1.5.19. Почвоведение

The article is devoted to Pavel Alexandrovich Sadimenko, whose 100th anniversary was celebrated in July this year. A prominent soil scientist whose scientific interests were concentrated in the field of land reclamation and soil physics, Professor P. A. Sadimenko also paid great attention to the study of the trace element composition of soils.

The yield of soybean varieties Kazachka erosion-dangerous slope depending on the method of basic soil treatment and mineral fertilizers Rychkova M. I. Mishchenko A.V. Federal Rostov agricultural research center, Rassvet village, Russia, E-mail: rychkova-1980@list.ru Annotation: The results of three-year field studies on the influence of methods of basic tillage and mineral fertilizers on the yield of soybean varieties Kazachka, obtained in the conditions of erosion-dangerous slope of ordinary carbonate chernozems (according  WRB, 2014, – Haplic Chernozem) of the Rostov region. Studies have found that in the conditions of erosion-dangerous slope an effective way of basic soil treatment in the cultivation of soybean varieties Kazachka is chisel and the introduction of an increased level of mineral fertilizers norm N84P30K48 (162 kg d. V. per 1 ha of crop area). At the same time, the highest indicators of productive moisture reserves in the soil and yield increase are formed-0.38 t/ha. Chiseling contributed to an increase in the payback of 1 kg of fertilizers by an increase in yield by 0.13-0.35 kg/kg in comparison with plowing.

The theoretical basis for the use of humic preparations on irrigated light serozems The considered materials testify that the development of the questions of the biochemistry of humus and humus substances, the use of biohumus in agriculture of irrigated light serozems lags behind the general state of this section of soil science. Studies of humus in soils and biohumus will provide additional opportunities for theoretical and practical developments that allow you to solve the addition and the necessary issues of agricultural practice in the region.

Resource-saving elements of soybean cultivation technology on the slopes of the Rostov region Resource-saving elements of soybean cultivation technology on the slopes of the Rostov region Rychkova M.I., Gaeva E.A., Mishchenko A.V. Federal Rostov Agricultural Research Center, Rassvet. Е-mail: emmaksay@inbox.ru. Abstract. The article presents the actual results of research on the development of resource-saving elements of soybean cultivation technology, providing moisture saving, high productivity and soil protection from erosion. Two-year studies were carried out on the erosion-dangerous slope of the South-Eastern exposure of the Bolshoy Log beam, Aksai district of the Rostov region in the system of contour-landscape organization of the territory in 2017-2018. Studied two methods of primary tillage – otvalnuyu adopted for monitoring and chisel. Chisel tillage in the cultivation of soybean was performed by chisel plow. Dump processing was carried out with a plow blade. The mineral nutrition system included three backgrounds: natural fertility recommended by zonal systems and increased by half. It is established that to prevent possible erosion it is recommended to cultivate soybeans in the system of contour-band placement of fields. It is shown that the payback of the crop fertilizers on the version with the chisel treatment of the soil is higher than on the dump. Increasing the dose of fertilizer in half reduces the payback of fertilizers by 18.9-19.4 %. It is revealed that the approved soil protection (chisel) tillage can significantly reduce the erosion processes – soil flushing by 22.9%, runoff – 10.0%, the cost of fuel and lubricants-18.8%, increase the accumulation of reserves of productive moisture in the soil with a more economical expenditure, yield – by 30.2 – 32.1%, conditional net income-up to 6.6 thousand rubles /ha, profitability-by 42.1%, recoupment of direct costs yield of 1.4 rubles per ruble in comparison with the same indicators at the dump plowing.

Methods of soil fertility preservation on eroded slopes of Rostov region Methods of soil fertility preservation on eroded slopes of Rostov region Gaevaia Е.А. Federal Rostov Agricultural Research Center, Rassvet. Е-mail: emmaksay@inbox.ru. Abstrac: Тhe Studies were carried out in a multifactorial stationary experiment in 1991-2018 years. the Experiment is located on the slope of the beam of the Big Log of Aksai district of Rostov region. The soil of the experimental site is ordinary heavy loamy Chernozem on loess-like loam, medium-eroded. In the experiment studied two crop rotation zernopererabotki (I) and sertralineprograms (II), and three levels of organic-mineral system of fertilizers («0» – natural fertility; «1» – cattle manure 5 t + N46P24K30 and «2» – cattle manure 8 t + N84P30K48 1 hectare). The aim of the study was to study the balance of humus depending on the design of crop rotations located on the eroded slopes of the Rostov region, to identify ways to preserve soil fertility at the initial level and increase it. As a result of the research, the amount of washed soil was determined. The importance of plant residues in the accumulation of humus is shown. It is established that the intensive use of agricultural land in the Rostov region without fertilizer leads to a reduction in the humus content in the soil. The role of perennial grasses in reducing soil flushing by 35.6% was studied. It is shown that the long-term use of organic fertilizers in crop rotations at a dose of 5 tons of cattle manure and N46P24K30, as well as the introduction of 20% of perennial in the crop rotation allows to maintain a positive balance of humus at the level of (+35 kg/ha) in the grain-grass crop rotation. Increasing the dose of fertilizer to 8 tons of cattle manure and N84P30K48 contributes to the accumulation of humus up to (+100 kg/ha) in the grain crop rotation. The possibility of replacing organic fertilizers with 1-2 t/ha of wheat straw using compensatory doses of nitrogen fertilizers is shown.

The ameliorative condition of the soil spread around the Kattakurgan reservoir and its changes The ameliorative condition of the soil spread around the Kattakurgan reservoir and its changes Abdullaev S.A.1, Jabbarov Z.A.1, Tursunulova A.1, Okolelova A.A.2, Kholdorov Sh.M.3 1National University of Uzbekistan, Tashkent, Uzbekistan, zafarjonjabbarov@gmail.com 2Volgograd State Technical University, Volgograd, Russia, allaokol@mail.ru 3Tokyo University of Agriculture and Technology – TUAT, Tokyo, Japan, sh.m.xoldorov@gmail.com Abstract: Changes in the physicomechanical properties and ameliorative state of the soil were studied using the Kattakurgan reservoir as an example; the degree of fossil, the density of irrigated lands, the dynamics of the groundwater level by years, the ameliorative state and the location of salts by layers were studied. According to the results, the indicator of soils with an inadequate ameliorative state increased from 4.22% to 5.58%. It was justified that the level of groundwater salinity is mainly between 0-1 g / l and 1-3 g / l. It is scientifically substantiated that the main effect of the Kattakurgan reservoir on soils is formed by the accumulation of salts, the effect on the physicomechanical properties is relatively small.

Biotechnologies of oil-polluted soil cleaning of the apsheron peninsula and integral indicator of their biological condition Nadjafova Samira I., Gasanova Zulfiya P., Ismaylov Nariman M. Institute of Microbiology, National Academy of Sciences of Azerbaijan; nadjafovas@yahoo.com Abstract: Studies of technologically disturbed soils of the Absheron Peninsula were carried out through the integral indicator of the soil biological state (IPBS) in accordance with the scores of the most important informative properties of their biological state: enzymatic activity, hydrocarbon-oxidizing microorganism numbers, seed ratio of total hydrocarbon-oxidizing microorganisms to the total number, phytotoxicity, allowing to evaluate the potential of self-cleaning ability of landscapes and choose the way of their rehabilitation. Processing the results of the experiments showed that there is a negative relationship between the indicators of the degree of anthropogenic load with soil biogenicity: r = -0.75 ± 0.04. The system analysis of biological indicators and IPBS calculated on their basis of technologically disturbed soils of the Absheron Peninsula in the NGDU territories allowed them to be ranked according to the degree of resistance to anthropogenic pressure and ability to self-purification: Karadag district> Sabunchu and Khazar districts> Surakhani and Binagadi districts> Sabail district As a method of biological remediation, a biological preparation was used based on excess activated sludge from the Gosaninsky aerator station. The results of laboratory model studies have shown that the introduction of a biological product has a positive effect on the biological properties of the soil at both the microbiological and enzymatic levels.

The change of absorbed bases composition in desert soils as an indicator of their evolution  The change of absorbed bases composition in desert soils as an indicator of their evolutionYuldashev G.1, Isagaliev M.T.1, Bezuglova O.S.2 1Fergana State University, Republic of Uzbekistan 2 Southern Federal University, Rostov-on-Don, Russia   The research is aimed to clarify the role of the capacity of the soil absorbing complex and the composition of cations in the evolutionary transformations of the irrigated desert soils. The object of research comprised the soils of large regions of oasis agriculture of the lower reaches of the Amu Darya and Central Fergana, where irrigated meadow, floodplain alluvial and irrigated meadow, oasis soils are distributed respectively. Considering the alluvial nature of the deposits on which the studied soils are formed, they can be attributed to the reference soil group Fluvisols (Fluvisols). Absorbed bases were determined by the Pfeffer method in Kruger modification. It was established that the studied soils are characterized by certain values ??of the absorption capacity and the ratio of cations in the composition of the soil absorbing complex, depending on the duration of irrigation and a combination of soil formation factors. At the same time, the average content of each cation in the composition of the soil absorbing complex is relatively stable for the soil. In the process of evolution, which occurs under the influence of agrotechnical and agromeliorative methods of using the soil, these indicators change slowly following the change in the grain size distribution. In general, the amount of absorbed bases increases with the increase in the cultivation of irrigated hydromorphic desert soils. The chemical composition of alluvial and alluvial-proluvial pedogenesis soils also influences the characteristics of soil formation in the desert zone and the specifics of their ameliorative characteristics. According to the content of Ca ++, Mg ++, K +, Na + as part of the soil absorbing complex, the potential capabilities of the soils and the efficiency of land reclamation are determined, measures are being taken to increase the fertility of irrigated soils.

Thermal desorption of petroleum products and heavy metals in soils of the Volgograd–Volzhsky agglomeration Thermal desorption of petroleum products and heavy metals in soils of the Volgograd–Volzhsky agglomeration Kaplya Veronika N., Okolelova Alla A., Korchagina Mariya P. Volgograd state technical University, Volgograd, Russia; veronikazaikina@mail.ru Abstract: Thermal desorption is used to accelerate the extraction of large amounts of high–molecular hydrocarbons (including petroleum products) from the soil. It was carried out under the influence of high temperatures and pressure in the autoclave MLS – 3020 U (SANVO, Japan) at 1.5 atm (122 ° C), and warmed in a dry oven SHS–80–01 at 170 ° C for 40 minutes . Purpose: to study the features of fixing petroleum products and heavy metals in agglomeration soils, changes in their concentration in the soil under the influence of high temperatures and pressure (thermal desorption). This article presents information on the content of petroleum products and heavy metals in light chestnut and alluvial soils of the Volgograd–Volzhsky agglomeration, and for the first time – changes in their content in the soil after thermal desorption. For the first time we used similar conditions for determination of heavy metals in soils. The concentration of petroleum products after thermal desorption in the soil increases by 1.22–1.50 times. The increase in the concentration of petroleum products after thermal desorption occurs due to the fact that a significant part of them, represented by light fractions, evaporates in the first weeks after entering the soil, and heavy fractions are sorbed by the mineral part of the soil, and as a result of desorption are released. The concentration of heavy metals after thermal desorption are almost twice less than their gross forms. We assume that the mobile fractions (acid – and water–soluble) at a given temperature and pressure evaporate, and as a result of desorption elements are released from the complexes.  

Гумусное состояние черноземов Болгарии Filcheva Е.G., Ilieva R. S., Lubenova I., Hristov B., Hristova M.  Abstract. Content, composition and morphology of soil organic matter are important diagnostic indicators which provide valuable information in the study of soils and soil processes. Data for content and composition of soil organic matter from statistical profiles of subtypes of Chernozem are presented in the study.Micromorphological characteristics of studied soils are developed. Micromorphological indicators confirm the identified chemically - humus type and humic acids condensation.    

Оценка основных кинетических параметров каталазы в почве Fariz Mikayilov Department of Soil Science and Nutrition of Plants of Agricultural Faculty of "Igdyr" University, 76000, Igdir, Turkey, fariz.m@igdir.edu.tr Abstract. Numerous studies have been carried out on the kinetics of enzymatic processes in soils in which the kinetic parameters Vmax and KM are determined using the Michaelis-Menten equation. The enzyme activity values for a short period of time from the start of the reaction are usually used as the value of the reaction rate. In contrast to these studies, we used analytical methods to determine the initial rate of the enzymatic reaction. Calculations are made for determining the values of the initial velocity and kinetic parameters of catalase in the soil. The conducted studies show the dependence of the accumulation of the catalase enzymatic reaction products from the incubation time at various concentrations of substrates in the soils of Konya province. It has been shown that the amount of the reaction products grows nonlinearly, moreover it is described by the most accurate and adequate model - a polynomial of the 4th degree. Using this model, the initial velocity values for each substrate concentration were calculated. The curves of the dependence of the initial rate of the catalase reaction in the soil from the substrate concentration for the soils of the Chumra region have a monotonous form. Thus, we were able to improve the accuracy of determining the initial reaction rate and the kinetic parameters Vmax and KM of the enzymatic reaction of hydrogen peroxide decomposition by catalase in real soil conditions.  

Changes in the properties of oil-contaminated soils in the desert zone Changes in the properties of oil-contaminated soils in the desert zone Jabbarov Z.A.1, Abdrakhmanov T.1,Xaidmuxamedova Z.L., Wilkomirsky B.2 1National University of Uzbekistan, Tashkent, Uzbekistan, zafarjonjabbarov@gmail.com  2Volgograd State Technical University, Volgograd, Russia, allaokol@mail.ru 3Jan Kochanowski University in Kielce, Kielce, Poland, bowi@biol.uw.edu.pl    Abstract: The studies examined the state of soil pollution by remoteness from the source of pollution and the soil profile as a result of the activity of five oil fields and one oil and gas enterprise. At the same time, pollution was noted with two types of soil pollutants around oil fields and an oil and gas enterprise. According to the obtained results, it was noted that the degree of soil pollution by sources relative to the background in the gray-brown soils spread around the Kukdmalok oil fields was 10.3 g / kg; in meadow-alluvial soils common around the North Oknazar oil fields - 6.4; in takyr-meadow soils common around UDP “Muborakneftgaz” - 2.80; in gray-brown soils spread around the Uchkyzyl oil fields - 11.2; in takyr soils common around Kakaidi-2.4 oil fields; and in desert sandy soils around the Khovdak oil fields - 82.7 g / kg.  

Metabolomic profiling of soils of chronoseries of podzols of a sand quarry Metabolomic profiling of soils of chronoseries of podzols of a sand quarry K.V. Sazanova, E.V. Abakumov, D.Yu. Vlasov FGBOU St. Petersburg State University, 199034, St. Petersburg, University Emb. d.7-9   Abstract: Metabolic profiling of soil samples from the chrono-series of the Maluksinsky quarry was carried out: 1-2 years old, fresh sand lithostra with no signs of overgrowing and soil formation, the stage of self-overgrowing 15–20 years with emerging pine-tree and sod-podbur, the stage of self-overgrowing 30–35 years with embryo podzol, the stage of self-overgrowing 70 years with formed podzol and pine forest background soil near the quarry. Soil chronoseries are promising model objects in which the process of soil restoration can be observed in development within certain time intervals. Analysis of methanol extracts of the soil was performed using the GC-MS method. Metabolic profiling of soil samples from the chrono-series of the Maluksinsky quarry was carried out. Amino acids, fatty acids, organic acids of the Krebs cycle, polyols, sugars, sterols, diterpenes, and phenolic compounds were identified in the metabolic profile. The results showed the samples significantly differ in the content of low molecular weight organic substances. The greatest structural diversity of small molecules was found in samples from the upper horizon. Molecular diversity was achieved mainly due to the secondary plant metabolites are likely to leach out of the litter and higher plants. The profiles of the underlying horizons are more similar. In the sand dumps, the amount of organic matter was very low and the metabolic profiles of all horizons differed little. The obtained results expand the understanding of the biochemical composition of the soil, contribute to the understanding of the processes of pedogenesis and the structure of the metabolite network of soils.  

Diagnosis and nomenclature floodplains soils in ecology-genetic and substantively-genetic classification and on the common State Register of soil resources of Russia When diagnosing and soil nomenclature River floodplain associated ecological-genetic classification, substantively-genetic classification and the unified State registry of soil resources of Russia. Studies were conducted on the ecosystem, located on the right bank of the plot of the floodplain of the middle reaches of the River Desna. The plot includes 12 floodplain environmental subsystems of different order. Results of the field studies allow, after receiving additional analytical data and conduct relevant discussions initiate a clarification on a number of issues of classification, diagnosis and nomenclature floodplains soils. At the present stage, it is advisable to use the Unified State Register of Soil Resources of Russia for soil surveys of floodplains.  

The balance of humus in crop rotations with short rotation on erosion-prone slopes Gaevaya Emma Аnatolievna State scientific institution Don Research Institute of Agriculture  Abstract: The purpose of this work is to study the balance of humus and its reproduction in crop rotations with different content in the structure of the acreage of pure fallow and perennial grasses on the slopes of the Rostov region. Studies were conducted in multifactor stationary experiment, located on the side of the beam Large Log in 2003-2017 years. Experiment was laid in 1986 in the system of contour-landscape organization of the territory of the slope with suppress of 3.5-4°. The soil of experimental plot – the ordinary heavy on loess-like loam. The initial content of humus in the soil at the laying of experiment was 3.80-3.83%. I was studied three crop rotations with different percentages of black allow and perennial grasses in the structure of crops rotations. The article presents data of the post-harvest residues amount and nitrogen entering the soil after different crops. The average values of root and crop residues catering in the soil for a hectare of crop rotation area are presented. The balance of humus is calculated when different doses of fertilizers are applying. The role of balk follow and perennial grasses in maintaining the deficit-free balance of humus was studied. It was shown that to achieve a deficit-free humus balance at the ordinary chernozems in crop rotations, located on erosion-prone slopes of the Rostov region, it is necessary to add organic fertilizer in a dose of 100 kg/ha considering the flushing of the soil. Expanded reproduction of soil fertility is possible if you add organic and mineral fertilizers in a dose of 162 kg/ha and crop rotation with 40 % of perennial grasses.

Agrochemical characteristics of mining-heap complexes with various substrata Agrochemical characteristics of mining-heap complexes with various substrata Dmitrakova Y.A., Abakumov E.V. Saint-Petersburg State University Russia, dmitrakovay.a@gmail.com Abstract: With the aim to evaluate of key agrochemical soil characteristics 8 mining-heap complexes were investigated on example of mines for exploitation building materials.  The study sites were located in Leningrad, Novgorod and Tula regions. Objects are presented by 3 limestones, 3 sandy-gravel, 1 phosphorite and 1 fireproof clays mines. All the quarries were presented by maximal diverse ecotopes, where soil pits were created and sampling were conducted.  Soil acidity, total organic carbon and available forms of phosphorous, potassium, ammonia and nitrates were determined in the lab. Data obtained showed that content of nutrients variates within the soil profile depth and this fact illustrate unhomogenety of substrata on heaps. All the ground characteristics are favorable for vegetation development. The only exception was fixed for soil on the pyrite containing ground with extremely acid reaction.  The nutrients content and pH values were strongly affected by relief and reclamation technology, at least it was more pronounced than type of parent material. Despite on popular opinion that substrate of mines are usually poor in terms of nutriens content, in our study their content was comparable or even higher that in natural soils.    

The content of mortmass and biodynamics of arable soil under conditions of real agrotechnology in Siberia Eng. The content of mortmass and biodynamics of arable soil under conditions of real agrotechnology in Siberia Danilova A.A.Siberian Federal Scientific Centre of Agro-BioTechnologies of the Russian Academy of Sciences, 630501 Novosibirsk oblast. Krasnoobsk, a/b 356Danilova7alb@yandex.ru Abstract:We reviewed the literature data and the results of our own research in order to show the dependence of the ecologically significant biological properties of the soil on the content of the mortmass. The transfer of virgin soil to arable land leads to the mineralization of mobile organic matter stocks. In the long-term arable soil, all properties, including biological ones, stabilize at a lower level in comparison to the virgin soil. The use of fertilizers for plant nutrition can increase the total soil organic carbon content by only 0.1-0.2%. But the increase of mortmass carbon content can be more significant. Consequently, we have the opportunity to influence the biodynamics of the soil by changing of plant residues amount in the soil. In conditions of 4 grain-crop rotations, the influence of 4 doses of stubble wheat residues (2,2; 6,5; 7,2; 9,5 t/ha in year) on soil properties was studied. In 10 years after the beginning of the observations, the amount of mortmass was accordingly equal to 400, 690, 880, 1040 mg С/kg. The indicators of the biological activity of the soil increased by about 30-50%The relationship between the biological activity indicators and the detoxification activity of the soil was not straightforward.The most optimal dose of plant residues from ecological and agrotechnological positions was a dose equal to 6,5 t / ha, which provided detoxification of pesticides within the current growing season. Thus, there is the posibility to optimize the ecotoxicological situation in the arable soil at the expense of the agrocenosis's own resources.

Heavy metals in soils and road dust in the Stoilo-Lebedinsky mining complex. The content of heavy metals and metalloids were investigated in iron ore, soils and road dustin surrounding the Stoilo-Lebedinsky mining complex of Kursk Magnetic Anomaly, where a lot of mining, metallurgical and other enterprises are located. It was shown that this territory is subject to aerotechnogenic pollution by a large set of chemical elements, but because of their low background content in mined iron ore and natural variation of soil composition, it is difficult to identify the technogenic impact using gross analysis. The determination of chemical elements associated with iron in Tamm extract in combination with chemical composition of road dust, is the most informative way to detect anthropogenic impact on territory, influenced by ferrous metallurgy enterprises.  

Methodical principles for determining the bulk density of chernozem Morozov Igor V., Vareldzhan Diana E., Borovikova Yana V., Kolesnikova Nadezhda A. Southern Federal University, Rostov-on-Don, Russia; migovad@sfedu.ru Abstract: Bulk density of soils is a fundamental physical value, wich is used in soil science to assess the relationship between solid, liquid and gaseous phases of the soil, to calculation of the total and differential porosity, stocks of substance, estimation of the degree of addition, and other agrophysical characteristic.The purpose of the research is designing of methodical principles for determining of the bulk density of chernozem. The feature of ordinary calcareous chernozem is the change in volume when moisture is varied, it was decisive when research object was choosing. Drilling and calculation methods were used to determine the soil density. Studies have shown that the dynamics of soil moisture is the reason of bulky changes in the soil, which is fixed by us in the form of parameters such as volume compaction and swelling volume. Also volume changes inevitably must be reflected in the change of the parameters of soil density. The dynamics of the bulk density when the soil moisture change is due to the phenomena of swelling and compaction exactly. At that the result of determination of soil bulk density will depend on the initial condition of soil: its moisture and, the occupied volume accordingly. The same soil can have different bulk density values - 1.2 g / cm3 and 1.8 g / cm3, respectively. These values correspond to two possible limiting status of soil as a physical body with a variable volume. We think that the available methods require a conceptual solution; when calculating the bulk density, it is proposed to take into account the dynamics of the volume of the soil, determining the interval «compaction limit of bulk density - swelling limit of bulk density».

About the formation of carbonate horizon of ordinary calcareous chernozems Morozov Igor V., Bezuglova Olga S., Minaeva Evgeniya N. Southern Federal University, Rostov-on-Don, Russia, migovad@sfedu.ru Investigations were carried out on ordinary calcareous chernozem, which is named as migrate-segregated chernozem according to the Soil Classification of Russia (2004). The genesis of calcareous horizons is significantly linked with long-term dynamics of carbonates' precipitation. According to our opinion, upper boundary and deepness of accumulation of calcareous concentrations are determined by pulsating nature of the annual sum of atmospheric precipitations and their distribution during long-term cycle. The bottom boundary of water infiltration for significant part of atmospheric precipitations during 33th year period of observations is genetically related with a part of soil profile where calcareous concentrations are formed. About 71 % of the annual sum of atmospheric precipitations is percolated to the depth from 80 to 159 cm as a result of water infiltration into soil profile. It is an evidence of the paleomorphic nature of soil horizon where water-soluble salts and gypsum are significantly accumulated at depth 210-250 cm, and the same time is a proof of the absence of link with modern chernozemic soil-forming process.