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- Title
Water Quality and Toxic Element Effects on Isohumic Soil Properties and Crops in Semi-arid Regions.
- Authors
Azouzi, Rim; Charef, Abdelkrim; Ayed, Lamia
- Abstract
Treated wastewater (TWW) and freshwater used separately or within the same agricultural soil is a key element in soil parameter evolution, soil-plant pollution and crop yields. The long-term application of TWW increased CaCO, P, N, K, TOC, metal contents, pH and salinity in isohumic soil in semi-arid and arid climates. Also, it was found that using freshwater after TWW within the same land leached soil compounds and pollutants. Consequently, a clear decline of salinity, pH, macronutrient and pollutant concentrations occured. Therefore, the economic profitability in topsoil decreased. TWW contributed to crop production increase, despite high fertilizer and metal concentrations in TWW and soil. Also, no toxic metal trace was detected in cultivated plants despite soil pollution. Occasional rainwater removed the stable part of fertilizers in topsoil and slightly improved plant development.
- Subjects
EFFECT of pollution on plants; SOIL pollution; WATER quality; CROP yields; METAL content of soils; ARID regions
- Publication
Bulletin of Environmental Contamination & Toxicology, 2015, Vol 94, Issue 6, p764
- ISSN
0007-4861
- Publication type
Article
- DOI
10.1007/s00128-015-1487-7