Fractionation of Soil Organic Matter into Labile and Stable Fractions

Kopecký, Marek; Kolář, Ladislav; Perná, Kristýna; Váchalová, Radka; Mráz, Petr; Konvalina, Petr; Murindangabo, Yves Theoneste; Ghorbani, Mohammad; Menšík, Ladislav; Dumbrovský, Miroslav

doi:10.3390/agronomy12010073

Cited by 14 publications

(19 citation statements)

References 48 publications

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“…To understand the quality and decomposition rates of labile soil organic matter fractions in different land use types, it was essential to study the kinetics of soil carbon oxidation [ 8 , 22 ]. In this study, the alternative fallow and conventional farming land exhibited higher oxidation compared to other land use types.…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, other analyses were performed following specific protocols outlined below. Each analysis was repeated three times for each individual sample, ensuring reliable and accurate results [ 7 , 8 , 18 ].…”

Section: Methodsmentioning

confidence: 99%

“…The evaluation of the labile fraction (C L ) and stable fractions (C S ) of SOM was conducted separately to assess both their quantity and quality. The quality of the C L was determined based on its oxidation speed constant (k), which provides insights into its decomposition rate [ 8 , 22 ]. On the other hand, the quality of the C S was expressed in terms of stable fraction Stability Ratio (SR), which offer information about its proportion and contribution to the long-term total organic matter.…”

Section: Methodsmentioning

confidence: 99%

“…Soil organic matter can be categorized into different fractions based on their levels of stability or lability. The labile fraction (C L ) is particularly noteworthy due to its high turnover rate and vulnerability to management systems and erosion [ 8 ]. It plays a crucial role in determining the nutrient regime of a specific soil and provides essential nutrients and substrates for soil microorganisms [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

Murindangabo,

Kopecký,

Hoang

et al. 2023

Carbon Balance Manage

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Background Land use and land cover changes have a significant impact on the dynamics of soil organic matter (SOM) and its fractions, as well as on overall soil health. This study conducted in Bharatpur Catchment, Chitwan District, Nepal, aimed to assess and quantify variations in total soil organic matter (TSOMC), labile organic matter fraction (CL), stable organic matter fraction (CS), stability ratio (SR), and carbon management index (CMI) across seven land use types: pastureland, forestland, fruit orchards, small-scale conventional agricultural land, large-scale conventional agricultural land, large-scale alternative fallow and conventional agricultural land, and organic farming agricultural land. The study also explored the potential use of the Carbon Management Index (CMI) and stability ratio (SR) as indicators of soil degradation or improvement in response to land use changes. Results The findings revealed significant differences in mean values of TSOMC, CL, and CS among the different land use types. Forestland and organic farming exhibited significantly higher TSOMC (3.24%, 3.12%) compared to fruit orchard lands (2.62%), small scale conventional farming (2.22%), alternative fallow and conventional farming (2.06%), large scale conventional farming (1.84%) and pastureland (1.20%). Organic farming and Forestland also had significantly higher CL (1.85%, 1.84%) and CS (1.27%, 1.39%) compared to all other land use types. Forest and organic farming lands showed higher CMI values, while pastures and forests exhibited higher SR values compared to the rest of the land use types. Conclusions This study highlights the influence of various land use types on soil organic matter pools and demonstrates the potential of CMI and SR as indicators for assessing soil degradation or improvement in response to land use and land cover changes.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

Murindangabo,

Kopecký,

Hoang

et al. 2023

Carbon Balance Manage

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“…Some mobile organic compounds are involved in further synthesis processes to form stable humus (Haynes, 2005). The amount of water-soluble and labile humus substances varies during the growing season of agricultural crops (Kopecký et al, 2022;Bongiorno et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of Fertiliser on Changes in Labile and Water-Soluble Forms of Humus in Short-Term Rotations

STASIV¹,

Kachmar²,

Vavrynovych³

et al. 2022

Scientific Horizons

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Mobile (labile and water-soluble) forms of humus are one of the basic components of effective soil fertility and a precondition for high productivity of crop rotations. As a result of fermentation, these forms of humus are mineralised and take part in plant nutrition, and some of them, being included in mobilisation processes, transition into stable humus substances. Therefore, it is important to investigate agrotechnological factors for managing their dynamics and redistribution in the soil environment during the growing season of agricultural crops. The purpose of the study: to investigate the effect of complex application of mineral and organic (conventional and alternative) fertilisers on the change of water-soluble and labile forms of humus during the growing season of agricultural crops grown in short-term rotations. The following research methods were used in this study: field, laboratory-analytical, computational-comparative, mathematicalstatistical. Higher level of labile accumulation (359.59 mg kg-1 of soil) and water-soluble (11.69 mg kg-1 of soil) humus forms under winter wheat crops occur when the predecessor of the crop in the crop rotation is meadow clover. The application of N60P90K90 specifically for winter wheat and 40 t/ha of manure in the conventional fertilisation system of grain-grass crop rotation contributes to the formation of 529.07 and 20.20 mg kg-1 of soil of the organic substances under study. The application of N120P100K100 and 40 t/ha of manure for corn for grain yields 567.42 and 22.55 mg kg-1 of soil, and N90P90K90 and 40 t/ha of manure for potatoes yields 543.66 and 21.75 mg kg-1 of mobile compounds humus. The obtained research results can serve as a basis for the development of highly efficient environmentally friendly farming systems and can be used for further scientific research on the development of ways and directions for managing humus-forming processes in the soil environment

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Management of Soil Organic Carbon

Panda

2022

SpringerBriefs in Molecular Science

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Fractionation of Soil Organic Matter into Labile and Stable Fractions

Cited by 14 publications

References 48 publications

Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

Effect of Fertiliser on Changes in Labile and Water-Soluble Forms of Humus in Short-Term Rotations

Management of Soil Organic Carbon

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