Gendy, O.S. ; I.A. Hegab, and T. H. M. A. Dshesh( 2018). Determination of boron levels in some different egyptian soilsJ. Biol. Chem. Environ. Sci., 2018, Vol. 13( 3 ): 1-20
Abstract: The current study is mainly carried out to through light on the background levels of total and available boron contents in different types of Egyptian soils, as it is one of the essential micronutrient elements for plant grown. Thirteen soil profiles were collected from different governorates of Egypt to represent the Nile alluvial, sandy, calcareous and lacustrine soils. The obtained data showed that, the total boron content was varied from 48.1 to 71.9 μg g-1 in alluvial soils and from 14.3 to 26.7 μg g-1 in sandy soils. While in calcareous and lacustrine soils these values ranged from 25.7 to 44.1 and from 69.3 to 189.7μg g-1, respectively. The highest total contents are found in lacustrine soils, especial at El-Tina plain soils. In general, boron values can be arranged according to the Egyptian soil types in the following order: Lacustrine > Nile alluvial > calcareous > sandy soils. Available boron as hot water soluble boron values (HWB) were recorded a wide variation in their contents in different soil types. These values varied from 0.6 to 2.0; 0.9 to 1.7; 0.4 to 0.9 and from 2.9 to 7.3 μg g-1 in the Nile alluvial, sandy, calcareous and lacustrine soils, respectively. Factors affecting total and available boron in the different studied soil types, the correlation coefficients were calculated. The values reveal that the total and available boron contents are almost dependent on soil parent material and its main properties. The statistical measurements, i.e. weighted mean (W), trend (T) and specific range (R) of total boron were computed and interpreted in terms of soil genesis and formation.
Keywords: (words:HWB, Specific range, Trend, Total boron, Weighted mean .)
