Chernozem soils of Novosibirsk oblast: Problems of their rational use and preservation

Khmelev, V. A.; Tanasienko, A. A.

doi:10.1134/s1995425509060228

Cited by 6 publications

(3 citation statements)

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“…There is data that mineral fertilizers increase the yield, and, therefore, the biogenic removal of alkaline earth metal cations, therefore strengthening the process of decalcification, which is expressed in an increase in the pH of the salt extract and a decrease in the amount of exchange bases [14]. Our previous studies have demonstrated that the annual use of nitrogen fertilizers can change the qualitative composition of humus towards the synthesis of fulvic acids, which have a pronounced acidifying effect [15]. In our opinion, the mechanism of acidification by increasing the biogenic removal of calcium and magnesium and enhancing the synthesis of fulvic acids is most topical for gray forest soils of the sub-boreal zone of the Trans-Urals.…”

Section: Resultsmentioning

confidence: 99%

Dynamics of agrochemical properties of gray forest soil of the Western Siberia’s sub-boreal zone affected by a long-term agricultural exploitation

Eremin

Renev

2021

BIO Web Conf.

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We studied the changes in the agrochemical properties of the gray forest soil in the territory of Western Siberia’s sub-boreal zone affected by the long-term use of the organomineral fertilizers in the grain-follow-row crop rotation and in its absence. We used virgin areas of gray forest soil situated in the immediate proximity to the fields as a control. The anthropogenic changes of morphological features throughout the gray forest soil profile were identified based on the use of fixed permanent plots laid down in 1960. This paper describes the dynamics of the actual, exchange, and hydrolytic acidity as well as the amount of absorbed bases, together with the base exchange capacity and the degree of base saturation. The study of arable gray forest soil for the period 1960-2020 was performed. This provided an opportunity to identify the causes of its chemical degradation in the sub-boreal zone of the Trans-Urals under the conditions of a plant residue shortage. The systematic use of mineral fertilizers affects the base exchange capacity and triggers an increase in the arable layer’s acidity. The use of an organic fertilizer system stabilizes the chemical properties of gray forest soil.

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Section: Resultsmentioning

confidence: 99%

Dynamics of agrochemical properties of gray forest soil of the Western Siberia’s sub-boreal zone affected by a long-term agricultural exploitation

Eremin

Renev

2021

BIO Web Conf.

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“…The analysis of the literature data showed significant contradictions in the mass of plant residues of agricultural crops [9,10]. Their quantity depends on the varietal and biological characteristics of plants; cultivation technology and soil and climatic conditions [11,12].…”

Section: Introductionmentioning

confidence: 99%

The influence of mineral fertilizers on the mass of plant-root residues of grain crops on chernozem soils of the Western Siberia

Eremina

2021

BIO Web Conf.

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The influence of various levels of mineral nutrition on the accumulation of plant-root residues of spring wheat and oats in the conditions of the forest-steppe zone of Western Siberia is studied. The natural agricultural background of leached chernozem was taken as a control. The research was carried out at the station of the Department of Soil Science and Agrochemistry of the State Agrarian University of the Northern Trans-Urals. In the experiment, various doses of mineral fertilizers were used, ensuring the yield of grain crops from 3.0 to 6.0 t/ha. It was found that the mass of plant-root residues of spring wheat and oats has no significant differences and depends on the level of mineral nutrition. On the natural agricultural background, the mass of plant-root residues is 3.24-3.88 t/ha. Fertilization increases the yield of grain crops to 6.0 t/ha, and also increases the amount of plant-root residues: spring wheat - 4.47; oats – 6.04 t/ha. Increasing the doses of mineral fertilizers reduces the ratio of yield to the mass of plant-root residues from 1:1.6 to 1:1.10 units. It was found that almost half of the root system of spring wheat and oats is located in a layer of 0-10 cm, while the share of roots in a layer of 30-40 cm accounts for no more than 16% of the mass.

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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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Chernozem soils of Novosibirsk oblast: Problems of their rational use and preservation

Cited by 6 publications

References 0 publications

Dynamics of agrochemical properties of gray forest soil of the Western Siberia’s sub-boreal zone affected by a long-term agricultural exploitation

Dynamics of agrochemical properties of gray forest soil of the Western Siberia’s sub-boreal zone affected by a long-term agricultural exploitation

The influence of mineral fertilizers on the mass of plant-root residues of grain crops on chernozem soils of the Western Siberia

Interpolyelectrolyte complexes as effective structure‐forming agents for Chernozem soil

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