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The aim is to assess how soil type, nitrate application, and mulching affect water retention and salinity in arid soils.

June 28, 2026SustainabilityOpen Access

Integrated Water–Soil–Nitrate Management Under Arid Conditions Using Mulching: A Composite Sustainability Index Approach

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Randomized trial evaluates soil and water management strategies in arid conditions, suggesting improved agricultural sustainability.

The aim is to assess how soil type, nitrate application, and mulching affect water retention and salinity in arid soils.
Controlled greenhouse conditions with loamy sand and sandy clay loam soils.
Application of sawdust mulching and varying nitrate-nitrogen levels.
Development of a Composite Sustainability Index to evaluate performance.
Sandy clay loam showed higher water retention and lower drainage compared to loamy sand.
4 cm sawdust mulch significantly enhanced water conservation and reduced evaporation.
The Composite Sustainability Index highlighted the 4 cm mulch treatment as the most effective for sustainability.

Alharbi et al. (2026) studied this question.

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