The humus formation and humus in forest-steppe and steppe chernozems of the southern Cisural region

Rusanov, A. M.; Anilova, L. V.

doi:10.1134/s1064229309100044

Cited by 9 publications

(5 citation statements)

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“…The depletion of the plough-layer by clay fraction in the zonal row from the northern sub-types of Chernozems to Kastanozems has been noted by various authors (Brook, 1979;Shcheglov, 1999;Akhtyrtsev and Akhtyrtsev, 2002;Kozlowskiy, 2003 and others). Removal of clay as a result of agro-lessivage occurs in the subsurface part of the soil profile and is implemented in a layer of "sole shoe" (Akhtyrtsev and Akhtyrtsev, 2002;Kozlowskiy, 2003). However, according to other observations in arable steppe Chernozems, the balance of clay fraction in relation to the parent rock is moved in the negative direction for the whole soil profile (Shcheglov, 1999).…”

Section: Introductionmentioning

confidence: 75%

“…However, the authors' opinions regarding the intensity of dehumification in arable Chernozems diverge significantly. Together with the view of the rapid, almost catastrophic dehumification of arable Chernozems in the 20th century (Sidorov et al, 1983;Zonn and Travleev, 1989), there are ideas that the loss of humus in arable soils within the steppe and forest-steppe zones is grossly exaggerated (Afanasyeva, 1964;Kokovina and Lebedeva, 1990;Orlov et al, 1996;Akhtyrtsev and Akhtyrtsev, 2002). There is no consensus on the question of the duration of dehumification in arable Chernozems.…”

Section: Introductionmentioning

confidence: 99%

“…There is no consensus on the question of the duration of dehumification in arable Chernozems. Some researchers (Afanasyeva, 1966;Ponomareva, 1974;Akhtyrtsev and Akhtyrtsev, 2002) think that the loss of humus was very intense in the first decades after the beginning of the ploughing and in the long-term cultivated soils it is completely stopped. Other researchers believe that the dehumification continues over centuries (Aderikhin, 1964;Gedymin and Pobedintseva, 1964).…”

Section: Introductionmentioning

confidence: 99%

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Evolution of Chernozems in the southern forest-steppe of the Central Russian upland under long-term cultivation examined in the agro-chronosequences

Khokhlova

Chendev²,

Myakshina

et al. 2015

Quaternary International

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Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evolution of Chernozems in the southern forest-steppe of the Central Russian upland under long-term cultivation examined in the agro-chronosequences

Khokhlova

Chendev²,

Myakshina

et al. 2015

Quaternary International

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“…On the other hand, soil Eh and pH are some of the main factors regulating the speed and intensity of humification processes (Reddy et al 1986;Rusanov and Anilova 2009 , fermentation processes take place in which organic molecules are utilized as electron acceptors (Reddy et al 1986;Ugwuegbu et al 2001).…”

Section: Soil Eh and Ph And Soil Organic Mattermentioning

confidence: 99%

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

2012

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Background Oxidation-reduction and acid-base reactions are essential for the maintenance of all living organisms. However, redox potential (Eh) has received little attention in agronomy, unlike pH, which is regarded as a master variable. Agronomists are probably depriving themselves of a key factor in crop and soil science which could be a useful integrative tool. Scope This paper reviews the existing literature on Eh in various disciplines connected to agronomy, whether associated or not with pH, and then integrates this knowledge within a composite framework. Conclusions This transdisciplinary review offers evidence that Eh and pH are respectively and jointly major drivers of soil/plant/microorganism systems. Information on the roles of Eh and pH in plant and microorganism physiology and in soil genesis converges to form an operational framework for further studies of soil/plant/microorganism functioning. This framework is based on the hypothesis that plants physiologically function within a specific internal Eh-pH range and that, along with microorganisms, they alter Eh and pH in the rhizosphere to ensure homeostasis at the cell level. This new perspective could help in bridging several disciplines related to agronomy, and across micro and macro-scales. It should help to improve cropping systems design and management, in conventional, organic, and conservation agriculture.

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“…The HAs of the soils from the 20-30 cm layer had higher values of this parameter than did the HA molecules of the soils from the 10-20 cm layer (P=0.003, Table 2). According to Rusanov and Anilova (2009), a lower ratio corresponds to a higher content of hydrophobic humic components. Milanovskii (2000) and Milanovskii and Shein (2002) hold that a ratio of hydrophilic to hydrophobic fractions of close to 0.5-0.6 indicates a good balance of these fractions.…”

Section: Properties Of Humic Acidsmentioning

confidence: 99%

Humic acids in permanent grasslands of the Czersk Meadows Complex, north Poland

Banach-Szott¹,

Dziamski²

2022

Soil Sci. Ann.

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The research objective was to determine basic soil properties and the stability of humic acids (HAs) in individual layers of the A horizon of meadow soils. Soil samples were collected from the unique Czersk Meadow Complex in north Poland, 25 years after the end of "slope-and-fl ooding" irrigation that had lasted for 150 years. It is a continuation of research being carried out on the Czersk Meadows. In the previous studies (Banach-Szott et al. 2021a), continuously irrigated soils were analysed. The total organic carbon content (TOC), total nitrogen content (Nt) and grain size composition were determined in soil samples. Humic acids were extracted by Schnitzer method and analysed for: elemental composition, spectrometric parameters in the UV-VIS range and hydrophilic and hydrophobic properties. The tested soils consisted largely of sand fraction, with only small amounts of clay. The TOC, Nt and TOC/Nt ratio values all depended on soil sampling depth and distance from irrigation ditch. The TOC, Nt and TOC/Nt ratio were all highest for soils collected from a depth of 0-10 cm and for those taken 25 m from the irrigation ditch. The research revealed that the HA molecules of soils collected from a depth of 0-10 cm had higher H/C ratios and spectrometric parameters and lower values of the ω parameter and HIL/HOB ratio than those from deeper layers. This indicates that the degree of maturity of HAs increases with depth. On the basis of the obtained atomic ratios (H/C, O/C, O/H), ω parameter and spectrometric properties (A 2/6 , A 4/6 and ΔlogK), the degree of maturity for HAs molecules was highest in the soil samples taken furthest from the irrigation ditch. The results indicate that relatively high-stability HAs were formed by the processes of transformation of the organic matter of the mineral meadow soils.

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The humus formation and humus in forest-steppe and steppe chernozems of the southern Cisural region

Cited by 9 publications

References 0 publications

Evolution of Chernozems in the southern forest-steppe of the Central Russian upland under long-term cultivation examined in the agro-chronosequences

Evolution of Chernozems in the southern forest-steppe of the Central Russian upland under long-term cultivation examined in the agro-chronosequences

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

Humic acids in permanent grasslands of the Czersk Meadows Complex, north Poland

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