Physical and microbiological properties of alluvial calcareous Çumra province soils (Central Anatolia, Turkey)

Authors : Ahmet Sami EROL, Evgeny SHEİN, Evgeny MİLANOVSKİY, Fariz MİKAİLSOY, Fatih ER, Sabit ERSAHİN

Pages : 107-110

Doi:10.18393/ejss.13596

View : 15 | Download : 5

Publication Date : 2015-03-18

Article Type : Research Paper

Abstract :Alluvial calcareous soils in Central Anatolia insert ignore into journalissuearticles values(Konya province, Çumra district); has a heavy granulometric composition insert ignore into journalissuearticles values(average clay);, low organic carbon content insert ignore into journalissuearticles values(less than 1%);, but stable pore space structure and favorable agrophysical properties. Studies of the water regime in drip irrigation confirm favorable hydrological properties of these soils. It is assumed that the favorable structure of the pore space due to vigorous activity a large and diverse soil biota. Four phyla dominate in soil biota, among which predominate Actinobacteria. The higher insert ignore into journalissuearticles values(Streptomyces);, and lower insert ignore into journalissuearticles values(three species Rhodococcus); actinobacteria are predominant in large amounts as a part of this phyla. Large biodiversity at a sufficiently high bacteria richness formed the structure of the microbial community that contribute to the balanced production of specific metabolites, including gases insert ignore into journalissuearticles values(CO2, N2);, which allows the soil to function actively, preventing compaction of the pore space and maintaining optimal density, porosity, hydrologic properties of the studied silty clay soils. m the uppermost soil horizons. Analyses of heavy mineral fraction show presence of metamorphic and igneous minerals which indicate participation of weathering products from other rock types in the nearby area. The types of heavy minerals in soils depend more on composition of parent rocks and geomorphic position than on climate type. Soils from Nova Lovcha show similar composition, but the quantity of goethite and hematite significantly increase in soil from plain. Typical high-metamorphic minerals as andalusite, kyanite and sillimanite present only in Nova Lovcha, while garnet dominates in Petrovo and opaque minerals - in Dobrostan. Red soils, formed on slopes, where erosion prevails over accumulation, contain more illite, smectite and vermiculite-smectite, and very few or no kaolinite, whereas the kaolinite is dominant in soils formed on plain. The mineralogical composition of clays in different polygons depends on geomorphic position insert ignore into journalissuearticles values(altitude, slope or plain);, and less on climate type. The weathering processes in the highest polygon Dobrostan insert ignore into journalissuearticles values(more than 1200 m); are in early stage insert ignore into journalissuearticles values(illite, vermiculite-smectite, and smectite);, whereas in Nova Lovcha insert ignore into journalissuearticles values(above 700-900 m); and Petrovo insert ignore into journalissuearticles values(1000 m); the domination of kaolinite suggests an advanced weathering processes.
Keywords : soil physics, pore space, mineralogical composition, microbiological composition, agrophysics