Effect of Agricultural Cultivation on Formation of Interstratified Minerals in Some Gypsifrous Soils | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 16, Issue 2, June 2016, Pages 197-208 | ||
| Authors | ||
| Basim Shakir Obaid Al-Obaidi; Adnan Mhemed Hawas Aljabori | ||
| Abstract | ||
| This study was carried out to find out effect of agricultural exploitation on formation of interstratified minerals in some gypsifrous soils And the impact of the Agricultural Cultivation on minerals and Transformation to interstratified minerals. Soils were Selected tow-site from two different location taking into account that two of them exploited crop wheat and irrigated by way of irrigation and watered with water wells two and the ather were never cultivated. Morphology characterization of The selected sites Pedons and described then estimated some physical , chemical and mineralogical properties soil samples of the study. Calculated ratios of molecular to the most important elements in the crystal structure of the components of the mineral relative to each other, so as to study the degree of severity of weathering on material originally soils study, where the results showed that those ratios were varied between Pdons study all, especially in the area shricat unused, and the ratio of molecular (CaO+MgO+K_2 O)/(SiO_2+Al_2 O(_3^ )+Fe_2 O_3^ ) Which is the closest representation to the reality of the study in terms of weathering of clay minerals and converts to interstratified minerals that the ratio is within the range of molecular (1.05-0.41) And the first value represents the horizon of soil surface SHIRQAT unused, while the second represents the value sub surface soil SHIRQAT that are exploited advantage of the wheat crop, as well as the results showed that the values of these ratios were reduced within providers unused soils at all locations except providers soils SHIRQAT X-ray examinations showed separated models contain clay soils study Smectites, chlorite,, Palygoriskite, Kaolinite and Mica . Calculated the percentage of clay minerals by measuring the area under the diffraction, as the results showed rule Palygoriskite , the rates while other metals came in accordance with the following order: Smectites > Kaolinite > Mica > chlorite X-ray examinations showed the unbroken clay models contain exploited soils located within the area of Shirqat on interstratified minerals of the two types of regular and irregular, While irregular appeared in soils exploited sites Makhoul . Based on the results obtained have suggested the current study to be tow mechanical interstratified minerals in the soils of the study, as we believe that be interstratified minerals in the SHIRQAT soils are exploited according to mechanical dissolving shift (DT), while the mechanical switch is a dominant feature steel for soils Makhool. | ||
| Keywords | ||
| Agricultural Cultivation; Formation; Interstratified Minerals; Gypsifrous Soils | ||
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