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University of Aberdeen (1973)

Comparative studies of selected semi-arid soils near Mosul, Iraq

Al-Juburi, Kadhim Daud

Titre : Comparative studies of selected semi-arid soils near Mosul, Iraq

Auteur : Al-Juburi, Kadhim Daud

Université de soutenance : University of Aberdeen

Grade : Doctor of Philosophy (PhD) 1973

The Tigris and Euphrates rivers provide water for irrigation which is the backbone of the agriculture in Iraq. Cultivation has been concentrated on the terraces and the flood plains of the Twin- rivers where fertile soils have been cultivated intensively for several thousand years. In addition, Iraq has a vast desert, a low undulated hilly region and high mountains. All these factors result into climatological and physiographic variations which accompany variations in soil properties. The semiarid north and north-east of the country is covered mostly by either deep brown soils developed in material washed down from the mountains or by brown to reddish-brown soils developed in fine textured materials. The soils of the Tigris terraces seem to have developed on a mixture of alluvial and aeolian material deposited during a pluvial and interpluvial periods. The purpose of this work is to investigate some soil properties which might help to elucidate the evolution of the site and the pedogenesis of the soils. In addition, it is hoped that this work might provide a general background for development programmes in land use and further pedological investigations. With regard to the layout of the thesis, it consists of seven chapters. The first two chapters review the climate, geology, land use pattern and soils of Iraq, with emphasis on the north and north- east of the country. Certain pedological features of Iraqi soils were reviewed in chapter three, while field investigations, labora- tory methods, results, discussion and the conclusion are to be found in the last four chapters respectively.

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