Salinity Impact on Crop Production and Soil Management
Summary
Salinisation of agricultural soils is a pervasive challenge that undermines crop yield, water quality and ecosystem health worldwide. Accumulation of soluble salts arises from natural processes, such as marine aerosol deposition, and from anthropogenic pressures including irrigation with saline water, inadequate drainage and overuse of fertilisers. Elevated soil salinity impedes plant water uptake through osmotic stress, disrupts nutrient balance and induces ion toxicity that damages cellular structures. The resulting decline in physiological functions—photosynthesis, enzyme activity and membrane integrity—translates into stunted growth, lower biomass and significant yield losses. Integrated soil management strategies combine physical, chemical and biological approaches: optimised irrigation scheduling and artificial drainage mitigate salt buildup; soil amendments and organic residues improve structure, porosity and microbial dynamics; and cultivation of halophytes or salt-tolerant cultivars offers productive use of marginal lands. Advances in remote sensing and sensor networks enable precise mapping of salinity zones and real-time monitoring, guiding site-specific interventions. Ongoing research prioritises sustainable reclamation methods, breeding for enhanced tolerance and circular bioeconomy solutions to safeguard food production under intensifying water scarcity and climate variability.
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Salinity Impact on Crop Production and Soil Management publication trend
The graph below shows the total number of articles in salinity impact on crop production and soil management across all publications each year (not limited to Nature Index journals).
Technical terms
soil salinisation: accumulation of soluble salts, especially sodium and chloride ions, in the root zone that impedes water uptake by crops.
sodicity: build-up of exchangeable sodium in soil, leading to poor structure, reduced permeability and dispersion of clay particles.
halophyte: a plant species adapted to grow and reproduce in environments with high salt concentrations.
soil amendment: any material, organic or inorganic, applied to soil to improve its physical properties, nutrient status or biological activity.
osmotic stress: water-deficit condition in plant roots caused when external salt concentration exceeds that inside cells, hindering water absorption.
References
- A Review of Soil-Improving Cropping Systems for Soil Salinization. Agronomy (2019).
- Irrigation Induced Salinity and Sodicity Hazards on Soil and Groundwater: An Overview of Its Causes, Impacts and Mitigation Strategies. Agriculture (2021).
- Fertilisation with compost mitigates salt stress in tomato by affecting plant metabolomics and nutritional profiles. Chemical and Biological Technologies in Agriculture (2022).
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