Efficient Water and Nutrient Utilization of Crops Under Changed Environment

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

Deadline for manuscript submissions: 30 September 2026 | Viewed by 726

Special Issue Editor

Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling, China
Interests: biological water-saving; water use efficiency; water and nutrient management; fruit quality; climate change
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Special Issue Information

Dear Colleagues,

In recent years, various environmental challenges have emerged following the intensification of anthropogenic activities, such as global warming, a shortage of fresh water resources and the degradation of arable soils. These issues significantly affect the productivity of crops, quality and the safety of food. Researchers have therefore endeavored to understand the responses of crop water and nutrient acquisition to the changed environment at varied scales. However, efficiently enhancing the water and nutrient use of crops in the soil–crop–atmosphere continuum, when influenced by abiotic variables, remains challenging; in particular, the interactions between genotypes, the environment and management need to be further explored.

This Special Issue aims to gather innovative studies on the efficient utilization of water and/or nutrients by crops under changing environments (drought, heat and CO2 elevation) and the application  of various agricultural management techniques (deficit irrigation, fertigation, soil amendment, etc.). We welcome the submission of original research, meta-analyses and reviews/mini-reviews related to this topic; this will provide valuable acknowledge related to the management and response of crop plants to environmental factors in order to achieve sustainable soil health and crop production in future climate change scenarios.

Dr. Zhenhua Wei
Guest Editor

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Keywords

  • crop physiology
  • water use
  • nutrient uptake
  • soil health
  • environmental change

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Published Papers (1 paper)

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Research

16 pages, 3960 KB  
Article
Doubling CO2 Modulates Root Morphology to Enhance Maize Elemental Stoichiometry and Water Use Efficiency Under Soil Drought and Salinity
by Changtong Xu, Haoran Tong, Zesen Gao, Wentong Zhao, Chunshuo Liu, Manyi Zhang and Zhenhua Wei
Agronomy 2026, 16(3), 326; https://doi.org/10.3390/agronomy16030326 - 28 Jan 2026
Viewed by 290
Abstract
This study aimed to explore the effect of doubled CO2 concentration (d[CO2]) on the modulation of root morphological structure, leaf potassium (K)/sodium (Na) ratio, and nutrient stoichiometry, as well as water use efficiency (WUE) of a C4 [...] Read more.
This study aimed to explore the effect of doubled CO2 concentration (d[CO2]) on the modulation of root morphological structure, leaf potassium (K)/sodium (Na) ratio, and nutrient stoichiometry, as well as water use efficiency (WUE) of a C4 maize (Zea mays L.) in response to soil drought and salinity. C4 maize was grown in two atmospheric CO2 concentrations of 400 and 800 ppm (a[CO2] and d[CO2]), subjected to two soil water regimes (well-watered and drought stress) and two soil salinity levels (0 and 100 mM NaCl pot−1 (non-salt and salt stress)). The results indicated that soil drought increased maize root tissue density and specific root length. Both d[CO2] and salt stress reduced leaf phosphorus (P) and K concentrations; conversely, drought stress enhanced leaf nitrogen (N) and K concentrations. The lower specific leaf area, but greater specific leaf N and N/K under soil drought, was amplified by salt stress. In contrast, d[CO2] promoted leaf carbon (C)/N and C/K. Notably, d[CO2] combined with soil drought enhanced leaf K/Na under salt stress. Moreover, d[CO2] ameliorated the adverse impacts of soil drought and salinity on root morphology in terms of enlarged root length and root surface area, contributing to superior leaf C, N, and K use efficiency and consequently improved C4 maize plant dry mass and WUE. These findings would provide essential knowledge to elevate salt tolerance and achieve optimal nutrient homeostasis and WUE in C4 maize, adapting to future drier and more saline soils under a CO2-enriched scenario. Full article
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