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        1 - The relationship between geological formation and landform with soil formation, Case study of southern part of Orumieh Plain
        Hengameh Javadi Reza Sokouti Oskoei Ebrahim Pazira
        The aim of this study was to study the effect of landform and geological formations on some physico-chemical properties of soils in order to better identify the soil in order to optimize land management and promote the sustainable agriculture of the southern part of Oru More
        The aim of this study was to study the effect of landform and geological formations on some physico-chemical properties of soils in order to better identify the soil in order to optimize land management and promote the sustainable agriculture of the southern part of Orumieh Plain with an area of 35000 (ha) in West Azarbaijan province, Iran. In this research, satellite images, aerial photographs, topographic and geology maps were used to identify and distinguish different forms of land. Separation of soil series were carried out based on geomorphologic and geophysical methods. 40 soil profiles were drilled and described in standard dimensions. Five soil profiles were sampled every genetic horizon and transferred to the laboratory. The moisture and temprature regime of the soils were determined as Xeric and Mesic. Soils of the studied area were classified as  Inceptisols and grate subgroups of Fluventic. The most dominant formations in the Barandoz and Ghasemlou river catchment were limestone, and lime is one of the determinant factors in the formation of rocks at different soils in the study area. On the other hand, physiography and topography have also played a significant role, so that the upper terraces have more developed soils and some sloping regions had young and less evolved soils. With decreasing height and proximity to Lake Urmia, the effect of groundwater level and its salinity on the profiles is evident. In the meantime, the margin of the rivers due to the sediments of the present age have young and uncoated soils. Manuscript profile
      • Open Access Article

        2 - An investigation of genesis, classification and physico-chemical soil properties of cultivation pistachio Sirjan plain, Kerman province
        Ali Zeinadini Meymand Mohamad Hasan Masihabadi Mehrdad Esfandyari
        Sirjan plain is one of main and potential areas of pistachio cultivation in Kerman province, Iran. A east to west transect perpendicular to Sirjan plain development was selected, and 15 profiles were described and sampled in the present physiographics under pistachio cu More
        Sirjan plain is one of main and potential areas of pistachio cultivation in Kerman province, Iran. A east to west transect perpendicular to Sirjan plain development was selected, and 15 profiles were described and sampled in the present physiographics under pistachio cultivation. Physical and chemical property of soil samples were determined and classified up to family level. The Ocric horizon was separated in surface layer and Salic, Gyosic and Cambic horizons was in lower layers. During transect, profiles from east to west classified of Entisols and Aridisols and at least development shown in East and greatest change was observed in center and west of transect. Physiography of the gravelly alluvial and colluvial fans (East and South- East) has been less affected by soil formation processes than in flood plains and low lands (West). The main parameters affecting pistachio production are soil texture and gravel in East of transect (profiles 1 to 4) and salinity, sodium adsorption ratio, gypsum, high groundwater levels and physical properties in the Center and West of transect (4 to 12). For efficient land use under cultivation exact study and monitoring information, correct salinity and alkalinity, management of gypsic soils and improvement of soil fertility and organic matter is recommended. Manuscript profile