The nature of organic carbon and total nitrogen distribution in the fractions of leached chernozem aggregates and gray soil in Western Siberia

Eremin, Dmitry; Demin, E A

doi:10.1088/1755-1315/1043/1/012016

“…When loosening is not carried out, part of the plant residues gets into the lower layers of the soil, which makes it possible for the soil microflora to work throughout the treated layer. A significant decrease in the production of carbon dioxide on a zero background is due to the fact that aeration in the soil layer of 10-30 cm decreases here, thereby reducing the carbon dioxide emission [12,13]. In total, for the period from May 1 to May 11, 396 CO2 kg/ha was released from the soil under the dump tillage (Fig.…”

Section: Resultsmentioning

confidence: 99%

Influence of tillage methods on carbon dioxide emissions in spring wheat crops

Demin,

Miller,

Likhanov

2024

BIO Web Conf.

1

0

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The agriculture intensification is associated with an increase in anthropogenic load on arable soils. Tillage leads to disruption of the natural process of soil formation in connection with which the soil biota activity changes and the carbon cycle is disrupted. The purpose of the study is to establish the effects of the tillage method on the carbon dioxide emission in spring wheat crops. The emission of carbon dioxide during the growing season of spring wheat varies significantly depending on the soil processing method and temperature. At the beginning of spring wheat development, the daily emission of carbon dioxide during the dump and subsurface tillage method does not exceed 36.0 and 36.2 CO2 kg/ha using zero technology provides a reduction in production CO2 production to 27.8 kg/ha*day. With an increase in soil temperature by July 24, the daily emission increases on a dump and subsurface background to 105.5 and 106.0 CO2 kg/ha*day, on a zero background to 95.4 CO2 kg/ha*day. In the future, it decreases. The total carbon losses during the dump and subsurface tillage methods are 2829 and 2793 kg/ha, the use of zero tillage technology reduces carbon losses in grain agrocenosis by 18%.

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Organic Carbon Content in Structural Units of Leached Chernozem With Increasing Doses of Mineral Fertilizers in the Forest-Steppe Zone of the Urals

Demin,

Nakov,

Volkova

2024

Vestnik of Kazan State Agrarian University

0

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Carbon reserves concentrated in the soil determine its fertility and buffering capacity. Structural aggregates are formed due to organic matter, which serves as a binding material in the formation and stabilization of soil structural units. Intensive use of soil during cultivation of agricultural crops has a significant impact on its biological activity. This leads to significant changes in the natural process of soil evolution and its degradation. The objective of the study was to determine the effect of mineral fertilizers on the content and reserves of organic carbon in various structural units of leached chernozem in the forest-steppe zone of the Urals. Long-term use of soil for arable land without the application of mineral fertilizers worsens the soil structure Kstr=1.6 units. Fertilizers applied in the calculation of obtaining 3.0 and 4.0 t/ha of grain contribute to the improvement of the soil structure (Kstr=2.0 ... 2.1 units). The maximum amount of organic carbon (Corg) in the control variant was noted in aggregates > 10 and < 0.25 mm in size - 4.77 and 4.61%. Systematic application of fertilizers in the calculation of the formation of 3.0 and 4.0 t/ha of grain provides an increase in Corg content in soil aggregates from 1.0 to 0.25 mm in size by 0.70 ... 0.72%. When applying fertilizers for the planned yield of 5.0 t/ha, a loss of carbon from aggregates of 10 ... 3 mm in size is observed by 0.45%. At the maximum agricultural background, Corg content in aggregates > 10 and < 0.25 mm decreases to 3.70 and 4.11%. In the control Corg reserves in agronomically valuable aggregates reach 59.3% of the total reserves. Systematic application of fertilizers based on a yield of 3.0 ... 4.0 t/ha of grain increases the carbon reserves in valuable soil aggregates to 66.2 ... 68.0% of the total reserves. Planning higher yields leads to a decrease in carbon reserves in agronomically valuable aggregates.

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Organic Carbon Content in Structural Units of Leached Chernozem With Increasing Doses of Mineral Fertilizers in the Forest-Steppe Zone of the Urals

Demin,

Nakov,

Volkova

2024

Vestnik of Kazan State Agrarian University

0

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Carbon reserves concentrated in the soil determine its fertility and buffering capacity. Structural aggregates are formed due to organic matter, which serves as a binding material in the formation and stabilization of soil structural units. Intensive use of soil during cultivation of agricultural crops has a significant impact on its biological activity. This leads to significant changes in the natural process of soil evolution and its degradation. The objective of the study was to determine the effect of mineral fertilizers on the content and reserves of organic carbon in various structural units of leached chernozem in the forest-steppe zone of the Urals. Long-term use of soil for arable land without the application of mineral fertilizers worsens the soil structure Kstr=1.6 units. Fertilizers applied in the calculation of obtaining 3.0 and 4.0 t/ha of grain contribute to the improvement of the soil structure (Kstr=2.0 ... 2.1 units). The maximum amount of organic carbon (Corg) in the control variant was noted in aggregates > 10 and < 0.25 mm in size - 4.77 and 4.61%. Systematic application of fertilizers in the calculation of the formation of 3.0 and 4.0 t/ha of grain provides an increase in Corg content in soil aggregates from 1.0 to 0.25 mm in size by 0.70 ... 0.72%. When applying fertilizers for the planned yield of 5.0 t/ha, a loss of carbon from aggregates of 10 ... 3 mm in size is observed by 0.45%. At the maximum agricultural background, Corg content in aggregates > 10 and < 0.25 mm decreases to 3.70 and 4.11%. In the control Corg reserves in agronomically valuable aggregates reach 59.3% of the total reserves. Systematic application of fertilizers based on a yield of 3.0 ... 4.0 t/ha of grain increases the carbon reserves in valuable soil aggregates to 66.2 ... 68.0% of the total reserves. Planning higher yields leads to a decrease in carbon reserves in agronomically valuable aggregates.

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The nature of organic carbon and total nitrogen distribution in the fractions of leached chernozem aggregates and gray soil in Western Siberia

Cited by 3 publications

References 19 publications

Influence of tillage methods on carbon dioxide emissions in spring wheat crops

Influence of tillage methods on carbon dioxide emissions in spring wheat crops

Organic Carbon Content in Structural Units of Leached Chernozem With Increasing Doses of Mineral Fertilizers in the Forest-Steppe Zone of the Urals

Organic Carbon Content in Structural Units of Leached Chernozem With Increasing Doses of Mineral Fertilizers in the Forest-Steppe Zone of the Urals

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