Fertility of Arable Chernozems of Western Siberia during Long-Term Application of Mineral Fertilizers

DOI

10.2991/agrosmart-18.2018.30How to use a DOI?

Keywords

agrophysical properties, structural and aggregate composition, nutrient mode, crops, planned yield

Abstract

Western Siberia is the area of risk farming; however, it has always been and still remains a promising region for the development of modern agriculture. Unlike well-developed European chernozem or black soil, their Siberian counterparts are unstable to the anthropogenic impact. Therefore, the farming technologies for growing crops developed for the Central Black Earth Region are not acceptable for Western Siberia. Studies on the influence of increasing doses of mineral fertilizers were carried out in the Department of Soil Science and Agrochemistry of the Northern Trans-Ural State Agricultural University located in the forest-steppe zone of the Trans-Urals. These studies covered the application of fertilizers for the planned yield from 3.0 to 6.0 t/ha of crops in the period from 1995 to 2015. Partial migration of nitrate nitrogen outside the arable layer was identified. The transition of phosphorus fertilizers non-demanded by plants to phosphate forms that are inaccessible to them was revealed, which indicates the need for justification of doses of mineral fertilizers in the fields of Western Siberia. The negative effect of high doses (more than N120P30 kg/ha) on the agrochemical and agrophysical properties of arable balck soil in the Northern Trans-Ural region was revealed. For the period of 20 years the content of agronomically valuable aggregates (1.00-0.25 mm) has decreased from 89.9 to 76.5 mm, and their water resistance has droped down from 75.4 to 66.0%. Under the influence of mineral fertilizers, the rate of compaction of the arable horizon increases by 7.0% with respect to the natural soil fertility.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Dmitry Eremin
PY  - 2018/12
DA  - 2018/12
TI  - Fertility of Arable Chernozems of Western Siberia during Long-Term Application of Mineral Fertilizers
BT  - International scientific and practical conference "AgroSMART - Smart solutions for agriculture" (AgroSMART 2018)
PB  - Atlantis Press
SP  - 155
EP  - 159
SN  - 2352-5401
UR  - https://doi.org/10.2991/agrosmart-18.2018.30
DO  - 10.2991/agrosmart-18.2018.30
ID  - Eremin2018/12
ER  -