The cultivation period effects on heavy metals content of some soils of Sohag governorate | ||
| Journal of Sohag Agriscience (JSAS) | ||
| Article 5, Volume 6, Issue 2 - Serial Number 11, December 2021, Pages 124-136 PDF (1.33 M) | ||
| Document Type: Research and Review Papers | ||
| DOI: 10.21608/jsasj.2021.222584 | ||
| Authors | ||
| Mohamed S Ibrahim* 1; M Hassan2; H Osman3 | ||
| 1Division of Soil and Water Sciences, Faculty of Agriculture, Sohag University | ||
| 2Geology Department Faculty of Science Sohag University Sohag Egypt 82524 | ||
| 3Soils and Water Department Faculty of Agriculture Sohag University Sohag Egypt 82524 | ||
| Abstract | ||
| The main objectives of this study are to assess the levels of some heavy metals (i.e. Mn, Cd, Zn, Co, and Cu) in some soils of Sohag governorate under different lands in the respect of cultivation period; and to quantify the metal contamination of these soils. Total number of 114 soil samples was collected from 57 different locations under various land-uses (i.e. old cultivated lands, new cultivated lands, and un-cultivated lands). Un-cultivated soils are considered as a control soil, while old cultivated soils are the oldest soils compared to new reclaimed ones in between. Soil samples were collected from two layers 0- 30 cm and 30-60 cm depth to reflect the various fertilizers application used in studied soils. The geo-coordinates of the studied sites were identified using the global Positioning System (GPS). Soil samples were prepared and analyzed for their physicochemical properties as well as for their content of DTPA-extractable heavy metals in the soil testing laboratories using the standard methods of analysis. Maps of DTPAextractable heavy metals were generated. Correlations between the concentration of the studied elements and some soil properties (i.e. primary sand, silt, clay, pH, OM, CaCO3) was developed whereas, a positive correlation was observed between clay content and heavy metal. The obtained results indicated that the highest concentrations of heavy metals were found in the old cultivated soils compared to un-cultivated soils and newly reclaimed soils. Therefore, it should be mentioned that, the cultivation period affects the levels and quantities of these heavy metals in the studied soils. This may be due to agricultural activities such as the use of chemical fertilization. | ||
| Keywords | ||
| Contamination; heavy metals; Sohag; Soil | ||
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