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Information Journal Paper

Title

Soil Fractions Mineralogy in Some Long-Term Cultivations with Xeric Moisture Regimes

Pages

  89-102

Abstract

 The identification of mineral types in size fractions of soils with different cover plants is a matter of special importance. The aim of this study was investigation of the soil particles’ minerals under continues cultivation. Three different regions with similar soil moisture regime (Xeric) including Gyan, Doroud and Kangavar plains were selected. Thirteen pedons with different properties and Crop cultivation history were selected and soil profiles were dug and analyzed. The selected soils were under cultivation of rice, wheat, canola and sugar beet cultivations. Soil samples were collected from different horizons and their physicochemical and mineralogical characteristics were measured. All size fractions were separated and the contents of minerals in sand, Silt and Clay fractions were determined. X-ray diffraction, TEM and SEM analyses of Clay fraction in rice cultivation revealed that the most semi quantitative of minerals were in order of: chlorite> vermiculite> smectite> illite. The ponding condition provided a suitable position for stability of chlorite and vermiculite minerals. The presence of vermiculite in paddy soil might cause biotite weathering. The most of smectite content was observed in the Clay fraction in sugar beet cultivated soil followed by canola cultivation. The neoformation of smectite containing Ca as exchangeable cation was dominant in cultivated soils. The mixed minerals as vermiculite– chlorite, illite-smectite and illite-vermiculite were predominantly observed in the Silt fraction under rice cultivation and then in the sugar beet and canola cultivations. The variability of minerals in sand fraction was negligible and it was similar in all cultivations.

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    APA: Copy

    HASHEMI, S.S.. (2021). Soil Fractions Mineralogy in Some Long-Term Cultivations with Xeric Moisture Regimes. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), 30(4 ), 89-102. SID. https://sid.ir/paper/410793/en

    Vancouver: Copy

    HASHEMI S.S.. Soil Fractions Mineralogy in Some Long-Term Cultivations with Xeric Moisture Regimes. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE)[Internet]. 2021;30(4 ):89-102. Available from: https://sid.ir/paper/410793/en

    IEEE: Copy

    S.S. HASHEMI, “Soil Fractions Mineralogy in Some Long-Term Cultivations with Xeric Moisture Regimes,” WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), vol. 30, no. 4 , pp. 89–102, 2021, [Online]. Available: https://sid.ir/paper/410793/en

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