A. D. Galtsova, R. R. Kinzhaev, A. V. Arzamazova, V. A. Romanenkov
{"title":"The Effectiveness of Different Forms of Nitrogen Fertilizers in Phytoremediation on Oil-Contaminated Typical Chernozem","authors":"A. D. Galtsova, R. R. Kinzhaev, A. V. Arzamazova, V. A. Romanenkov","doi":"10.3103/s0147687424010022","DOIUrl":"https://doi.org/10.3103/s0147687424010022","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The study is devoted to the role of optimized nutrition and the development of a mixture of grasses in high-polluted oil-contaminated typical chernozem. The influence of different forms of nitrogen fertilizers at a moderate level of plant nitrogen supply in the presence of oil pollution has been investigated using indicators of soil agrochemical and enzymatic properties, as well as the productivity and qualitative composition of the plants used for phytoremediation. Oil soil contamination at doses of 5 and 7 g of oil per 1 g of soil significantly negatively affects the productivity rates of the used plants and leads to a reduction of their biomass and a decrease in the content of major mineral elements (NPK). The nutrition optimization by application of mineral fertilizers leads to an increase in biomass and improves the qualitative composition of plants growing under oil pollution conditions. The most favorable conditions for the growth and development of plants are associated with application of nitrate forms of nitrogen fertilizers, but not ammonium or ammonium–nitrate forms in equivalent doses. Activity rates of the studied enzymes (catalase, urease, and phosphatase) highly depend on the oil content in the soil. Application of mineral fertilizers leads to an increase of the enzymatic activity of typical chernozem proportionally to a decrease in oil content in the soil. This indicates intensification of oil hydrocarbon degradation processes associated with application of mineral fertilizers.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"98 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. A. Teregulova, N. A. Manucharova, N. A. Urazbakhtina, N. S. Zhemchuzhina, L. I. Yevtushenko, A. L. Stepanov
{"title":"Antimicrobial Activity of Specialized Metabolites of Soil Chitinolytic Streptomycetes","authors":"G. A. Teregulova, N. A. Manucharova, N. A. Urazbakhtina, N. S. Zhemchuzhina, L. I. Yevtushenko, A. L. Stepanov","doi":"10.3103/s0147687424010083","DOIUrl":"https://doi.org/10.3103/s0147687424010083","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>One-hundred-and-fifty strains of streptomycetes have been isolated from gray and dark gray forest soils, as well as from typical chernozem. The isolated strains were analyzed in vitro for antimicrobial activity on nutrient media and in gray forest soil against 23 collection pathogenic test cultures of fungi and bacteria. Four biologically active isolates with a wide action spectrum have been identified and deposited at the All-Russia Collection of Industrial Microorganisms of the National Research Center “Kurchatov Institute” under the following numbers: <i>Streptomyces xiamenensis</i> TB VKPM As-2204, <i>Streptomyces anulatus</i> TG VKPM As-2203, <i>Streptomyces sindenensis</i> TK VKPM As-2205, and <i>Streptomyces flavovirens</i> TT VKPM As-2202. A study of the effect of presowing treatment of wheat seeds with 15-day culture liquids of <i>S. xiamenensis</i> TB VKPM As-2204, <i>S. anulatus</i> TG VKPM As-2203, and <i>S. sindenensis</i> TK VKPM As-2205 for germination rates and levels of infection with <i>F. graminearum</i> has revealed that they inhibited the growth of a pathogenic fungus and improved the seed vigor and germination of wheat. The resulting strains of soil actinomycetes can be used in biotechnology for creating new bioinoculants to combat phytopathogenic bacteria and fungi. The strains can also be used for stimulating the plant growth, as well as for soil bioremediation in organic farming. Based on the HPLC method (high-performance liquid chromatography), we have identified specialized antimicrobial metabolites of monosporous strain suspensions. The identified antibiotics are N-Butylbenzenesulfonamide, 1-(1H-Benzo[d]imidazol-2-yl)ethan-1-ol, 2-[(3S)-1-(Cyclohexylmethyl)-3-pyrrolidinyl]-1H-benzimidazole-5-carbonitrile, Cyclo(leucylprolyl), and Cyclo(phenylalanyl-prolyl). The identified antiseptics are Cetrimonium and Carvone. The identified phytohormone is auxin indole-3-acetic acid (IAA). Observation of the dynamics of development of the introduced actinobacteria in soil samples has shown a high activity of streptomycetes that use chitin. Analysis of the diversity of the prokaryotic complex of the studied soil samples based on high-throughput sequencing of the conserved region of the 16S rRNA gene has revealed its controlling role in the microbial community during the introduction of <i>S. xiamenensis</i> TB VKPM As-2204, which is determined by its antibiotic-forming activity.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. R. Kinzhaev, A. D. Galtsova, A. V. Arzamazova, V. A. Romanenkov
{"title":"Optimization of Nitrogen Nutrition of Grasses on Oil-Polluted Oligotrophic Peat Soil","authors":"R. R. Kinzhaev, A. D. Galtsova, A. V. Arzamazova, V. A. Romanenkov","doi":"10.3103/s0147687424010034","DOIUrl":"https://doi.org/10.3103/s0147687424010034","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper demonstrates the importance of creating optimal conditions for mineral nutrition of cereal grasses and microorganisms in oligotrophic oil polluted peat soil under remediation. To establish the effectiveness of using various forms of nitrogen fertilizers in oil pollution, changes in the agrochemical properties and enzymatic activity of the soil, the productivity of cereal grasses, and the amount of DNA prokaryotes were investigated. A significant increase in the productivity of plants and the number of bacteria and archaea in oligotrophic peat soil is shown when optimizing nitrogen nutrition, especially pronounced when introducing the ammonium-nitrate form of fertilizer. There is a close relationship between catalase activity in soil and residual oil content in soil.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. P. Samsonova, J. L. Meshalkina, M. I. Kondrashkina, S. E. Dyadkina
{"title":"Number of Replications during Monitoring of the Soil Organic Carbon Content in Forest","authors":"V. P. Samsonova, J. L. Meshalkina, M. I. Kondrashkina, S. E. Dyadkina","doi":"10.3103/s0147687424010071","DOIUrl":"https://doi.org/10.3103/s0147687424010071","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The estimation of the required number of soil samples to assess the content of soil organic carbon (SOC) in forest biogeocenosis during monitoring studies is considered using the example of data given in an article by E.A. Dmitriev et al. Primary data on the SOC content were obtained in a spruce forest at 166 sites in layers of 0–10, 10–20, and 20–30 cm after removal of the litter. The sampling was performed at points of a regular grid formed by equilateral triangles with 1-m sides within a regular hexagon with a side of 7 m. The SOC content was determined by the method by Tyurin. The original article presents statistics for three zones: near-trunk, under-crown, and inter-crown. The spatial variation of carbon content in all the zones and at all depths is high, the coefficients of variation are about 50%. It is shown that the number of replications required to estimate the mean SOC content at a 95% confidence level is hundreds of samples in the 0- to 10-cm layer and decreases to tens of samples in the 20- to 30-cm layer. Since the number of replications for testing hypotheses about the equality of means depends not only on the confidence level, but also on the power of the criterion used, the required number of replications increases several times. Testing by samples taken from the entire vertical 0- to 30-cm-thick layer with the formation of composite samples reduces the number of required replications. However, careful observation of sample preparation, including primary mixing of samples, is required.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140156308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. A. Kulikova, V. A. Kholodov, Y. R. Farkhadov, A. R. Ziganshina, A. G. Zavarzina, M. M. Karpukhin
{"title":"Dissolved Organic Matter of Chernozems of Different Use: the Relationship of Structural Features and Mineral Composition","authors":"N. A. Kulikova, V. A. Kholodov, Y. R. Farkhadov, A. R. Ziganshina, A. G. Zavarzina, M. M. Karpukhin","doi":"10.3103/s0147687424010046","DOIUrl":"https://doi.org/10.3103/s0147687424010046","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Structural peculiarities of the organic component of dissolved organic matter (DOM) of typical chernozems (Protocalcic Chernozem), differing in the principal direction of soil organic matter transformation (accumulation or mineralization), were analyzed in relation to the mineral composition of DOM. Spectrometry in the ultraviolet and visible range and fluorescence spectroscopy were applied to characterize the structural features of the organic component. These approaches are most often used for these purposes due to the rapidity and accessibility of instruments. The content of mineral elements (Al, B, Ba, Ca, Fe, K, Li, Mg, Mn, Na, P, S, Si, and Zn) was determined by optical emission spectrometry with inductively coupled plasma. It has been revealed that DOM of plowed chernozems, where mineralization is the leading process of organic matter transformation, is characterized by increased indices E2/E3, BIX, and SUVA254, which indicates a smaller molecular mass (MM) and a greater contribution of organic matter of microbial origin and of aromatic structures to the composition of DOM as compared to soils not involved in agricultural use. The analysis of the mineral component has shown that Si and Ca are the main elements in DOM. The involvement of chernozems in agricultural use results in a decrease in Ca content and in an increase in Si, Fe, and Al content, which reflects greater weathering of the mineral matrix of chernozems. The rank correlation analysis has revealed significant relationships between the structural characteristics of DOM (E2/E3, SUVA254, MM, BIX, and T) and the content of mineral elements (Ca, Al, Fe, and Si), which testifies to the influence of weathering processes on the formation of soil DOM.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. V. Leonicheva, M. E. Stolyarov, T. A. Roeva, L. I. Leonteva
{"title":"The Effect of Soil Nutrition and Foliar Fertilizers on the Soil Potassium Regime and Potassium Status of Apple Trees in a Rainfed Orchard","authors":"E. V. Leonicheva, M. E. Stolyarov, T. A. Roeva, L. I. Leonteva","doi":"10.3103/s0147687424010058","DOIUrl":"https://doi.org/10.3103/s0147687424010058","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The purpose of this research was to study the interannual and seasonal dynamics of mobile potassium compounds in orchard soil and assess the potassium status of apple trees influenced by foliar and ground fertilization with potassium and nitrogen. The research was carried out in 2016–2020 growing seasons under soil-climate conditions of the forest-steppe zone of the Central Russian Upland (Orel region). The field experiment studying the efficiency of nitrogen and potassium fertilizers has been running in the apple orchard with apples of cv. “Venyaminovskoe” since 2015. The soil of the experimental orchard is loamy Haplic Luvisol. Ammonium nitrate and potassium chloride were used as soil fertilizers at doses of N30K40, N60K80, and N90K120. Urea (1%) and potassium sulfate (0.3%) solutions were used for foliar fertilizing. The content of mobile potassium compounds was determined in soil samples that were monthly taken from a depth of 0–20, 20–40, and 40–60 cm from May to September. The level of mobile potassium in the root zone of unfertilized plots was relatively constant during the five years. At the same time, the regular ground fertilization led to a gradual accumulation of potassium in the topsoil. Its accumulation rate depended on fertilizer doses. When the soil potassium content reached 150 mg/kg, the seasonal fluctuations of the index increased and vertical migration of potassium began to be observed in the soil profile. The main factors influencing the potassium regime of apple trees were weather conditions, yield, and fertilization rates. A correlated soil and plant diagnosis has shown that the negative effect of the decrease in the availability of soil potassium also persists in the subsequent growing season; however, it can be weakened using soil and foliar fertilizers. The highest yield of apple trees in the first four years of fruiting was observed when the soil was fertilized with N60K80 in combination with foliar sprays.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"155 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Changes in Parameters of Effective Soil Fertility in the Kamennaya Steppe under the Effect of Forest Shelter Belts Allocated to Various Landscapes","authors":"Yu. I. Cheverdin, V. A. Bespalov, T. V. Titova","doi":"10.3103/s0147687423060030","DOIUrl":"https://doi.org/10.3103/s0147687423060030","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Studies of changes in the parameters of effective fertility in space and with time under the effect of forest shelter belts allocated to various landscapes (forest belt no. 40 on the watershed and forest belt no. 72 on the slope) were performed within the framework of the theme of state task at the Dokuchaev Voronezh Federal Agricultural Scientific Center in 2021–2022. It was found that the soils of the watershed area were characterized by the greatest mobility of available phosphorus and exchangeable potassium. The provision of soils with nitrate nitrogen on the watershed and on the slope during the growing season was similar. The watershed area was characterized by a decrease in the amount of mineral elements in soils of the fallow land and at the edges of forest belt no. 40. As for the forest belt itself, the parameters were maximal in its center and gradually decreased towards the edges. The parameters of plow land fertility increased with the distance from the forest belt to the maximum at a distance of 75–150 m from the forest belt. On the plowed land adjacent to ravine forest belt no. 72, the content of mobile phosphorus and exchangeable potassium increased towards the forest belt. The content of nitrate nitrogen, on the contrary, decreased down the slope, reaching a minimum near the forest belt. It was proved that, on the watershed, the content of nitrate nitrogen and exchangeable potassium increased by the end of the growing season, and the content of mobile phosphorus decreased. On the slope plot, there was an increase in all the studied fertility parameters by the end of the growing season.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Change in the Content of Total and Easily Degradable Organic Matter in Soddy–Podzolic Soil Associated with a Long-Term Straw Incorporation","authors":"I. V. Rusakova","doi":"10.3103/s0147687423060066","DOIUrl":"https://doi.org/10.3103/s0147687423060066","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Plant residues and by-products of cereal and leguminous crops are the most important resource for the preservation and regeneration of soil organic matter (SOM). To assess the state of SOM and its role for agriculture, it is important to have information not only about total organic carbon (C<sub>org</sub>), but also about the content and ratio of labile, easily mineralized and biologically accessible components that are especially essential for soil nutrient status and maintaining microbial activity and effective soil fertility in general. However, it the scientific literature, there are almost no data on changes in the content and dynamics of various SOM pools and fractions associated with a long-term straw incorporation. Thus, the influence of prolonged and repeated incorporation of cereal and leguminous straw on the content of C<sub>org</sub> and easily degradable SOM fractions, i.e., water-soluble (cold- and hot-water extractable) carbon and mortmass, as well as their relation with the crop yields have been studied in a long-term field experiment on soddy–podzolic sandy loam soils in Meshchera Lowlands at the end of the fourth stage of 5-year grain–row crop rotation (winter wheat, lupine, potatoes, barley, and annual grasses). The repeated incorporation of winter wheat, lupine, and barley straw in the amount of 3 t/ha (in total, 36 t/ha during 4 years of crop rotations) together with annual application of mineral fertilizers (on average N54P51K57 per year) have increased the content of C<sub>org</sub> by 13% (compared to the initial content), mortmass reserves by 2.42 times, carbon stocks in mortmass (C<sub>mm</sub>) by 2.36 times, cold-water extractable carbon (C<sub>w</sub>) by 11%, and hot-water extractable carbon (C<sub>hw</sub>) by 31% relative to the option without fertilizers and thus, improved the arable layer of soddy–podzolic soil. In the variants with the straw application, the proportions of C<sub>hw</sub> and C<sub>mm</sub> fractions in SOM are higher, which indicates an increase in the availability of labile easily degradable carbon in soil. The correlation between yields of cultivated crops and the content of SOM components under study have showed to be positive with varying degree of coherence. Thus, the regular straw incorporation in soil is an effective method of SOM preserving/regenerating and increasing the availability of labile carbon.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139762931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fertility Indicators of Haplic Luvisol of a Sour Cherry Orchard Associated with Application of Nitrogen and Potassium Fertilizers","authors":"T. A. Roeva, E. V. Leonicheva, L. I. Leontieva","doi":"10.3103/s0147687423060054","DOIUrl":"https://doi.org/10.3103/s0147687423060054","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The effect of annual application of urea and potassium sulfate on the most important agrochemical properties of the soil root zone has been evaluated in a field experiment in a sour cherry orchard. The soil of the orchard is medium-loamy Haplic Luvisol with initially favorable parameters: pH<sub>KCl</sub> 5.8 and high humus content, (3.58–4.57%). Since 2017, fertilizers have been applied annually in early spring according to the following experiment design: 1) control (no fertilizers), 2) N30K40, 3) N60K80, 4) N90K120, and 5) N120K160. Soil samples have been collected from the soil layers of 0–20, 20–40, and 40–60 cm in 2017 (the first year of experiment) and in 2022 (6 years of fertilization). The annual application of fertilizers for 6 years led to a significant increase (by 1.4–2.2 times) in the content of exchangeable potassium in the soil layer of 0–20 cm with a constant humus content in the entire root zone. At the same time, an increase in acidity and loss of calcium has been noted in the upper layers of the soil fertilized in doses of N60K80 or more. For the period 2018–2022, the highest total yield of Turgenevka sour cherry trees was in the variant with the application of N60K80 and N120K160 (35.5 and 36.5 t/ha, respectively); however, relative to the control (29.3 t/ha), this increase is insignificant. Thus, the loamy Haplic Luvisol with favorable agrochemical characteristics can maintain stable soil fertility conditions and ensure the growth and fruiting of sour cherry trees without the additional use of fertilizers for 8 years after planting.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139763136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Effect of Long-Term Use of Fertilizers on Soil-Dwelling Micromycetes of Meadow Chernozem Soil in Wheat Crops","authors":"L. P. Shumilova, E. V. Banetskaya","doi":"10.3103/s0147687423060078","DOIUrl":"https://doi.org/10.3103/s0147687423060078","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The effect of long-term systematic application of fertilizers on the mycobiota of meadow chernozem soil in a stationary field experiment (in Amur oblast) was studied for the first time. Information about cultivated soil microscopic fungi is given, and an annotated list including 26 species is compiled. It was revealed that the application of nitrogen fertilizers (N30) for wheat against the background of long-term use of fertilizers caused an increase in the total number of soil fungi relative to the control variant by an average of 30–68%, whereas a less significant increase in the number of mushroom germs was observed (23–29%) with their aftereffect. The intervals of the optimal content of macronutrients for the active increase of the pool of microscopic fungi in meadow chernozem soil were determined: phosphorus 50–65, potassium 195–210, and nitrogen ≥10 mg kg<sup>–1</sup> with optimal soil moisture of 22–24%. The aftereffect of long-term application of fertilizers, especially organomineral fertilizers, as well as the application of mineral fertilizers (N30) directly in the year of the study had a positive effect on the species diversity, frequency of occurrence, and dynamics of the number of fungal germs in the soil. Negative rearrangements of micromycete complexes as a result of prolonged use of mineral fertilizers in the agrocenoses of meadow chernozem soils were not detected, the introduction of nitrogen–phosphorus fertilizers contributed to a significant decrease in the pool of phytopathogenic fungi.</p>","PeriodicalId":501690,"journal":{"name":"Moscow University Soil Science Bulletin","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139763234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}