| Issue |
E3S Web Conf.
Volume 224, 2020
Topical Problems of Agriculture, Civil and Environmental Engineering (TPACEE 2020)
|
|
|---|---|---|
| Article Number | 04012 | |
| Number of page(s) | 5 | |
| Section | Agriculture and Bioscience | |
| DOI | https://doi.org/10.1051/e3sconf/202022404012 | |
| Published online | 23 December 2020 | |
Composition of organic-mineral complexes (OMC) migrating in the reclaimed sod-podzolic soils (Umbric Albeluvisol Abruptic)
1
Agrophysical Research Institute, Grazhdanskiy pr., 14, 195220 St. Petersburg, Russia
2
St. Petersburg State Agrarian University, Petersburgskoe shosse, 2, 196601 St. Petersburg, Pushkin, Russia
3
All-Russia Research Institute of Agricultural Microbiology, Podbelsky shosse, 3, 196608 St. Petersburg, Pushkin, Russia
* Corresponding author: av.lavrishchev@yandex.ru
The composition of organo-mineral complexes (OMC) migrating from the arable horizon limed by Umbric Albeluvisol Abruptic was studied. The carbon content in organic-mineral complexes (OMC) ranged from 5.5 to 5.7%. The optical density index (Esmg/ml) varied in the range of values from 2.7 to 3.1, characteristic for fulvic acids (FA). It was established that FAs averaged with bases retain the ability to exert a destructive effect on soil minerals, transferring a significant amount of Al, Mn, and Fe into solution. According to their ability to migrate as part of OMC, the elements studied in the experiment with dolomite particles at a dose of 7.35 t/ha were arranged in the following decreasing sequence: Mn > Al > Fe. In the experiment with conversion chalk (CC) at a dose of 20.25 t/ha, this sequence was Al > Mn > Fe.
© The Authors, published by EDP Sciences, 2020
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