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Agronomy
Special Issues
Irrigation Schedules Based on Plants, Soil and Meteorological Indicators
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Irrigation Schedules Based on Plants, Soil and Meteorological Indicators

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

Deadline for manuscript submissions: 28 February 2025 | Viewed by 1203

Special Issue Editors

Prof. Xiaosen Wang

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Guest Editor
Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
Interests: water saving irrigation technology and engineering; crop water content diagnosing; regulate deficit irrigation
Prof. Dr. Haijun Liu

E-Mail Website1 Website2
Guest Editor
College of Water Sciences, Beijing Normal University, Beijing, China
Interests: water saving and efficient utilization of water resources in agriculture; sprinkler and surface irrigation technology; fertigation scheduling; SPAC system modeling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the world population approaching 8 billion, there is an urgent need to produce enough food to meet people’s development needs. However, the water shortages caused by the intensification of global climate change are increasingly negatively influencing the development of irrigation agriculture, as well as crop production. Advanced irrigation technology and optimal irrigation schedules could improve agricultural water use efficiency, and thus achieve sustainable development. The irrigation schedule is a key management tool for solving the problem of when to irrigate and how much irrigation to apply, which is crucial for the enhancement of WUE (water usage efficiency). Irrigation scheduling can be performed using information regarding plant, soil, and meteorological factors, such as the leaf cell turgor pressure, stem diameter, sap flow, soil water content, soil water potential, cumulative radiation, cumulative temperature, reference crop evapotranspiration (ET0), etc. Therefore, it is of great significance to launch a Special Issue on irrigation schedules based on plant, soil, and meteorological indicators to deepen readers' understanding of irrigation decision-making techniques, theories, and models, and to promote academic exchanges in the field of irrigation among experts around the world.

This Special Issue aims to collate the latest cutting-edge research and advances in irrigation schedules based on plant, soil, and meteorological indicators. Research articles, review articles, and short communications are invited.

Prof. Xiaosen Wang
Prof. Dr. Haijun Liu
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

  • irrigation schedule
  • water use efficiency
  • irrigation indicator
  • intelligent and precision irrigation
  • irrigation model
  • irrigation technology
  • crop water requirement

Published Papers (2 papers)

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Research

21 pages, 3395 KiB  
Article
Comprehensive Analysis of Groundwater Suitability for Irrigation in Rural Hyderabad, Sindh, Pakistan
by Shoukat Ali Soomro, Li Hao, Gulsher Ali Memon, Abdul Rahim Junejo, Wenquan Niu, Zahid Ali Channa, Muhammad Kareem Chandio, Jamshed Ali Channa, Jawaher Alkahtani and Jahangeer Dahri
Agronomy 2024, 14(5), 1072; https://doi.org/10.3390/agronomy14051072 - 18 May 2024
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Abstract
An irrigation quality assessment for rural Hyderabad was made by determining the pH, EC, TDS and TH beside major cations and anions. This study employed various parameters to determine the suitability of groundwater for irrigation and its hydrochemistry. Permissible limits of major cations [...] Read more.
An irrigation quality assessment for rural Hyderabad was made by determining the pH, EC, TDS and TH beside major cations and anions. This study employed various parameters to determine the suitability of groundwater for irrigation and its hydrochemistry. Permissible limits of major cations and anions revealed that approximately 26% of samples exceeded acceptable levels for Electrical Conductivity (EC), 87% for Ca2+, 89% for Mg2+, and 60% for Na+, while none exceeded the limits for K+. Conversely, 47% of samples for HCO3−, 91% for Cl−, and 100% for SO42−, NO3−, and CO32− proved suitability for irrigation. Notably, irrigation indices highlighted favorable results, with 100% conformity for SAR, SSP, RSP, and PI values, and substantial percentages of 78% and 85% for MH and KR values, respectively, affirming their suitability for irrigation practices. Employing the USSL diagram, 22%, 65%, and 11% of samples fall into the C2S1, C3S1, and C4S1 categories. According to the Wilcox diagram, 25%, 43%, 30%, and 2% are classified under C1, C2, C3, and C4 categories, respectively. The Gibbs ratio shows a concentration within the evaporation dominance, and CAI values showed positive ion exchange. Overall, Hyderabad’s rural areas are generally suitable for irrigation, apart from certain areas where water quality may not be acceptable for plants lacking high salt tolerance. Full article
(This article belongs to the Special Issue Irrigation Schedules Based on Plants, Soil and Meteorological Indicators)
17 pages, 1240 KiB  
Article
Water-Use Characteristics of Wheat–Maize Rotation System as Affected by Nitrogen Application Rate in North China Plain
by Jingtao Qin, Xichao Fan, Xiaosen Wang, Mingliang Jiang and Mouchao Lv
Agronomy 2024, 14(5), 1006; https://doi.org/10.3390/agronomy14051006 - 10 May 2024
Viewed by 613
Abstract
Reducing the nitrogen (N) application rate and improving water-use efficiency (WUE) are extremely important for sustainable agricultural development in wheat–maize rotation systems in the North China Plain (NCP). We conducted a three-year experiment to investigate the effects of the N application rate on [...] Read more.
Reducing the nitrogen (N) application rate and improving water-use efficiency (WUE) are extremely important for sustainable agricultural development in wheat–maize rotation systems in the North China Plain (NCP). We conducted a three-year experiment to investigate the effects of the N application rate on the water-use characteristics of wheat–maize rotation systems in the NCP. The experiment consisted of four N application rates: 250, 167, 84, and 0 kg hm−2, denoted by N3, N2, N1, and N0, respectively. The results showed the following: For the 0–60 cm soil layer, N deficiency could lead to reduced soil water use (SWU) in wheat seasons, but in maize seasons, N deficiency showed no significant effects on SWU in the 0–60 cm layer. For the 60–140 cm soil layer, N deficiency could lead to reduced SWU in wheat seasons, but in maize seasons, the effects of N deficiency on SWU in the 60–140 cm layer varied with the SWC in the 0–60 cm layer. Throughout the three-year experiment, the evapotranspiration (ET), leaf area index (LAI), yield, and WUE of plants receiving low N treatments decreased with the growing season due to the negative effects of low N treatment (N1 and N0) on the soil. The LAI, total ET, grain yield, and WUE were all positively correlated with each other for both wheat and maize. Considering grain yield and WUE, a single-season N application rate of 167 kg hm−2 (N2 treatment) in the NCP could meet the growth needs of the wheat–maize rotation system. Full article
(This article belongs to the Special Issue Irrigation Schedules Based on Plants, Soil and Meteorological Indicators)
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