Alluvial Meadow Soils Research Articles

Mathematical approach used for the assessment of foliar application of biostimulant and fertilizers to coriander varieties (Coriandrum sativum L.)

The biostimulants and fertilizers applied as foliar spray or directly to soil play a crucial role in enhancing the development and quality of coriander by supplying essential macro- and micro-nutrients. The ecological approach to reducing soil fertilizers prioritizes the utilization of foliar nutrients. The objective of this study was to investigate the impact of foliar applying products on the seed yield, essential oil content and composition of coriander cultivars in Central Bulgaria. The field trial was carried out on alluvial-meadow soil type in the region of Plovdiv, Central Bulgaria, in the period 2020–2022. The experiment was conducted using the approach of fractional parcels with four repetitions. Three foliar products were examined in the relevant rates: Energy 20–8–60 – 25 L ha−1; Fulvin 40–22 – 80 L ha−1; Isabion – 30 L ha−1. The treated plants were compared to an untreated control. The tested products were applied in the end of the budding stage to five coriander varieties: Yantar, Moroccan, Mesten Drebnoploden, Thüringen and Marino. Results showed that the application of foliar products, compared to the control, led to an increase in seed yield by 4.2–9.6 % and essential oil content up to 11.8 %. Statistical analysis has demonstrated that the utilization of the Energy 20–8–60 has the most significant impact on the concentration of essential oils, while Isabion has the biggest influence on the quantity of seeds produced. The Isabion biostimulant increased the content of the main compound – β-linalool in the essential oil of Moroccan variety up to 8.9 % and Marino and Mesten Drebnoploden by 3.6 and 5.4 % respectively, compared to the control. The foliar application of Energy 20–8–60 fertilizer led to a decrease of β-linalool percentage in Marino, Moroccan, Mesten Drebnoploden and Thüringen. All studied varieties exhibited the presence of aldehyde 2E-tridecen-1-al under the impact of foliar fertilizers, whereas the untreated plants did not.

Elemental Composition and Structural Features of Humic Acids from Floodplain Soils of the Selenga River Delta

The study of the elemental composition and structure of humic acids of floodplain soils of the delta of the Selenga River (Western Transbaikalia) was carried out. The research area belongs to the delta meadowmarsh and foreststeppe region, which is an area where deposits of sandy and silty fractions are actively carried out from the entire basin. Here, soils and vegetation are natural biofilters. Depending on the bioclimatic conditions, groundwater regimes, and sediment composition, soils are formed that differ in the composition of humus and humic acids (HA). The objects of research were alluvial (meadow, meadowmarsh, meadow saline) soils of the Selenga delta, according to the classification WRB – Fluvisols. The analysis of 13C-NMR spectra of HA preparations of the studied floodplain soils made it possible to identify ranges of chemical shifts belonging to carbon atoms of various functional groups and molecular fragments. NMR spectroscopy data showed that humic acids of alluvial meadow soil are more enriched in aromatic fragments than humic acids of meadowmarsh and meadow saline soils. A slightly higher degree of aromaticity in alluvial meadow and meadowmarsh soil is associated with environmental conditions and the component composition of the precursors of humification. An increase in the proportion of aliphatic structures and a decrease in the proportion of aromatic fragments in the composition of preparations of meadow salt marsh soil make it possible to judge the simplification of the structure of humic acid. Soil moisture in combination with salinization significantly reduces the rate of transformation of soil organic matter and leads to an increase in the proportion of non-oxidized aliphatic fragments. The use of NMR spectroscopy in the study of soils has significantly expanded the understanding of its composition and structure, deepened the understanding of the mechanisms of humification and transformation of soils of various genesis.

Fertilization Type Differentially Affects Barley Grain Yield and Nutrient Content, Soil and Microbial Properties.

The use of artificial fertilizers follows the intensification of agricultural production as a consequence of population growth, which leads to soil depletion, loss of organic matter, and pollution of the environment and production. This can be overcome by increasing the use of organic fertilizers in agriculture. In the present study, we investigated the effect of using vermicompost, biochar, mineral fertilizer, a combination of vermicompost and mineral fertilizer, and an untreated control on alluvial-meadow soil on the development of fodder winter barley Hordeum vulgare L., Zemela cultivar. We used a randomized complete block design of four replications per treatment. Barley grain yield, number of plants, and soil and microbiological parameters were studied. We found statistically proven highest grain yield and grain protein values when applying vermicompost alone, followed by the combined treatment and mineral fertilizer. The total organic carbon was increased by 70.2% in the case of vermicompost and by 44% in the case of combined treatment, both compared to the control. Thus, soil microbiome activity and enzyme activities were higher in vermicompost treatment, where the activity of β-glucosidase was 29.4% higher in respect to the control, 37.5% to the mineral fertilizer, and 24.5% to the combined treatments. In conclusion, our study found the best overall performance of vermicompost compared to the rest of the soil amendments.

CONTENT AND EXPORT OF N, P, K AND SI WITH MAIZE BIOMASS DEPENDING ON THE FERTILIZATION ON ALLUVIAL-MEADOW SOIL

The aim of the study in a pot experiment on Alluvial-meadow soil (Fluvisol, FAO) was to evaluate the effect of different rates and combinations of nitrogen, phosphorus, potassium and silicon fertilizers on the growth of maize (Zea mays L.) an early hybrid Р-8834 from group 310 FAO “Syngenta”. The experiment included 16 variants of fertilization in 3 replications. Data were obtained on the yield of fresh and absolutely dry biomass of maize plants and the content of N, P, K and Si in the dry biomass was assessed. It was found that the concentrations and the export of the studied macroelements with the biomass were significantly influenced by the fertilization applied. Nitrogen export was the highest in the N200, N300 and N400 rate treatments, and in comparison with the export of the other investigated elements. The export of N, P, K, and Si with maize dry biomass corresponded to a significant extent the contents of the macroelements in it. With increasing fertilization rates, not only the content, but also the export of nitrogen, phosphorus, and silicon increased. Regarding the potassium, this tendency was expressed to a less extent.

Assessment of the impact of the degrees of degradation of pastures on the desert alluvial meadow soils of the village of Zhambyl

The article considers the features of the structure, chemical composition and physical properties of alluvial meadow soils of the pastures of the desert zone of the village of Zhambyl. These soils were formed in the sandy and sandy alluvial deposits of the Shu River. The soils of the floodplain of the river are mainly characterized by high fertility potential. But one of the factors limiting the growth of their potential fertility is the salinity of the soil image and the degree of degradation of pastures. The assessment of soil and plant indicators of pasture degradation in the Zhambyl base area is given. Previously, the area was irrigated and fertilized, and now it is used as a pasture. But due to overgrazing, the alluvial meadow soils of the desert near the village of Zhambyl and the vegetation on their surface have undergone anthropogenic degradation. Studies have shown that as the degradation of pastures increases, the thickness of the humus layer (A+B1) thinns, and the content of humus and nutrients in the soil decreases. The species and botanical composition of plants is undergoing changes, reducing their protection of the soil surface and the productivity of pasture feed. The results obtained are the theoretical foundations for the development of measures to increase soil fertility and productivity of natural vegetation on degraded pastures in the desert zone.

Relationship between mineral fertilization, plant macro- and microelement contents and yield of wheat (Triticum aestivum L.)

Abstract. The effectiveness of mineral fertilization on wheat productivity was determined in a field experiment on Alluvial-meadow soil (Fluvisol, FAO 2015) at the experimental field of Tsalapitsa village, Plovdiv region, during 2019-2020. Four increasing rates of nitrogen fertilization along with a constant background of phosphorus fertilization were tested in the following variants: N40P100; N80P100; N120P100; N160P100, and N0P0 (control) – without any fertilization. The influence of these variants on yield and the content of basic macro- and microelements in wheat’s dry biomass were assessed. Plant samples were collected at the full maturity phase of wheat, with each variant sampled in triplicate, to determine the concentrations of N, P, K, Ca, Mg, Cu, Zn, Mn, and Fe. Correlation analysis and analysis of variance (ANOVA) were employed to identify dependencies between observed variables. Significant differences between the variants for N% content in grain, chaff and straw of wheat were established. The highest nitrogen values were observed in the grain of the N160P100 and N120P100 variants, at 2.10% and 2.02%, respectively. The applied fertilization had a significant positive effect on the accumulation of potassium, calcium, copper, manganese and iron in wheat biomass. This finding was supported by the correlation coefficients between fertilizer rates and N (R = 0.948), Ca (R = 0.854), Cu (R = 0.681), Mn (R = 0.735), and Fe (R = 0.769) in the wheat grain. Significant yield differences were observed among the variants, with the highest yield recorded for N120P100 (7123.0 kg/ha), more than tripling that of the control variant. The uptake of nitrogen, phosphorus and potassium by the total biomass of wheat increased depending on the fertilization rates and it was the highest in the N120P100 variant.

Comparative effectiveness of the use of mineral and organic fertilizers in the cultivation of onions in an annual crop

We conducted a comparative study of the effect of mineral and organic fertilizers on the yield and quality of 5 medium-ripened domestic onion varieties in an annual crop on the alluvial meadow soil of the Moscow region. Laboratory and field experiments were carried out by the Department of Agriculture and Agrochemistry of the VNIIO branch of the FNCO in 2020–2022 on sufficiently cultivated medium-loamy alluvial meadow soils of the central part of the Moskvoretsky floodplain. In the experiment with the 5th varieties and the 3rd variants of the mineral fertilizer system, the commercial yield of onions was 53.0 t/ha, whereas with the use of an organic fertilizer system – 58.4 t/ha. Accordingly, the increase in yield relative to the control without fertilizers in the first case was equal to 106, in the second – 117%, marketability – 93 and 95%. It has been established that when determining the need of plants for nutrients during the growing season, it is preferable to use methods of leaf diagnostics. On average, for 5 varieties of onion, the yield increase, according to the results of plant diagnostics, turned out to be 13% more than in variants with NPK doses calculated according to soil diagnostics. Biochemical quality indicators for all onion varieties and all fertilizer variants did not differ statistically significantly from the control. The quality of onion products practically did not depend on the applied fertilizer systems. The organic fertilizer system provided the best supply of nutrients to onions in the phase of the beginning of bulb formation, which was crucial for obtaining the greatest yield in an annual crop. On average, for 3 variants of the organic system, the soil contained 2.34 mg/100 g of mineral nitrogen in the phase of the beginning of bulb formation, whereas with the use of the mineral system – 1.65 mg/100 g, or 42% less.

The crop yield of spring wheat under conditions of the Aridized climate

Due to the global warming, massive aridization is observed in the Transbaikal territory, including Buryatia, as a result, agriculture is forced to function under conditions of a strict limit of atmospheric and soil moisture. In spring and early summer, the potential evaporation here is 3-5 times higher than the amount of rainfalls, which leads to crop shortages and to a harvest failure. Thus, it is necessary to use irrigation reclamation for the effective management of agricultural production in this territory. This work researches the manifestation of soil drought in alluvial meadow soil. The study of the effect of various doses of mineral fertilizers and maintenance of soil moisture at the lowest moisture level at 70% LMC and 80% LMC showed that maximum yield and minimum water consumption coefficient are provided by maintaining soil moisture above 80% LMC and fertilization with a doubled dose of nitrogen.

Исследование динамики влажности почвы при капельном поливе

Purpose: to study the dynamics of moisture in soils on the drainage layer during drip irrigation to save water resources and ensure uniform watering of crops using moisture contours. Materials and methods. The study is based on the theory of moisture transfer under the influence of drip irrigation on soil. Moisture contours were studied in laboratory conditions using a soil lysimeter, which was used to model the geological cross-section of the irrigated area, represented by alluvial meadow soils formed on pebbles. The pebble layer thickness was assumed to be up to 3 m. A regression analysis of moisture movement was carried out, and a mathematical model describing the nature of its movement on the drainage layer was obtained. The estimated volume of wet soil was defined on the basis of moisture contours as a result of calculating the volume of the formed lathe object using cartograms for each hour of irrigation. Results. Data on the moisture distribution in soil profile according to irrigation hours, presented on cartograms constructed using a personal computer, were obtained. The contours with the same humidity – isolines on which the humidity was displayed: 5; 10; 40 % are highlighted on the cartograms. It has been determined that water at an emitter discharge of 2.5 l/h reaches the drainage layer 4 hours after the beginning of irrigation. The graph for moisture distribution in soil volume by hour, reflecting the dynamics of water distribution supplied from an emitter with a constant discharge over 10 hours of irrigation has been constructed. Conclusion. The dynamics of moisture distribution during drip irrigation in soils located on a drainage bed was studied. Under experimental conditions, when crop irrigation lasts for more than 8 hours, an ineffective excess of irrigation rate and an increase in the design capacity of the drip irrigation system are observed.

Assessment of the humus state of hortically suitable soils Northwest Caucasus

The laying of intensive industrial gardens in Russia is carried out according to special projects, which are based on complex works that begin the selection and assessment of the soil suitability of land plots. The levels of total humus and its labile forms have been established for the main horticultural soils of the Krasnodar Territory on the basis of long-term studies. The use of these criteria makes it possible to assess the degree of cultivation or degradation processes of the soil cover of each specific garden plot. Studies have shown that, in all surveyed soils of the region, the profile distribution of humus is gradually decreasing. The most informative soil layer for assessing fertility can be considered the upper 30 cm layer. The greatest quantitative and qualitative changes of organic matter occur in this layer. Different gardening zones of the region differ in the content of total humus in the main types of soils, a decrease is observed from ordinary chernozems (northern zone) to alluvial meadow soils (river valleys of the foothill zone). The humus content in the natural cenoses of Kuban chernozems reached 5.5 %, and in heavily plowed soil up to 3.5 %, a similar situation was observed in floodplain soils, these values corresponded to 4.0 % and 2.0 %. All other types of soils occupied an intermediate position in terms of humus content.

Justification of technological indicators of machines for the production of bulb onion in an annual crop

Onion is one of the main vegetable crops. Its consumption in Russia reaches 2.0 million tons. The gross harvest amounted to 1601.5 thousand tons in 2022 with a yield of 31.3 t/ha. The purpose of the research is to substantiate the technological performance of machines for the mechanized cultivation of onions in an annual crop, providing a yield of 70 - 80 t/ha, on alluvial meadow soils of the Non-Chernozem Zone of Russia. The research method is field experience. Issues considered: application of fertilizers, spring tillage, weed control in the previous field and during the growing season, pre-sowing treatment and sowing of seeds in the field, pest and disease control through foliar spraying, drip irrigation, harvesting work

Water consumption and coefficient of water consumption of cotton variety Bukhara-8 in conditions of alluvial-meadow soil of Bukhara region

Water consumption and coefficient of water consumption of cotton variety Bukhara-8 in conditions of alluvial-meadow soil of Bukhara region

The effects of NaCl, KCl, CaCl2 and MgCl2 on the germination and seedling growth of Oryza sativa L. seeds

The effect of increasing concentrations (50, 100, 150, 200, 250, 300 mM) of chloride salts (NaCl, KCl, CaCl2 and MgCl2) on the seed germination and seedling characteristics in the early growing stage was investigated during the period 2021-2022. The seeds of five introduced varieties grown on alluvial-meadow soil type in the territory of the town Plovdiv, Bulgaria were used. The trials were performed in two replicates of 25 seeds for each variant. Germination of seeds was performed between rolls of filter paper with 20 ml of the respective solutions tested. Different chloride salts and their concentrations caused different effects on the studied germination and seedling characteristics. Rice seeds showed a higher germination rate under salinity stress caused by NaCl and KCl than under stress caused by CaCl2 and MgCl2. Increasing the salt concentration extended the mean germination time for all four salts. The highest value of the relative injury coefficient was recorded when rice seeds were treated with MgCl2 at salt concentrations of 150, 200, 250 and 300 mM, as well as when treated with CaCl2 at a concentration of 300 mM. The seedling height reduction varied widely from 14.10% (at 50 mM NaCl) to 100% (at 250 mM and 300 mM MgCl2, 300 mM CaCl2). In general, the application of increasing concentrations of NaCl and KCl salts from 50 mM to 300 mM caused an osmotic stress on rice seeds, while CaCl2 at 300 mM and MgCl2 at 250-300 mM solutions caused a toxicity effect.

Диагностика процессов почвообразования в аллювиальных луговых почвах речных долин таёжно-лесной и степной зон

Long-term data obtained from studying a wide range of alluvial soils formed on floodplain terraces of rivers in the taiga-forest and steppe zones of the European and West Siberian Plains are summarized. The microstructure of alluvial soils in the central part of the floodplain terraces of a number of large rivers such as the Ob, Pechora, Northern Dvina, Ugra, Oka, Desna, Klyazma and Tikhaya Sosna Rivers was studied using the methods of micromorphology and scanning electron microscopy. We identified the features and diagnostic signs of flood-alluvial and elementary soil-forming processes that determine the formation of the profile of alluvial meadow soils. All bioclimatic zones are characterized by high aggregation and porosity of humus-accumulative horizons. However, humus of the mull and moder type is formed in the taiga-forest zone, while in the steppe – only mull. Diagnostic signs of zonality in alluvial meadow soils are the shape and size of Fe-Mn formations, clay deposits and cutans, gypsum and carbonates. In the taiga-forest zone the ecological conditions of the high floodplain are marked by the presence of Fe-Mn new formations in the form of nodules and the presence of clay deposits in the lower part of the profile. At the same time, the low floodplain is marked by Fe-Mn new formations in the form of flakes and spots, clay cutans (films) in the pores and around the units at the bottom of the profile. Alluvial meadow soils of the steppe zone are characterized by the presence of new formations of gypsum and carbonates in the lower part of the profile, and the absence of illuvial cutans. Intensive agrogenic use of alluvial meadow soils promotes the disaggregation of the humus-accumulative horizon, the leaching of amorphous forms of humus from it, and the reorientation of clay minerals into a horizontal arrangement in the horizons located below the plow base.

Физико-химическая оценка почвы в технологии выращивания озимого тритикале

In the experiment, it was found that the productivity indicators of the aboveground mass of winter triticale of the Tribune variety and the content of nitrogen, phosphorus and potassium in their plant tissues are generally consistent with water-physical, physico-chemical parameters and with soil bonification data. It was found that there were no differences in the mass of green leaves and the dry mass of the aboveground part of triticale on chernozem typical of agrocenosis and virgin soil. Of the forest soils, the smallest mass of triticale leaves was obtained on gray forest and turf alluvial, and the largest on sod–podzolic light loamy soil. Plants with massive leaves were also obtained on alluvial meadow soil of the same light loamy granulometric composition. The water content of triticale leaves, as a rule, does not depend on soil fertility. Only on the chernozem-meadow soil of the trunk strips of the apple orchard, in contrast to the row-to-row soil, the hydration of the leaves turned out to be significantly higher. This can be explained by a less acidic reaction, greater hygroscopicity and nitrogen content in the soil of the trunk strip. In summary, winter triticale plants are recommended to be used as a test crop when assessing the degree of soil cultivation. Keywords: WINTER TRITICALE, DEGREE OF CULTIVATION, BIOINDICATION, APPLE ORCHARD, NATURAL LANDS

Биологические показатели и их значение в диагностике аллювиально-луговых почв

The priority issue that is covered in the article is the expediency of using biological indicators in the diagnosis of alluvial-meadow soils. In Azerbaijan, floodplain soils, common on terraces and alluvial fans of large rivers, where there are groundwater recharge conditions and the influence of the flood floodplain regime, have been widely studied. Alluvial-meadow soils develop under the meadow soil with forb-cereal groups and shrub vegetation under the active influence of groundwater occurring at a depth of 1.0–3.5 and surface (flood) moisture. Rich herbaceous vegetation causes the development of the sod process; as a result, a large amount of organic matter accumulates. Considering that various subtypes of floodplain soils are formed, under characteristic bioclimatic conditions, our goal was to study some biological indicators of alluvial-meadow soils of natural and cultivated cenoses. On the selected biotopes (virgin cenosis, near-terrass biotope, alluvial deposits of Shin-chai, as well as agrocenoses of cereals and tobacco), the group composition and amount of microbiota, complexes of invertebrates, phytomass and humus content were comparatively studied. The accounting of phytomass on the virgin cenosis showed that plant products amount to 363 g/m2 of raw and 26 g/m2 of dry mass. Possible relationships between individual biological and some physico-chemical parameters are considered. The results obtained can be used as biotests in the diagnosis of alluvial-meadow soils. Plants are the primary source of organic residues in the soil, their main function of which as a soil-forming plant is to create primary bioproducts and participate in the global biological cycle.

Прилагане на системата за потенциална относителна оценка на земеделските земи в производствените практики

The study clearly presents the positive effect of the application of the newly developed “Methodology for the Potential Assessment of Agricultural Lands in Bulgaria” (Radovanova, 2022) and the corresponding software (Radovanova, 2023), simultaneously with the existing “Methodology for the Current Assessment,”, in agricultural production practices. The object of research is agricultural land with alluvial-meadow soil above the floodplain terraces of the Iskar River in the Samokov field. In parallel, Land Evaluation was carried out through two approaches: 1. Actual Evaluation and 2. Potential Evaluation. It has been established that 2 crops are economically profitable to grow - potatoes and wheat.According to the individual ratings (minimum actual and maximum potential) of the characteristics of this land and the corresponding Field Ratings, guidelines are given for optimizing cultivation technologies and recommending triple crop rotation.

Distribution of Rare-Earth Elements in the Profile of Alluvial Meadow Soil in Kurkuty Bay oz. Baikal

The results presented of the content of rare-earth elements in the profile of the alluvial meadow soil of the Kurkuty bay of the lake Baikal. The maximum content for light rare earth elements was revealed in the upper Ap horizon. The content of heavy rare earth elements along the profile of the sections distributes evenly and reaches its maximum value mainly in horizons A and B.

Efficiency of distributed application of nitrogen on onion (<i>Allium cepa</i> L.) cultivated as an annual crop

Relevance. Onions in Russia in 2021: Cultivation area – 56.3 thousand hectares; Productivity – 28.6 t/ha; Production – 1608.6 thousand tons; Import from the volume of consumption – 10.7%. Modern varieties and hybrids and plant protection products make it possible to obtain high yields in the conditions of the Non-chernozem zone. The aim of the research is to optimize the parameters and terms of technological operations for the cultivation of onion in an annual crop on alluvial meadow soils of the Non-Chernozem Zone.Materials and methods. The nutrition system of onion plants was tested through distributed nitrogen application during the growing season: Option 1 – (N160P160K160) presowing – (Ca40N10 + K40N20 + K40N20) during the growing season; Option 2 – (N110P110K110) presowing + (Ca40N20 + K40N40 + K40N40) during the growing season. Experience in the use of the microbiological preparation Bisolbi-Plant (Bacillus pumilis) BIS88 together with the 1% humic preparation "Rostok" at a rate of one liter per hectare each to stimulate active growth.Results. At the end of the growing season in the second variant of the nitrogen experiment, the growing season was extended by 7-10 days. The excess yield under the second option for 2021-22 years of research amounted to more than 20.0 t/ha and is significant. The difference in the options for applying the Bisolbi-Plant preparation in 2.8 t/ha with HCP05 – 8.2 t/ha was not significant. The advantage of the variant with the biological preparation is higher plant density by 71.0 thousand units/ha and the absence of signs of bacteriosis. Thus, the distributed application of nitrogen (N110P110K110) presowing + (Ca40N20 + K40N40 + K40N40) during the growing season with irrigation water was significantly more effective than (N160P160K160) presowing + (Ca40N20 + K40N20 + K40N20) during the growing season. There was a tendency to increase the yield and quality of products with the double application of Bisolbi-Plant (BIS88) at a rate of (1.0 + 1.0) l/ha.

Changes in Fertility of Alluvial Meadow Soil under Different Fertilizer Systems in Vegetable Crop Rotation

In a laboratory and field experiment conducted in the climatic conditions of the Moscow region, it was found that after 2 rotations (6 years) saturated vegetable crop rotation (late white cabbage – carrots – table beets) on alluvial meadow medium loamy soil with annual application of biocompost at a dose of 6 t/ha (total of 18 t/ha), the humus content in the soil stabilized, a tendency to accumulation of alkaline hydrolyzable nitrogen fraction (+6%) was noted and the consumption of mobile forms of phosphorus (–4%) and potassium (–6%), as well as soil decompression. The use of mineral fertilizers in single and one-and-a-half doses revealed a tendency to decrease the content of humus in the soil (by 3–4%), hydrolyzable nitrogen (by 7–8%) and the accumulation of mobile phosphorus (by 1–15%) and potassium (by 3–22%). The introduction of a low dose of mineral fertilizers led to a deterioration of soil fertility, a decrease in the content of humus (–5%), mobile phosphorus and potassium (by 5 and 17%). Slightly more effective was the introduction of biocompost annually at a dose of 3 t/ha. With the joint application of biocompost (6 t/ha) and a single dose of NPK, stabilization of the humus content in the soil at the initial level, accumulation of hydrolyzable nitrogen (by 9%), mobile phosphorus and potassium (by 5–6%) was noted. During 2 rotations, there was a decrease in the content of exchangeable calcium (by 1–10% from the initial level) and magnesium (by 3–11%) and weak acidification of the soil (a decrease in pHKCl by 1–2% from the initial indicator). It was found that the average productivity of arable land without the use of fertilizers was 50 t/ha, increased by 14 when the half dose was applied, by 28 when the single dose was applied, and by 42% when the half dose was applied, the use of biocompost at doses of 3 and 6 t/ha provided an increase in productivity by 8–16%. With the joint annual application of biocompost with a single dose of NPK, the average productivity of crop rotation increased by 26–35%.