Does the high potassium content in recycled winery wastewater used for irrigation pose risks to soil structural stability?

Agricultural Water Management(2021)

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•Long term build-up of exchangeable K+ occurred in soils receiving treated winery wastewater.•Elevated turbidity in subsoil suspensions indicated dispersion could be an issue.•Leaching experiments showed a reduction of hydraulic conductivity occurred when salinity was lowered.•Calcium addition was shown to flocculate soils and should be considered as an amendment.
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Key words
Soil dispersion sodicity,Winery wastewater irrigation,Recycled water,Gypsum
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