundwater and surface water, implications of groundwater and surface water management on nutrient cycling and; exploitation and protection of agricultural water resources.

Dr. Sayed Hossein Sadeghi
Prof. Dr. Pete Jacoby
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. Agriculture 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

  • irrigation
  • water use efficiency
  • evapotranspiration
  • crop production
  • innovation

Published Papers (2 papers)

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Research

17 pages, 3017 KiB  
Article
Effects of Oxygenated Brackish Water on Pakchoi (Brassica chinensis L.) Growth Characteristics Based on a Logistic Crop Growth Model
by Yuyang Shan, Yan Sun, Wanghai Tao and Lijun Su
Agriculture 2023, 13(7), 1345; https://doi.org/10.3390/agriculture13071345 - 3 Jul 2023
Viewed by 967
Abstract
Oxygenated irrigation can improve soil physical and chemical properties and increase vegetable yields. It provides an effective method for safe and efficient utilization of brackish water, but its growth-promoting pathway is unclear. We investigated the effects of brackish water culture at five dissolved [...] Read more.
Oxygenated irrigation can improve soil physical and chemical properties and increase vegetable yields. It provides an effective method for safe and efficient utilization of brackish water, but its growth-promoting pathway is unclear. We investigated the effects of brackish water culture at five dissolved oxygen concentrations (9.5 (CK), 12.5, 15.5, 18.5, and 22.5 mg/L) on pakchoi (Brassica chinensis L.) growth characteristics by hydroponics experiment, and the logistic model to fit and analyze pakchoi growth characteristics. At a brackish water dissolved oxygen concentration of 18.5 mg/L, nitrogen mass fraction was significantly higher than in a control treatment by 43.4%, and pakchoi effective accumulated temperature increment during vigorous plant height and root length growth was significantly lower than other treatments. The logistic model effectively simulated pakchoi plant height and root length growth, and both theoretical maximum plant height and root length reached their maximum values at 18.5 mg/L dissolved oxygen concentration. Path analysis showed that the maximum net photosynthetic rate and nitrogen mass fraction were the main factors affecting aboveground pakchoi fresh weight. In conclusion, a dissolved oxygen concentration of 18.5 mg/L in brackish water is more appropriate for pakchoi to achieve high yield under brackish water hydroponics conditions. Our results provide guidance for the safe and efficient utilization of brackish water in green and efficient vegetable production. Full article
(This article belongs to the Special Issue Innovative Approaches for Sustainable Management of Agricultural Water Resources)
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17 pages, 3671 KiB  
Article
Mechanism Analysis of the Influence of Structural Parameters on the Hydraulic Performance of the Novel Y-Shaped Emitter
by Chaoxi Li, Zhiqin Li, Peisen Du, Juanjuan Ma and Simin Li
Agriculture 2023, 13(6), 1160; https://doi.org/10.3390/agriculture13061160 - 30 May 2023
Cited by 1 | Viewed by 1004
Abstract
As a key component of a drip irrigation system, the performance of drip irrigation emitters is determined by the flow channel structures and parameters. In this paper, a novel Y-shaped labyrinth-channel emitter was proposed, and the influence of the hydraulic performance was researched [...] Read more.
As a key component of a drip irrigation system, the performance of drip irrigation emitters is determined by the flow channel structures and parameters. In this paper, a novel Y-shaped labyrinth-channel emitter was proposed, and the influence of the hydraulic performance was researched under different waist-arc angles (α) and ratios of crown height to chord length (a:b). The flow characteristics and energy dissipation mechanisms of water in the emitter were analyzed by using fluid dynamics software. The analysis showed that, keeping the ratio of crown height to chord length unchanged and with an increase in the waist-arc angle from 90° to 180°, the pressure-drop ratio before and after the water flow through the vortex area increased, and the hydraulic performance of the emitter was improved, specifically: the design flow could be reduced by 6.02–26.7%, and the slope of the curve could be reduced by 9.83–28.1%. The smaller the ratio of crown height to chord length, the weaker the influence of waist-arc angle was on the design flow and hydraulic performance. Keeping the waist-arc angle unchanged, there was a decrease in the ratio of crown height to chord length from 6:30 to 1:30, the vortex strength inside the emitter channel increased, and the hydraulic performance was improved: the design flow could be reduced by 7.56–23.5%, and the slope of the curve could be reduced by 5.43–20.5%. The bigger the waist-arc angle, the weaker the influence of the ratio of crown height to chord length was on the design flow and the hydraulic performance, even to the point of having no effect. When the Y-shaped emitter was close to the pressure-flow curve slope of the commonly-used triangular-channel emitter, the hydraulic performance of the two was similar, and the former could increase the channel width by 25%, as compared to the latter, or shorten the channel length by 44.3%. The results showed that the Y-shaped emitter had better hydraulic performance compared with the triangular-flow-channel emitter commonly used today. Therefore, the Y-shaped emitter has broad application prospects in water-saving irrigation. Full article
(This article belongs to the Special Issue Innovative Approaches for Sustainable Management of Agricultural Water Resources)
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