Dynamics of agrochemical properties of gray forest soil of the Western Siberia’s sub-boreal zone affected by a long-term agricultural exploitation

D.I Eremin,E.P Renev,E Renev,Y Shavrokov,V Romanyuk,R Changzhong,G Batalova

doi:10.1051/bioconf/20213603006

D.I Eremin, E.P Renev + Show 5 more

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https://doi.org/10.1051/bioconf/20213603006

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Abstract

We studied the changes in the agrochemical properties of the gray forest soil in the territory of Western Siberia’s sub-boreal zone affected by the long-term use of the organomineral fertilizers in the grain-follow-row crop rotation and in its absence. We used virgin areas of gray forest soil situated in the immediate proximity to the fields as a control. The anthropogenic changes of morphological features throughout the gray forest soil profile were identified based on the use of fixed permanent plots laid down in 1960. This paper describes the dynamics of the actual, exchange, and hydrolytic acidity as well as the amount of absorbed bases, together with the base exchange capacity and the degree of base saturation. The study of arable gray forest soil for the period 1960-2020 was performed. This provided an opportunity to identify the causes of its chemical degradation in the sub-boreal zone of the Trans-Urals under the conditions of a plant residue shortage. The systematic use of mineral fertilizers affects the base exchange capacity and triggers an increase in the arable layer’s acidity. The use of an organic fertilizer system stabilizes the chemical properties of gray forest soil.

Highlights

The intensification of agriculture in Western Siberia has begun in the middle of the XX century and continues to the present time
The description of morphological features of the gray forest soil profile on virgin land showed that the current process of soil formation is presented by podzolization and illuviation [10, 11]
The gray forest soil is distinguished by well-developed genetic horizons and has the following formula for the profile structure: AO-AY-BEL-Bt-Bt(Ca)-C(Ca)

Summary

Introduction

The intensification of agriculture in Western Siberia has begun in the middle of the XX century and continues to the present time. The switch to a market economy promoted the transformation of the agricultural system in the direction of increasing the productivity of arable land with a simultaneous reduction in the product cost. This caused many farms to reject a set of measures to increase the fertility of arable land and increase the anthropogenic load on the soil [4, 5, 6]. This is true of podsolic and gray forest soils

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