PEDOCHEMICAL STUDIES ON SOME VALlES OF THE EASTERN COAST OF A.R.E

Abstract

The studied wadis is a part of eastern desert .The first wadi namely Hawdayn.!t is located on the south east of the eastern desert between longitude 35° 22•and 35° 3T east, and latitude 23° oo•and 23° os• north, to get more soil information on such are.a ,7 soil profiles were selected from the prevalent five geomorphic units, namely: l-out wash plain 2-wadi Plains 3-channel stream bed 4-littoral zone 5- Alluvial fans.The second wadi namely Qena .It is located between longitude 32° 32" and 33° s• cast, and latitude 26° 45" and 26° 45" , to get more soil information on such area,10 soil profiles were selected from the prevalent four geomorphic units, namely: !-mouth hills 2-wadi plains 3-terraces 4-fluviatile hummocks soil profiles of two wadis were morphologically described . 1 )Physical and chemical properties: A)Wadi Hawdayn: a)Soil texture is generally sandy to loam and vanes to some extent, from one geomorphic unit to another ,being sandy loam for soils of out wash plain ,sandy for soi Is of wadi plains, sandy to loamy sand for soils of channel stream bed ,loamy sand, sandy loam ,and clay for soils of littoral zone ,while being sandy ,sandy loam ,loamy sand, sandy clay, and loamy for soils of Alluvial fans. b)Soils salinity differs appreciably from one locality to another.