Summary
This systematic review synthesises evidence on electrochemical transformations of soil nutrients under different moisture regimes, with emphasis on how soil redox and water status affect geochemical speciation and the distinction between potentially and readily available nutrient pools. The authors examine mechanisms linking soil moisture, redox conditions, and nutrient bioavailability—outcomes of particular relevance to rainfed and irrigated farming systems where water variability influences soil chemistry and crop nutrition. The review as suggested by its scope contributes to understanding how soil water management strategies might be optimised to enhance nutrient availability for crop uptake.
UK applicability
The findings on soil moisture effects on nutrient availability are applicable to UK temperate systems, particularly regarding seasonal waterlogging impacts on nutrient speciation in clay and poorly drained soils. However, the review's emphasis on electrochemical transformations under distinct moisture regimes may be most directly relevant to marginal UK conditions (wet winters, dry summers) and could inform nutrient management strategies in variable precipitation scenarios.
Key measures
Redox potential (Eh), pH, soil moisture regimes, electrochemical transformations of nutrients, potentially available nutrients (extractable pools), readily available nutrients (plant-accessible pools), nutrient speciation
Outcomes reported
This systematic review synthesised evidence on how soil moisture regimes affect electrochemical transformations and the geochemical speciation of potentially and readily available soil nutrients. The review examined relationships between soil redox conditions, nutrient solubility, and bioavailability across diverse soil types and agricultural contexts.
Topic tags
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