STUDY THE STATE OF SOIL AT THE COTTON RESEARCH UNIT STATION / TECHNICAL INSTITUTE / MOSUL

	STUDY THE STATE OF SOIL AT THE COTTON RESEARCH UNIT STATION / TECHNICAL INSTITUTE / MOSUL
AL-TAQANI
Article 1, Volume 23, Issue 2, 2010, Pages 171-177
Abstract
The study was carried out to detection the important characteristics of the soils at the cotton research unit , which is located inside the area of the mosul technical institute on the terraces of tiqris river . The land characterized by wavey to undulating topography with slope range from (2 – 6 %) in different direction . leveling operation has been practiced on this land , then silt loam deposit taken from the river sides has been added and mixed with surface soil. Results showed that the texture of the surface soil is silt loam, which change to clay at the subsurface soil . Calcite content is very high and increased with depth (330 – 425 g/kg), for this the soil is classified as a calcareous soil . The majority of this compound is inherited from the parent material, while the other amount was crystallized by the effect of pedogenic processes . The organic matter content of this soil is very low and decreased with depth, also this soil has a medium fertility .The mentioned results reoffered that the major soil forming processes are addition , losses and translocation of fine matrereials from one point to another within the soil . These processes are responsible for the size distribution of granules in the soil solum , as well as calcification and decalcification aprocesses are active in these soils. After the improvement in some soil characteristics were done ,the soil become more appropriate for the plant production

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