الفهرس 
Introduction
Soil pHOnly 14 pages are availabe for public view
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Abstract
The present study aims to assess both total and available boron in Dakahlia governorate soils. This study was carried out on 46 soil samples represent all Dakahlia districts. The collected soil samples constitute the following soil textures: Clay, Silty clay, Clay loam, Silty clay loam, Silty, Sandy loam and, Sandy The obtained results can be summarized as follow: <U+2022> There were significant correlations between some physical and chemical soil properties and both total and available boron. <U+2022> Repeating wetting and drying increased boron retention by the soil. from the previous results it could be concluded that: <U+2022> Physical properties and chemical constituents of soil affect the degree of boron availability. <U+2022> Fine texture soil more able to sustain supply of boron for plant for long term. In contrast sandy soil losses most of its boron content rapidly. There fore sandy soil are more susceptible to boron deficiency as compared to clay soil. Since, most of Dakahlia soils are of clay type, so boron deficiency is rarely found. <U+2022> Moreover, it was found that the available B concentration ranged between 0.27 <U+2013> 2.92 ppm. It was reported that most of plants need available boron at concentration 0.5 <U+2013> 3.5 ppm. So, B deficiency, in Dakahlia soil was rare (only in sandy soils). There for fortification for sandy soil by boron is recommended.