Dynamics of Humus Reserves and Forecast of Carbon-Investing Potential of Zonal Soils of the Republic of Tatarstan

Gaffarova, Liliya

doi:10.12737/2073-0462-2021-27-31

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Soil carbon sequestration is the most promising and cost-effective environmental strategy. Carbon sequestration increases the natural fertility of soils, reduces the risk of carbon return to the atmosphere for many years, creates prerequisites for the development of sustainable agriculture and the production of environmentally safe products [5].…”

Section: Introductionmentioning

confidence: 99%

Agroecological monitoring of soils in the educational and experimental farm of the Ural State Agrarian University

Vashukevich

Gusev

Varnina

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The analysis of the soil cover is carried out to assess the general condition and suitability of soils for agricultural activities on it and is one of the most important indicators in the course of ecological research. The article discusses the main methods of soil cover survey on experimental fields of the Ural State Agrarian University to monitor the state of soils in this area, the results of which will be used for further research within the framework of the Ural Carbon program; the article also emphasizes the need to solve environmental problems such as greenhouse gas emissions into the atmosphere, the destruction of soil cover resulting in its fertility decrease. The necessity of monitoring the soil cover state is described on the example of one of the five test sites laid in the fields of the educational and experimental farm of the Ural State Agrarian University.

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Section: Introductionmentioning

confidence: 99%

Agroecological monitoring of soils in the educational and experimental farm of the Ural State Agrarian University

Vashukevich

Gusev

Varnina

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Ключевые слова: морфологическое строение, гранулометрический состав, содержание гумуса, запасы гумуса, сумма поглощенных оснований, агрочерноземы. практических подходов к оптимизации ее свойств и признаков [10,11].…”

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Features of the Structure of the Soil Cover of the Northern Part of the Aktay-Shentala Landscape Low - Lying Area

Gaffarova

Belyaev

2023

Agrobiotechnologies and Digital Farming

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The results of the analysis of materials of a large-scale soil and agrochemical survey, morphological structure and properties of representatives of forest-steppe soils of the northern part of the Aktay-Shentalinsky landscape lowland region of the Republic of Tatarstan are shown. The territory is a poorly divided polygenetic plain with absolute heights of 140-150 m. The bedrock deposits have sandy-loamy layers of the Neogene and Pleistocene, overlain by cloaks of Quaternary deluvial loams, up to 20-21 m thick. The soil cover is dominated by leached medium–sized chernozems, which is 52.6% of the area, typical low–power and medium-sized chernozems - 39.6%, podzolized medium-sized chernozems - 2.7%, gray forest – 4.8%. The humus content in the agrogenic horizon of typical chernozems is average – 4.2-5.2%, and in leached chernozems ranges from 4.6% in a slightly washed analogue to 5.4% in full-profile representatives, where the humus content gradually decreases to the soil-forming rock. The potential reserves of humus of the studied subtypes of chernozems according to typical sections are in the range from 230 t/ha to 462 t/ha. According to the materials of the agrochemical survey for 1972-2021, the dynamics of the content of mobile forms of phosphorus in the arable horizon ranged from 103 mg/kg to 158 mg/kg. The weighted average amount of mobile potassium gradually decreased from 140 mg/kg to 101 mg/kg of soil. The actual yield of spring wheat and the dynamics of the content of mobile forms of potassium over the years of observation have a reliable correlation between each other. The obtained regression equations can be used to predict the yield of spring wheat in a given area. According to the results obtained, for each hectare of arable land for 51 years, about 149.9 kg of phosphorus was received with organic and mineral fertilizers, and since it is sedentary and difficult to dissolve, this led to its accumulation in the soils of the territory. The potassium balance is negative and amounted to -775.9 kg.

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Composition and Properties of Agrodern-Podzolic Soils of the Pre-Ural Province of the Forest-Steppe Zone

Gaffarova

Ahrarova

Belyaev³

2022

Agrobiotechnologies and Digital Farming

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The paper presents the results of the analysis of materials of a large-scale soil and agrochemical survey, morphological structure and properties of agrodern-podzolic soils of the Mamadysh municipal district of the Republic of Tatarstan located in the northern part of the Pre-Ural province of the forest-steppe zone. Statistical parameters of sod-medium podzolic soils accurately record the patterns of profile distribution of properties identified during the analysis of individual analytical information. Indicators of dynamic and stable properties of agrodernov-weakly podzolic heavy loamy soils are below their optimal parameters necessary for modern agriculture. Accordingly, they will be limiting factors in achieving the potential determined by the moisture availability of the territory. Agrodernovo-podzolic soils of the district in a layer of 0-20 cm on average contain 55.4 t/ha of humus reserves, in a half–meter thick – 81.1 t/ha, in a meter layer - 111.0 t/ha and 51.6; 79.3; 103.2 t/ha, respectively, in a slightly washed taxon. The degree of availability of mobile phosphorus varies according to the rounds of agrochemical examination within the limits of medium and high content. In the dynamics of potassium in the soils of the district, there is an increased content in all rounds of the agrochemical survey with a positive trend in recent years. The preservation of areas with an acidic reaction of the environment, despite the increase in liming volumes, was facilitated by erosion processes, deepening of the arable horizon, as well as the use of physiologically acidic mineral fertilizers. The actual yield of winter rye, depending on the year, has a range of fluctuations from 0.5 to 3.2 t/ha, with an average value of 2.49 t/ha and a coefficient of variation of 44.6%. Time series with the content of mobile phosphorus and potassium in soils and the yield of winter rye positively correlate with a correlation coefficient of 0.44 (mobile potassium) and 0.63 (mobile phosphorus). A reliable correlation was obtained between them. The obtained regression equations can be used to predict the yield of winter rye in the district. Soils of this type require the introduction of high doses of fertilizers and bringing the humus content of the arable horizon to its optimal values.

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Dynamics of Humus Reserves and Forecast of Carbon-Investing Potential of Zonal Soils of the Republic of Tatarstan

Cited by 4 publications

References 10 publications

Agroecological monitoring of soils in the educational and experimental farm of the Ural State Agrarian University

Agroecological monitoring of soils in the educational and experimental farm of the Ural State Agrarian University

Features of the Structure of the Soil Cover of the Northern Part of the Aktay-Shentala Landscape Low - Lying Area

Composition and Properties of Agrodern-Podzolic Soils of the Pre-Ural Province of the Forest-Steppe Zone

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