PEDOLOGICAL STUDIES AND TREATED WASTEWATER REUSE FOR TIMBER TREES PRODUCTION IN EGYPT- EAST NEW CAIRO CITY

Abstract

The present investigation soils located at desert part of east New Cairo City , south of El Kattamia –El Ain El –Sokhna new high way . The area under consideration have three physiographic units: Soil of fans and outwash plain which have three soil map units i.e. calcareous moderately deep and deepsoils, gypsiferous moderately deep to deep soils and calcigypsids moderately deep soils. Miscellaneous (Rock Soils) appear three soil map units i.e. calcareous shallow and very shallow soils, gypsiferous shallow and very shallow soils and calcigypsids shallow and very shallow soils. Miscellaneous (Rock land). The soils are classified to family level according to USDA, 2010. Current suitability study shows that soils under consideration have marginal level (S3) except soil profiles l and 6 which have moderately suitable level (S2) while soil profile 11 appear not suitable class (N1). The potential suitability was moderately suitable (S2) except soil profiles 5,7,8,10 and 11 and have marginal level (S3), while soils profile 6 has highly suitable class (S1). Concerning the available Fe, Mn, Zn, and Cu in soil are ranged between low to adequate except extractable Cu of calcigypsids soils have high level. Treats sewage water have different limitation , so, it must be used in special cases like timber trees and drip irrigation or improved surface irrigation system is suggested system for irrigation.