The soil study area is composed of wide and nearly flat alluvium plain deposits laid by Atbara and Gash Rivers. The study area makes about 751,290 ha and lies within arid and semi-desert climate zones and experiences rainfall in the order of 100 mm in its northern edge, increasing to some 400mm at its southern boundary close to Kassala and east of New Halfa town. The soil study was based mainly on a semi-detailed level soil surveys and the key specifications are a field density of 1 observation each 150 ha. Previously published soil study information was reviewed and incorporated in the findings [5[; [17]; [14].