Abstract <p>Between 2010 and 2023 we conducted research on the territory of <i>Rakityanskii Semkhoz</i> LLC, in the western part of the Belgorod oblast. The soil cover is primarily Haplic Chernozem and Luvic Chernozem, with clayey loams on loess-like loams. The purpose of the study was to analyze the impact of long-term use of high doses of livestock by-products on crop yields and key soil fertility parameters. We used materials from four cycles of continuous agrochemical soil surveys, carried out according to generally accepted methods. In the course of the research, the annual level of application of organic fertilizers was in the range of 14.6–15.7 t/ha (in terms of cattle manure), with 63.6–68.1 kg/ha of mineral fertilizers. In 2019–2022, compared with 2010–2014, the average yield of winter wheat increased by 1.41 t/ha, grain corn by 3.93, and soybeans yield grew by 0.6 t/ha. Over the period from 2010 to 2023, the mean weighted content of soil organic matter increased by 0.48%, that of mobile forms of phosphorus by 50, potassium by 49, sulfur by 1.0, manganese by 2.52, zinc by 1.72, and copper by 0.045 mg/kg. The content of mobile forms of the studied elements in the soils varied greatly due to uneven application of organic fertilizers. There was no excess of MPC of mobile forms of manganese, zinc, copper, or cobalt in the soils, with maximum values up to 40, 15.2, 1.0, and 0.3 mg/kg, respectively.</p>

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Fertility Dynamics of Arable Soils under Intensive Use of Livestock By-Products

  • S. V. Lukin

摘要

Abstract

Between 2010 and 2023 we conducted research on the territory of Rakityanskii Semkhoz LLC, in the western part of the Belgorod oblast. The soil cover is primarily Haplic Chernozem and Luvic Chernozem, with clayey loams on loess-like loams. The purpose of the study was to analyze the impact of long-term use of high doses of livestock by-products on crop yields and key soil fertility parameters. We used materials from four cycles of continuous agrochemical soil surveys, carried out according to generally accepted methods. In the course of the research, the annual level of application of organic fertilizers was in the range of 14.6–15.7 t/ha (in terms of cattle manure), with 63.6–68.1 kg/ha of mineral fertilizers. In 2019–2022, compared with 2010–2014, the average yield of winter wheat increased by 1.41 t/ha, grain corn by 3.93, and soybeans yield grew by 0.6 t/ha. Over the period from 2010 to 2023, the mean weighted content of soil organic matter increased by 0.48%, that of mobile forms of phosphorus by 50, potassium by 49, sulfur by 1.0, manganese by 2.52, zinc by 1.72, and copper by 0.045 mg/kg. The content of mobile forms of the studied elements in the soils varied greatly due to uneven application of organic fertilizers. There was no excess of MPC of mobile forms of manganese, zinc, copper, or cobalt in the soils, with maximum values up to 40, 15.2, 1.0, and 0.3 mg/kg, respectively.