LAND SUITABILITY ASSESSMENT OF SOME SOILS AT WADI SOBA (KHARTOUM STATE)

Abstract

This study was conducted in wadi soba which is located in sharg El nail locality (Khartoum State) South East of Khartoum North with an area of 200 feddan. The study area is part of the upper third terrace with nearly flat surface. The climate is semi-desert dominated by hot weather, few summer rain and cool winters. Semi-desert shrubs and grasses are noticed throughout the area. This study aimed to identify soil suitability of Wadi Soba. A semi detailed Soil survey procedure was followed in the study area with intensity of one observation per20 feddan.13 Soil observations (10 augers + 3 profiles) were done in the study area. The surface feature and morphological description of the profile were done according to FAO methodology, 44 soil samples were collected for physical properties (mechanical analysis) and chemical properties (Ec, pH and SAR). Based on surface feature, and analytical result three soil maps were identified; Flat clay plain with sand sheet (A), Alluvium deposit with removable sand Sheet (B)and Flat plain with sand sheet(C). The results indicated the soil were developed on reworked very old alluvium and local residuum materials. According to USA soil taxonomy the soils were classified as to Typic Haplocambids, The all soil are deep, non saline, non sodic. The texture is sandy clay loam to clay loam and medium structural the area is generally a flat plain. The soil developed from Aeolian reworked .According to land suitability classification the study area is classified as S2mf, S3efm with erosion, moisture and fertility limitations. This study was recommended to add organic matter to enhance soil fertility and control wind hazard by Shelter belts of parallel lines of trees and bushes planted at short .Distances across the wind direction inside the study area are essential to halt wind hazard