Abstract
Analysis Data for one map soil was made. whish has four-map unit at semi-Detail survey at project lie at (20 K. M. North– West of Baghdad). The study aimed to test the reliability of soil map by quality criteria. Uniformity criterion (RI) and purity method are used .data of physical and chemical properties which have relation with soil classification were studied. (Sand %, Clay %, Salt, ESP, CEC, Gypsum, Lime and Organic matter). The study showed the (ECe, ESP, Gypsum and Organic matter) given more variability within soil map unit. The study also showed that purity was 44.18% in first. While it was 47.15% after redraw map unit (similarity of more than %75 between soil unit and dominant taxonomic unit) according to Similarity method suggested by Al- Juraysi (2003).
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