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

Khokhlova, Olga; Chendev, Yu. G.; Myakshina, T. N.; Alexandrovskiy, A.L.; Хохлов, А. А.

doi:10.1016/j.quaint.2014.10.012

Cited by 17 publications

(12 citation statements)

References 22 publications

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“…In our opinion, this mechanism, along with the activity of macro-and mesofauna, is the major factor of the enrichment of the soil under the plow horizon with humus substances in the recently cultivated chernozems. We argue that the intensity of the zoogenic activity in the plowed chernozems and its impact on the soil properties were underestimated in the earlier studies [43].…”

Section: Resultsmentioning

confidence: 61%

Agrogenic evolution of automorphic chernozems in the forest-steppe zone (Belgorod oblast)

2017

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Abstract⎯Agrochronosequences of chernozems with different periods of their use in rainfed farming with application of traditional technologies have been studied in a typical forest-steppe area in Belgorod oblast. Certain stages in the development of these soils during more than two centuries of their agricultural use have been identified. These stages are related to changes in the intensity and direction of soil forming processes, such as soil compaction, soil aggregation, dehumification of the upper horizons, calcification of the soil profiles, argillization, etc. A significant impact on the soil changes during the agrogenic evolution of chernozems is exerted by the digging activity of burrowers, which is especially pronounced in the old-arable chernozems.Keywords: chernozems, soil agrochronosequences, tillage, forest-steppe, stadial specificity of the agrogenic evolution, multiple study methods DOI: 10.1134/S1064229317050040 Kozlovskii [17], and many other scientists. These studies allowed us to gain a better understanding of the essence of soil forming processes in plowed chernozems and their changes with time and to develop a set of methods aimed at conservation and reproduction of these soils as the most valuable nature resource of Russia. However, the diversity of the existing information on transformation of chernozems under the impact of tillage poses new problems related to the genesis of the new soil properties and processes in plowed chernozems. The changes in the morphogenetic character of plowed chernozems and in the intensity of a number of soil processes (in particular, dehumification) in them should be specially analyzed. It should be noted that, in some studies, the most important problem of the loss of organic matter from chernozems under the impact of tillage is considered not quite correctly: only the content of humus in the plow horizons is analyzed, whereas changes in the bulk density of the soils are ignored.

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Section: Resultsmentioning

confidence: 61%

Agrogenic evolution of automorphic chernozems in the forest-steppe zone (Belgorod oblast)

2017

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“…На сьогодні основні дослідження присвячені встановленню особливостей структурного складу чорноземів, які використовуються в сільському господарстві (Medvedev, 2008;Khokhlova et al, 2015), в той же час малодослідженим залишається структурно-агрегатний склад чорноземів під лісовою рослинністю. Виходячи з цього, метою нашої роботи є встановлення особливостей структурного складу чорноземів лісових, які сформувалися в умовах байрачних дібров степової зони України.…”

Section: вступunclassified

Features of structural-aggregate condition of forest chernozems in Hlyboky ravine

Gorban

Strygina

Mandrygelia

2016

Fundam. Appl. Soil Sci.

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As it is known, the structure of the soil, as well as the qualitative characteristics of its units (size, water resistance, mechanical stability) is largely dependent on the granulometric structure, the availability of sufficient organic matter, vigorous activity of soil microorganisms and mesofauna, development of root systems of plants. The formation of soil structure is a complex physical-chemical process, which results in the adhesion of soil particle-size fractions of humic substances with a corresponding impact of absorbed cations. Therefore, the shape of the structural units can serve as a diagnostic feature that reflects the genetic features and the natural fertility of the soil. Soil structure is a dynamic property and may be changed under the influence of agricultural use and environmental factors. The stability of soils to human impacts depends on their genetic characteristics, factors and soil conditions. In particular, the greatest impact on the structural state of the soil creates a progressive dehumufication. At present the main features of the research focuses on the establishment of a structural condition of chernozems, used in agriculture, while at the same time, structural and aggregate state of chernozems under forest vegetation remains little explored. Accordingly, the aim of our work is to establish the characteristics of the structural condition of forest chernozems that formed in a ravine oak steppe zone of Ukraine. The object of study is based on the soil of Hlyboky Ravine, which is located near the village Andriyivka (Novomoskovsk district, Dnipropetrovsk region). Soil samples were collected in a 5 test areas: the first test area is located on the steppe virgin soil between the field and marge a northern slope, the second – in the middle third of the northern slope, the third – on the flat areas of the thalweg, the fourth – in the middle third of the slope of southern exposure, the fifth – on virgin steppe between the field and marge slope of southern exposure. The research was carried out by sieve method in the modification of N. I. Savvinov. As a result of the investigations it was found that the optimal aggregate state characterized by the surface horizons of the soils, which are dominated by the fraction size of 2–1 and 3–2 mm. The maximum content of agronomically valuable fractions revealed in the horizon H1el southern exposure, in which the structural factor is 30.2 %. The most favorable conditions for the formation of water-resistant structures are typical for the northern and southern exposure of the Ravine. The least favorable conditions for the formation of water-resistant aggregates different northern edge. Minimum variability in terms of structure coefficient among the studied soils characteristic of the soil and the northern edge of northern exposure, and the maximum – for the southern exposure of soil. The most important soil factors which determine the peculiarities of structural-aggregate state of the soils are the eluvial-illuvial processes. Forest chernozems have a very good structural and aggregate state.

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“…Chemical and physical characteristics of Chernozems are ideal for growing even the most demanding crops (Hladky, Brtnicky, Elbl, Kintl, & Kynicky, 2018;Klimek-Kopyra et al, 2015). However, numerous data shows an intensive reduction of the Chernozem areas and a noticeable decrease in the thickness of the fertile layer (Chendev, Sauer, Ramirez, & Burras, 2015;Khmelev & Tanasienko, 2009; Khokhlova, Chendev, Myakshina, Alexandrovskiy, & Khokhlov, 2015;Liu et al, 2010Liu et al, , 2012Yang, Zhang, Deng, & Fang, 2003). Additionally, researchers note a decrease in the content of organic components and mineral nutrients, including phosphorus and nitrogen (Ouyang et al, 2013;Spychalski, Grzebisz, Diatta, & Kostarev, 2018).…”

Section: Introductionmentioning

confidence: 99%

Interpolyelectrolyte complexes as effective structure‐forming agents for Chernozem soil

et al. 2020

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Chernozems or mollisols/black soils are 'reference soils' with a high content of organic matter, which ensures a high level of crop yield. In the article, we describe the structural characteristics of a typical medium‐thick Chernozem taken from Kursk region and their improvement via treatment by a 1 wt% aqueous solution/suspension of interpolyelectrolyte complex (IPEC), a product of electrostatic interaction between anionic potassium humates and cationic poly(diallyldimethylammonium chloride). The native Chernozem and polymer‐treated chernozem were characterized by laser diffraction, dry and wet sieving methods, transmission electron microscopy, soil washoff in a hydraulic erosion tray, gravimetry, visual control, and vegetation miniaturization in Petri dishes with the following main conclusions: (a) Deposition of a positively charged IPEC over the Chernozem sample led to an increase in a total amount of agronomically valuable 0.25–1 mm aggregates up to 28% in comparison with a 3% content of aggregates in the native Chernozem. (b) An average diameter of the air‐dry aggregates, treated by a cationic IPEC, was of 5.5 mm (cf. with 2.5 mm for the untreated). (c) An average diameter of the IPEC‐treated water‐resistant aggregates was of 2.1 mm (cf. with 0.5 for the untreated). (d) The Chernozem pretreated by the cationic IPEC showed a minimum removal of soil during several cycles of rewatering/drying. (e) All IPEC formulations, stimulated the growth of plants. The results are of interest for preparing low‐toxic polymer formulations capable of effective stabilizing fertile Chernozem soils.

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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

Cited by 17 publications

References 22 publications

Agrogenic evolution of automorphic chernozems in the forest-steppe zone (Belgorod oblast)

Agrogenic evolution of automorphic chernozems in the forest-steppe zone (Belgorod oblast)

Features of structural-aggregate condition of forest chernozems in Hlyboky ravine

Interpolyelectrolyte complexes as effective structure‐forming agents for Chernozem soil

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