Biologically Active Organic Matter in Soils of European Russia

Семенов, В. М.; Когут, Б. М.; Zinyakova, N. B.; Masyutenko, N. P.; Malyukova, L. S.; Лебедева, Т. Н.; Tulina, A. S.

doi:10.1134/s1064229318040117

Cited by 27 publications

(18 citation statements)

References 20 publications

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“…The available SOM potentially mineralizable by microorganisms is regarded as biologically active and the stable and poorly biodegradable SOM, as biologically stable [7]. The biological stability of SOM is quantitatively illustrated by three parameters: (i) percentage of active organic matter in the total SOM content; (ii) mineralization rate constant; and (iii) BSI [6].…”

Section: Resultsmentioning

confidence: 99%

“…Assessing SOM mineralization capacity and biological stability. The potentially mineralizable organic matter was assessed by incubating intact soil samples (10 g) at constant temperature (22°C) and moisture content (25 wt %) with C-CO 2 quantification over 160-170 days, as described by Semenov et al [6]. Soil samples were incubated in glass 100-mL flasks in triplicate.…”

Section: Objects and Methodsmentioning

confidence: 99%

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A Study of Soil Organic Matter Stability Using Derivatography and Long-Term Incubation Methods

et al. 2021

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Soil organic matter (SOM) includes many classes of labile compounds available for microbial decomposition or, conversely, stable compounds protected from biodegradation by biological, chemical, and physical stabilization. It is believed that the more thermal energy is spent on the destruction of soil organic matter, the more stable and more resistant for biodegradation it is. We compared the thermal and biological stabilities of organic matter in eleven soil types from deciduous forest, forest-steppe, steppe, and semidesert bioclimatic areas of the European Russia. According to the activation energy (Ea), the highest SOM thermal stability was typical of the ordinary chernozem and meadow vertic soil. The lowest SOM thermal stability was found for gray forest soil; other soil types were characterized by an intermediate resistance towards thermal oxidation. The thermally labile pool (<390–400°C) of organic matter in soils was on the average 41% (32–60%) of the total SOM, while the thermally stable pool (>390–400°C) was on the average 59% (40–68%). The SOM biological stability estimated by the ratio of potentially mineralizable organic matter to that resistant to mineralization (biological stability index) decreased in the following order: ordinary chernozem (Haplic Chernozem (Loamic, Pachic)) > meadow vertic soil (Pellic Vertisol (Gleyic, Humic)) > gray forest soil (Luvic Greyzemic Phaeozem (Loamic)) = meadow chestnut soil (Gleyic Kastanozem (Chromic)) > meadow solonetz (Endosalic Gleyic Solonetz (Loamic, Cutanic)) > alluvial meadow soil (Eutric Fluvisol (Humic, Oxyaquic)). The potentially mineralizable SOM pool in the studied soils was 6–27-fold lower as compared with the pool of thermally labile SOM, and the parameters that characterize SOM thermal stability did not correlate with the biological stability index. Thus, SOM thermal lability is not identical to its biodegradability.

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Section: Resultsmentioning

confidence: 99%

Section: Objects and Methodsmentioning

confidence: 99%

A Study of Soil Organic Matter Stability Using Derivatography and Long-Term Incubation Methods

et al. 2021

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“…It is difficult to balance carbon due to the fact that the primary processes of photosynthesis use carbon dioxide released from the soil both in the course of microbiological activity and again as a result of the "respiration" of the roots. To a large extent, the reserves of soil carbon, depending primarily on the type of soil [6], are associated with its removal with the harvest [7], which, to varying degrees, is associated with the loss of nitrogen [8,9].…”

Section: Figmentioning

confidence: 99%

The use of natural resources and reproduction of soil fertility in obtaining a given quantity of products

Акименко¹,

Masyutenko²,

Dudkina³

2021

BIO Web Conf.

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The purpose of the study is to determine the suitability for making sound decisions on the reproduction of soil fertility of the following quantitative laws of the methodology for managing material and energy flows in crop rotations: the energy content of 1 ton of humus (in GJ) is equal to half the nitrogen contained in it (in kg); the amount of exchangeable energy (in GJ) in 100 kg of phytomass is equal to the halfsum (in kg) of nitrogen and phosphorus pentoxide (about 2/3 of it falls on nitrogen). The approbation was carried out on the data of long-term stationary experiment. The results are as follows: with an increase in the level of fertilizer, nitrogen removal with the yield increased by 30–40%, and that of phosphorus by 6–12%; due to doubling the manure rate and the use of mineral fertilizers, the phosphorus balance became positive, and the nitrogen one remained negative, but improved by 17–28% depending on the type of a crop rotation. The deviation of the calculated balance of the exchangeable energy from the actual one on the poorly and most richly fertilized backgrounds was -5.5 to -11.9% and 3.0 to 8.6%., respectively.

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“…In 2017, we assessed the provision of soils with labile organic matter. Arable soils have a low and very low content of an easily transformed part of humus due to the extensive use or a deficit of new organic material [10,13]. In three surveyed plots, its amount in the arable layer was at the average level (3455-3906 mg/kg), which is typical for soils with stabilized humus state while observing the usual zonal agrotechnical measures.…”

Section: Advances In Social Science Education and Humanities Researcmentioning

confidence: 99%

Assessment of the Agroecological State of Long-Term Irrigated Meadow-Chernozem Soil

Aksenova¹,

Nevenchannaya²,

Boiko³

et al. 2020

Proceedings of the International Scientific Conference the Fifth Technological Order: Prospects for the Development and Moderni

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We examined the effect of long-term irrigation on the fertility of meadow-chernozem soil and evaluated its current agroecological state. The humus content stabilized at the average level and varied over the years of the research in the range from 4.95-5.18% in the 0-20 cm layer to 4.88-5.21% in the 20-40 cm layer. The humification degree of organic matter in irrigated soil was high, the ratio of humic and fulvic acids did not change and amounted to 1.5-1.7, the type of humus remained stably fulvate-humate. Humic acids occupy more than 50.0% of the humus and their amount did not change under the influence of irrigation. Soils are characterized by a very low content of the free fraction of humic acids, a medium content of acids linked to calcium and a high content of acids, bound to the mineral part of the soil. A redistribution of fractions was observed within the groups of humic acids. The amount of humic and fulvic acids bound to the mineral part of the soil increased by 1.2-2.0% with simultaneous reduction of humic acids linked to calcium. The content of the fraction of free fulvic acids increased. The energy potential of organic matter is at the critical level. The part of the most accessible energy is accumulated in mobile humic acids. They concentrate from 79 to 192 GJ/ha of potentially active energy. Under the influence of irrigation in the soil, a tendency for the development of secondary alkalinization was noted, as evidenced by an increase in the composition of exchange magnesium cations and an increased sodium content reaching 7%. The structural aggregation testified to the development of physical degradation. The content of aggregates with agronomic value did not exceed 45.2-59.9% and was below the optimal level. Soil aggregates were not resistant to the destructive effects of water.

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Biologically Active Organic Matter in Soils of European Russia

Cited by 27 publications

References 20 publications

A Study of Soil Organic Matter Stability Using Derivatography and Long-Term Incubation Methods

A Study of Soil Organic Matter Stability Using Derivatography and Long-Term Incubation Methods

The use of natural resources and reproduction of soil fertility in obtaining a given quantity of products

Assessment of the Agroecological State of Long-Term Irrigated Meadow-Chernozem Soil

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