ANBAR JOURNAL OF AGRICULTURAL SCIENCES

Abstract

According to the importance of soil tilth that should be determined by specialists of management and teaching was of the farm. This study was carried out determine the classes of tilth capability duo to Dickinson statistical method, for two projects as samples to fluvial soils west of Iraq.
Sime detailed soil survey map of Right-Euphrates and Al-Sqlawia were prepared, as base maps to conduct this study, where enough pedons, described and lab analyzed previonsly by formal directory in soil survey reports of each. Which were executed of projects. largest numbers of samples descriptions were collected to get a better representating statistical sample for the area in a reality of 720 sampls for Al,C1and C2 horizons . sub data included the information of soil texture, consistency at (dry, moist ) and structure of soil materials of recognized each map unit.
Results were designated on on Dickinson triangle, then classified after their tilth was descr.
Results of base map cartographic analysis of both projects showed that Aridisols soil order was established, order farms abut 46.3% and 21.1% while Entisols was forming 53.7% and 78.9% for Right-Euphrates in a moderate soil tilth while other soils in this project and Al-Sqlawia projects were weak tilth.
In the moist consistency soil tilth was 16.4% of Right– Euphrates was moderate tilth while 44.6% of Al-Saqlawia Soils were is good tilth and 11.3% moderate, then 44.1% were weak tilth.