A PROPOSED MODIFIED LAND CAPABILITY SYSTEM FOR EVALUATING SANDY SOILS IN WESTERN NILE DELTA REGION

Document Type : Original Article

Authors

Soil Sci. Dept., Fac. Agric., Ain Shams Univ., Cairo, Egypt.

Abstract

This study aimed to evaluate soils of about 200.000 feddan for irrigated agriculture in the western desert of Egypt. The evaluation process was conducted using Sys and Verheye 1974 system and the proposed one derived from Sys and Verheye 1974.The proposed system is trial designed to fit the local environmental conditions of the investigated area. Modification proposed concerned, soil texture, soil salinity level, CaCO3 content. Two other parameters were introduced to those of Sys and Verheye 1974, i.e, hydraulic conductivity and quality of irrigation water. Also soil parameters were divided into physical properties (P) which include soil texture, profile depth, drainage conditions, slope and hydraulic conductivity and chemical ones which include ECe, ESP, CaCO3, gypsum and irrigation water quality (ECiw). Another method for calculation was also introduced. Results of applying the proposed evaluating systems are completely different than those resulted by using Sys and Verheye 1974. It is thought that the obtained results are more realistic and fit the present field condition and soil outcome.

Keywords

Journal of Soil Sciences and Agricultural Engineering
Volume 34, Issue 6
June 2009
Pages 7091-7101

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