o:1201 Agrogenic evolution of soddy-podzolic soil: feasibility of repeated re-involvement in cultivation of the fallow lands formed on band clays en Abstract: The hydrothermal regime of sod-podzolic gleyy clay soils formed on band clays is characterized by seasonal waterlogging and associated development of the gley process. During the cultivation its water-physical and chemical properties are improved mainly due to a drainage system and appropriate fertilization and liming. But at the same time, destruction of the colloidal complex and its loss from the arable horizon can occur. Draining excess moisture lead to the processes of iron reduction are attenuated. The study of the transformation of the soddy-podzolic gleyic clay soil in a long-term agricultural use (> 200 years) was carried out in Leningrad region, northwest Russia. The morphological structure, particle size distribution, content and ratio of ferrous and oxide forms of iron in the profile of virgin (indigenous forest) and arable drained soil were studied. In addition, changes in the organogenic-profile were traced in the course of long-term agrogenesis (> 200 years) with a pipe drainage system. Sažetak Identifikatori monografske publikacije: ISBN 978-86-7520-556-2 soddy-podzolic clay soil; agrogenic evolution; fine-dispersed fraction; organogenic-mineral profile; colloids 2023-02-13T09:22:35.997Z 44 no 46 Andrey Litvinovich Agrophysical Research Institute 46 Anton Lavrishchev St. Petersburg State Agrarian University 46 Vladimir Bure Agrophysical Research Institute 46 Tara Grujić Institut za zemljište 0000-0002-0122-6402 46 Elmira Saljnikov Institut za zemljište 0000-0002-6497-2066 application/pdf 378252 https://unilib.phaidrabg.rs/o:1201 no yes 1 70 92000004 71A05 Proceedings SoilAgroIT 2022 Novi Sad 2022