HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Elseewi, A. A. Articles by Elmalky, A. E. Search for Related Content PubMed Articles by Elseewi, A. A. Articles by Elmalky, A. E. Agricola Articles by Elseewi, A. A. Articles by Elmalky, A. E.

Boron Distribution in Soils and Waters of Egypt¹

ABSTRACT

Saturation extract, hot water-soluble, acid-soluble, and total B fractions were determined in soil samples from profiles representing six geographically diverse areas in Egypt. Saturation extract and hot water-soluble B averaged 0.6 µg/ml and 1.3 µg/g. Acid-soluble and total B averaged 10.2 and 113 µg/g. The acid fraction showed a curvilinear relationship with CaCO₃ content of the soil, and averaged 12.5% of the total B. Total B, on the average, was twice as high in clay samples as in sandy samples, and decreased by about 32% beyond the 60-cm depth of the soil profile. Concentrations of saturation extract B were either similar to or a reasonable multiple of Nile-Water B, indicating that the latter is a direct source of at least water soluble B in these soils. Concentrations of water and acid-soluble B suggest that B status in soils of Egypt is above the sufficiency level, and that under proper soil and water management the incidence of toxicity is unlikely.

¹ Contribution from the Dept. Soil and Water Science, Faculty of Agriculture, Alexandria Univ., Alexandria, Egypt, and the Dept. of Soil and Environmental Sciences, Univ. of California, Riverside, CA 92521.

² Formerly Associate Professor of Soil Science and Graduate Student, respectively, Dept. of Soil and Water Science, Faculty of Agriculture, Alexandria Univ., Alexandria, Egypt. Present address of the senior author is Dept. of Soil and Environmental Sciences, Univ. of California, Riverside, CA 92521.

Received for publication March 20, 1978. Accepted for publication November 7, 1978.