Scientific journal of the Fergana State University
type: channel
description: This is a journal for the latest version of OJS3 that has additional plugins enabled not included in a default journal installation.
publisher: Fergana state university
language: en
publication name: Scientific journal of the Fergana State University
issn: 2181-1571
items: THE POSSIBILITY OF APPLYING KHOPIJ TAJPIBALAP OF STATE POLICY IMPLEMENTATION MECHANISMS RELATED TO THE ELIMINATION OF EMERGENCY ENVIRONMENTAL SITUATIONS
items: asdf
items: ABSORPTION CAPACITY OF SALINE SOILS AND CHANGE IN THE COMPOSITION OF CATIONS
items: EVALUATING SUBSTRATE TYPES FOR ENHANCED HYDROPONIC STRAWBERRY YIELD AND QUALITY
items: A BRIEF RESEARCH HISTORY AND CURRENT SYSTEMATIC STATUS OF THE GENUS SCHIZOTHORAX HECKEL, 1838 (TELEOSTEI: CYPRINIDAE)
items: ICHTHYOFAUNA OF THE KARA DARYA: BEFORE AND AFTER THE INTENSIVE IMPACT OF ANTHROPOGENIC FACTORS
items: EVOLUTION OF MOUNTAIN LAKES, GENETIC CLASSIFICATIONS, AND SPECIFIC FEATURES
items: DEMOGRAPHIC ACTIVITY OF THE POPULATION AS A SOCIO-GEOGRAPHICAL OBJECT
items: TECHNOLOGY FOR PREPARING A NUTRIENT MEDIUM FOR MICROALGAE (EXAMPLE OF ANKISTRODESMUS)
items: ECONOMIC FACTORS AFFECTING POPULATION DISTRIBUTION
items: BIBLIOMETRIC ANALYSIS OF SCIENTIFIC RESEARCH ON THE GENUS LEPIDOSAPHES
items: MORPHOLOGICAL AND ECOLOGICAL FEATURES OF APHID ACYRTHOSIPHON PISUM (HARRIS, 1776) (using the example of Northern Fergana)
items: ON THE RECORD OF CIDARIA DISTINCTATA STAUDINGER, 1892 (LEPIDOPTERA: GEOMETRIDAE, LARENTIINAE) IN THE FERGANA VALLEY
items: COMPARATIVE ANALYSIS OF MORPHOLOGICAL VARIABILITY OF ISKANDARIA PARDALIS (TURDAKOV, 1941) IN THE KARATAG AND TUPALANG RIVERS
items: SOME ASPECTS OF LABOR MIGRATION IN JIZZAKH REGION
items: REGIONAL STRUCTURE OF FOREIGN MIGRATION IN SURKHANDARYA REGION
items: METHODS FOR GEOECOLOGICAL ASSESSMENT OF REGIONAL TOURIST AND RECREATIONAL SYSTEMS
items: TERRITORIAL FEATURES OF THE DEVELOPMENT OF DEMOGRAPHIC PROCESSES IN THE FERGANA REGION
items: COMPARATIVE ANALYSIS OF MORPHOLOGICAL VARIABILITY OF SCHIZOTHORAX EURYSTOMUS KESSLER, 1872 IN THE SHOHIMARDONSOY AND SOKH RIVERS
items: THE GLORIOUS HISTORY OF THE DEPARTMENT OF BOTANY, BIOTECHNOLOGY, AND ECOLOGY
items: DISTRIBUTION AND GENERATION OF THE LEAF BEETLE XANTHOGALERUCA LUTEOLA (MÜLLER, 1766) IN LOCAL ECOSYSTEMS
items: THE STATE OF RESEARCH ON PREDATORY BUGS OF THE FAMILY REDUVIIDAE (HETEROPTERA) IN UZBEKISTAN
items: CURRENT STATE OF NATURAL RESOURCES OF BERBERIS INTEGERRIMA BUNGE IN UZBEKISTAN
items: FIRST RECORDED GEOGRAPHICAL DISTRIBUTION AND BIOLOGY OF EUPROCTIS CHRYSORRHOEA (LEPIDOPTERA: EREBIDAE) IN THE FERGANA VALLEY, UZBEKISTAN
items: BIOCENOTIC INTERACTIONS AND AGROECOSYSTEM ROLES OF PENTATOMOIDEA (HETEROPTERA) STINK BUGS IN THE WESTERN FERGANA REGION
items: SYNTHESIS AND STUDY OF THE COMPLEX COMPOUND OF N-(1H-1,2,4-TRIAZOL-YL) ACETAMIDE WITH ZINC (II) CHLORIDE
items: ENRICHMENT OF LOGON BENTONITE AND ANALYSIS OF MODIFIED ORGANOBENTONITES USING SCANNING ELECTRON MICROSCOPY
items: STUDY OF THE ALKALOID COMPOSITION OF LYRIDENDRON TULIPIFERA L.
items: THE ROLE OF ARTIFICIAL INTELLIGENCE TECHNOLOGIES IN SCIENTIFIC RESEARCH ACTIVITIES
items: “THE EFFECT OF ERBIUM IONS ON SEMICONDUCTOR PHOTODETECTORS: A SILICON MODEL”

THE POSSIBILITY OF APPLYING KHOPIJ TAJPIBALAP OF STATE POLICY IMPLEMENTATION MECHANISMS RELATED TO THE ELIMINATION OF EMERGENCY ENVIRONMENTAL SITUATIONS
type: item
description: This study examines the mechanisms of implementing state policy for mitigating emergency environmental situations and explores international experience in this field. The research analyzes the experience of developed countries such as Germany, the USA, Japan, and South Korea, and assesses the possibilities of adapting their practices to Uzbekistan’s context. The study proposes measures for improving legal, economic, and technological mechanisms. Recommendations are provided on integrating foreign models into Uzbekistan’s environmental risk management system.
subject: Politics
  topic: section
subject: emergency environmental situations, state policy, environmental management, international experience, environmental security, legal mechanisms, economic instruments.
  topic: keywords
creator: Tuxtamish Azizov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-09-15
publication date: 2025-09-15
starting page: 77
ending page: 77
doi: 10.56292/SJFSU/vol31_iss2/a77

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type: item
description: asdfasdf
subject: Pedogogical
  topic: section
subject: asdf
  topic: keywords
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-08-06
publication date: 2025-08-06
doi: 10.56292/SJFSU/vol_iss1/a%p

ABSORPTION CAPACITY OF SALINE SOILS AND CHANGE IN THE COMPOSITION OF CATIONS
type: item
description: In this work, it is presented that in saline soils of different properties, the composition and quantity, as well as the sum of absorbed bases, vary differently depending on the state, i.e., natural saline soils and secondary saline soils of different ages possess the properties of calcium and magnesium saturation. From natural saline soils to secondary ones, there is an increase in absorbed calcium, a decrease in the content of magnesium and sodium.
subject: Agriculture
  topic: section
subject: evolution, anthropogenic, mineralization, salt marsh, adsorption, cation, solonetzes, disclosed complex.
  topic: keywords
creator: G‘ulomjon Yuldashev
creator: Zikirjon Azimov
creator: Inimjon Mamajonov
creator: Sultonxuja Maxramxo‘jayev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 214
ending page: 214

EVALUATING SUBSTRATE TYPES FOR ENHANCED HYDROPONIC STRAWBERRY YIELD AND QUALITY
type: item
description: Strawberries are a widely consumed fruit, valued for their nutritional benefits and sensory qualities, including high levels of bioactive compounds. Traditional soil-based cultivation poses challenges such as limited growing seasons and susceptibility to soil-borne diseases, prompting interest in hydroponic systems for strawberry production. The choice of substrate plays a critical role in hydroponic systems, influencing water retention, aeration, and nutrient availability, which directly impacts plant growth and fruit quality. This study evaluates three substrates coconut coir, perlite, and soil on their effectiveness in enhancing hydroponic strawberry yield and quality. The experiment, conducted in a controlled hydroponic environment, measured growth parameters including stem height, number of leaves, number of flowers, and flowering rate. Results showed that coconut coir outperformed both perlite and soil, with the highest values across all growth parameters. These findings suggest that coconut coir is the most effective substrate for optimizing hydroponic strawberry growth, making it a suitable choice for hydroponic strawberry production systems aiming to maximize yield and fruit quality.
subject: Biology
  topic: section
subject: Hydroponics, substrates, perlite, coconut coir, root, water retention
  topic: keywords
creator: Durdigul Botirova
creator: Muzaffarjon Obidov
creator: Dilfuza Egamberdiyeva
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 237
ending page: 237

A BRIEF RESEARCH HISTORY AND CURRENT SYSTEMATIC STATUS OF THE GENUS SCHIZOTHORAX HECKEL, 1838 (TELEOSTEI: CYPRINIDAE)
type: item
description: The genus Schizothorax represents a group of fish distributed in the mountain rivers of Asia and is distinguished from other cypriniforms by its complex taxonomic history. This article provides a chronological analysis of the research history of Schizothorax species. Between 1832 and 2022, more than 100 species and subspecies were described within this genus; however, over time, the taxonomic status of most of them has changed. At present, 59 of these taxa are considered valid. Furthermore, the article analyzes the current systematic status of the genus Schizothorax, noting the presence of 70 species. It also highlights priority research directions for taxa with complex taxonomic status.
subject: Scientific information
  topic: section
subject: freshwater fish, taxonomy, cypriniform fish, species description, Schizothorax, synonymy.
  topic: keywords
creator: Ominaxon Gafurova
creator: Sharofiddin Xalimov
creator: Baxtiyor Sheraliyev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 236
ending page: 236

ICHTHYOFAUNA OF THE KARA DARYA: BEFORE AND AFTER THE INTENSIVE IMPACT OF ANTHROPOGENIC FACTORS
type: item
description: The Kara Darya is one of the most significant rivers in the Fergana Valley, playing a crucial role in the formation of the region’s ichthyofauna. Since the second half of the 20th century, the impact of anthropogenic factors on the river has increased significantly. The construction of water dams has severely hindered fish migration. Additionally, after the 1970s, alongside fish species intentionally introduced from the rivers of the Far East for acclimatization, invasive species that were inadvertently introduced also contributed to a dramatic shift in the composition of the ichthyofauna of the Kara Darya. Furthermore, species that were once present in the river, such as Acipenser nudiventris, Pseudoscaphirhynchus fedtschenkoi, and Capoetobrama kuschakewitschi, have become entirely extinct in the Syr Darya basin. Recent studies confirm the presence of 28 fish species in the middle and lower reaches of the Kara Darya, belonging to six orders, 14 families, and 26 genera. This study examines the ichthyofaunal composition of the Kara Darya, its historical and recent changes, and the factors influencing fish diversity in the river.
subject: Scientific information
  topic: section
subject: Kara Darya, ichthyofauna, anthropogenic impact, fish diversity, invasive species, acclimatization, fish migration, water basin.
  topic: keywords
creator: Dildoraxon Komilova
creator: Baxtiyor Sheraliyev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 234
ending page: 234

EVOLUTION OF MOUNTAIN LAKES, GENETIC CLASSIFICATIONS, AND SPECIFIC FEATURES
type: item
description: Mountain lakes are widespread in all mountain regions of the Earth. They vary significantly from each other in their origin (genesis), as well as in the shape and size of their lake basins. This is primarily because, with increasing altitude in mountain areas, natural conditions (including geological, geomorphological, hydrometeorological) and the ongoing natural-geographical processes (denudational, gravitational, hydrological, hydrogeological, glaciogenic, fluvioglacial, and others) manifest in diverse ways. In connection with this, this article analyzes the formation conditions, evolution, genetic classifications, and specific features of mountain lakes.
subject: Geography
  topic: section
subject: lake classifications, mountain lakes, glaciogenic lakes, tectonic lakes, volcanic lakes, dammed lakes, glacial lakes, karst lakes, suffosion lakes, thermokarst lakes, meteorite lakes, mudflows.
  topic: keywords
creator: Ravshan Pirnazarov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 232
ending page: 232

DEMOGRAPHIC ACTIVITY OF THE POPULATION AS A SOCIO-GEOGRAPHICAL OBJECT
type: item
description: The article examines fundamental changes in modern demographic processes, their specific aspects, territorial and geographical changes in the demographic activity of young people, the essence of state youth policy. The influence of the human factor, socio-economic processes on the age and gender composition and qualitative changes in the economic development of countries in the era of globalization is analyzed. The article also highlights the content of the concept of demographic activity of the population and its modern significance in the life of society.
subject: Geography
  topic: section
subject: Demographic activity, demographic processes, human factor, birth rate, mortality, marriage, divorce, migration, demographic factors.
  topic: keywords
creator: Dilshoda Yuldasheva
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 229
ending page: 229

TECHNOLOGY FOR PREPARING A NUTRIENT MEDIUM FOR MICROALGAE (EXAMPLE OF ANKISTRODESMUS)
type: item
description: This article discusses the cultivation environments and preparation technologies of microscopic aquatic plants, particularly the Ankistrodesmus species. Aquatic plants are of significant ecological and economic importance, widely utilized in various industries such as food, biofuels, and others. The article provides a detailed description of theoretical and practical aspects of plant cultivation in artificial environments, the preparation of nutrient media, and methods for stimulating plant growth under the influence of sunlight. Additionally, it covers the composition of nutrients used in the cultivation of Ankistrodesmus, sterilization processes, and scientific methods for monitoring plant growth. Special attention is given to the photosynthetic activity of microscopic aquatic plants and their use in industry, as well as their contributions to new biotechnologies and ecological sustainability.
subject: Biology
  topic: section
subject: Ankistrodesmus, biofuel, “Chu-13” nutrient medium, culture medium, aquarium, optimal growth, spectrum, transesterification.
  topic: keywords
creator: Farhodjon Mingboyev
creator: Saidkamol Xaydarov
creator: Muzaffarjon Obidov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 213
ending page: 213

ECONOMIC FACTORS AFFECTING POPULATION DISTRIBUTION
type: item
description: The article analyzes economic factors that influence the settlement of the population in the region. It is argued that economic factors are the most influential in determining the location in a modern market economy. Also, each of the economic factors (the level of development of industry and industrialization, the development of agriculture and rural population, transport infrastructure and landscaping, employment and the state of the labor market, housing prices and housing policy) was considered separately.
subject: Geography
  topic: section
subject: Economic factor, social mobility, population distribution, population density, rural settlements, population distribution, lifestyle of the population, infrastructure.
  topic: keywords
creator: Xayitboy Abduvaliyev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 228
ending page: 228

BIBLIOMETRIC ANALYSIS OF SCIENTIFIC RESEARCH ON THE GENUS LEPIDOSAPHES
type: item
description: In this study, a bibliometric analysis of scientific research dedicated to the genus Lepidosaphes was conducted. During the research, articles published in the Scopus, Web of Science, and PubMed databases as of March 2025 were analyzed. Based on the results of the bibliometric analysis, the publication dynamics by years, leading journals, active authors, and leading countries in terms of the number of published scientific works in this field were identified. The analysis results indicate that in recent years, the number of scientific studies on the genus Lepidosaphes has significantly increased, highlighting the high relevance of the topic at the international level.
subject: Biology
  topic: section
subject: Lepidosaphes, bibliometric analysis, Scopus, Web of Science, PubMed, scientific publication trends, international research.
  topic: keywords
creator: Ozodbek Sobirov
creator: Xolidaxon Kaxxorova
creator: Sarvinozxon Tojimamatova
creator: O‘g‘iloy Turg‘unova
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 212
ending page: 212

MORPHOLOGICAL AND ECOLOGICAL FEATURES OF APHID ACYRTHOSIPHON PISUM (HARRIS, 1776) (using the example of Northern Fergana)
type: item
description: The article presents the results of a study on “The features of morphoecological adaptation of phytophages to their habitat and food resources.” Using mathematical and statistical methods and on the basis of morphometric features of Acyrthosiphon pisum samples, which is the main pest of chickpeas, the variability of the diversity of individuals in the regions was determined. The geographical and ecotopic variability of phytophages in desert, rainforest and foothill areas was statistically analyzed, and it was also proved that the aphid Acyrthosiphon pisum significantly differs in 9 morphometric features, in accordance with Studenta criteria (tst=2.9; tf>tst or R>0.01).
subject: Biology
  topic: section
subject: Acyrthosiphon pisum, variability, geographical and ecotopic variability, Student's criterion, agrocenosis of chickpeas, Namangan
  topic: keywords
creator: Shoiraxon Yusupova
creator: Islomjon Zokirov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 211
ending page: 211

ON THE RECORD OF CIDARIA DISTINCTATA STAUDINGER, 1892 (LEPIDOPTERA: GEOMETRIDAE, LARENTIINAE) IN THE FERGANA VALLEY
type: item
description: This article presents information on the record of Cidaria distinctata (Staudinger, 1892), belonging to the subfamily Larentiinae of the family Geometridae, in the entomofauna of the Fergana Valley. The species was first described by the German entomologist Otto Staudinger in 1892 based on specimens from the Samarkand and Margilan regions. Although subsequent records of C. distinctata were reported from Turkmenistan, Tajikistan, Uzbekistan (Tashkent region), Kazakhstan, and Kyrgyzstan, no other records have been reported from the Fergana Valley since its initial detection in 1892. Research conducted in 2024 clarified the species' distribution and reconfirmed its presence in the entomofauna of the Fergana Valley. The wingspan of C. distinctata is approximately 24 mm, with yellow forewings having a dark brown basal area and a distinctive dark transverse band in the central region. Photographs of specimens collected from the vicinity of Quvasoy city, Fergana region, as well as specimens collected by Norbert Keil and co-authors from the Northern Tien Shan region of Kyrgyzstan, are provided.
subject: Biology
  topic: section
subject: Central Asia, Fergana Valley, Lepidoptera, Geometridae, Larentiinae, Cidaria distinctata, morphology, distribution.
  topic: keywords
creator: Malikjon Shermatov
creator: Dilafruz Almatova
creator: Bekzod Abdikaxorov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 210
ending page: 210

COMPARATIVE ANALYSIS OF MORPHOLOGICAL VARIABILITY OF ISKANDARIA PARDALIS (TURDAKOV, 1941) IN THE KARATAG AND TUPALANG RIVERS
type: item
description: The morphological variability of Iskandaria pardalis, one of the endemic fish species of the Amu Darya basin, was studied. Morphometric measurements of specimens collected from the Karatag and Tupalang rivers were analyzed using the Student’s t-test. Out of 32 characters examined, no significant differences were found in 25 of them, while the remaining 7 characters showed statistically significant differences at the 1% significance level. In addition, morphological variability between the populations was assessed using the coefficient of variation. According to the results, specimens from the Tupalang River exhibited moderate variability in caudal fin length, caudal peduncle length, and the distance between pelvic and anal fins, whereas the same characters in specimens from the Karatag River showed low variability. Furthermore, the lengths of the maxillary barbels in Iskandaria pardalis showed high variability in the Tupalang River population and moderate variability in the Karatag River population.
subject: Biology
  topic: section
subject: freshwater fish, endemic species, Amy Darya basin, Iskandaria, morphology, Student’s t-test.
  topic: keywords
creator: Dilorom Fayziyeva
creator: Baxtiyor Sheraliyev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 209
ending page: 209

SOME ASPECTS OF LABOR MIGRATION IN JIZZAKH REGION
type: item
description: This article examines labor migration, one of the main types of mechanical population movement, its relevance, and territorial structure. The primary focus is on the causes of labor migration, as well as its territorial and sectoral composition.
subject: Geography
  topic: section
subject: Migration, population, labor migration, abroad, labor resources, external migration, demographic processes, population structure, donor country, developed countries, migration flows.
  topic: keywords
creator: Zulxumor Tojieva
creator: Kamola Omanova
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 220
ending page: 220

REGIONAL STRUCTURE OF FOREIGN MIGRATION IN SURKHANDARYA REGION
type: item
description: This article studies and analyzes the migration process of the population and its territorial composition in the Surkhandarya region, as well as presents ideas and comments on the theoretical foundations of studying the migration process. In particular, the formation of external migration of the population in the Surkhandarya region and the factors influencing its development are discussed. Also, this research work provides a brief description of the study of the migration process by foreign and Uzbek scientists.
subject: Geography
  topic: section
subject: migration, migrant, external migration, labor migrants, international migration, emigration, immigration, factors, migration dynamics.
  topic: keywords
creator: Sadriddin Xursanov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 219
ending page: 219

METHODS FOR GEOECOLOGICAL ASSESSMENT OF REGIONAL TOURIST AND RECREATIONAL SYSTEMS
type: item
description: The article studies the theoretical and methodological foundations of the formation and development of regional tourist and recreational systems, methods for organizing regional tourist and recreational systems and assessing their effectiveness, the role and importance of regional tourist and recreational systems in the effective use of tourist and recreational potential. Also, methods for assessing regional tourist and recreational systems are analyzed.
subject: Geography
  topic: section
subject:
  topic: keywords
  value: regional tourist and recreational system, tourism, recreation, geoecological assessment, analytical hierarchy, integral assessment, determination of tourist capacity, sustainability indicator system, GIS, cluster.
creator: Elyorbek Maxkamov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 218
ending page: 218

TERRITORIAL FEATURES OF THE DEVELOPMENT OF DEMOGRAPHIC PROCESSES IN THE FERGANA REGION
type: item
description: The article analyzes the demographic processes of Fergana, one of the eastern regions of Uzbekistan, in recent years, and also highlights the territorial features of the region. A detailed description of the natural-geographical and socio-geographical living conditions of the region's population, influencing demographic processes, is given. The article draws appropriate conclusions based on the results obtained.
subject: Geography
  topic: section
subject: Demographic processes, birth rate, death rate, migration, demographic factors, population size, relative growth, cities, towns.
  topic: keywords
creator: Yusupjon Ahmadaliyev
creator: Dilshoda Yuldasheva
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 217
ending page: 217

COMPARATIVE ANALYSIS OF MORPHOLOGICAL VARIABILITY OF SCHIZOTHORAX EURYSTOMUS KESSLER, 1872 IN THE SHOHIMARDONSOY AND SOKH RIVERS
type: item
description: The morphological variability of Schizothorax eurystomus, a native fish species of Uzbekistan’s water bodies, was investigated. Morphometric measurements of fish specimens collected from the Shohimardonsoy and Sokh rivers were analyzed using the Student’s t-test. Among the 29 examined traits, no significant differences were observed in 26, while the remaining 3 traits exhibited statistically significant differences at a 1% significance level. Additionally, the degree of morphological variability between populations was assessed using the coefficient of variation. The results indicated that in specimens from the Shohimardonsoy River, the length of the anal fin base and the interorbital distance showed low variability, whereas in the Sokh River specimens, these traits exhibited moderate variability. Furthermore, traits such as pectoral fin length, pelvic fin length, caudal peduncle length, and caudal peduncle depth displayed moderate variability in the Shohimardonsoy River population but low variability in the Sokh River population. Conversely, body depth and eye diameter, which demonstrated high variability in the Sokh River population, exhibited moderate variability in specimens from the Shohimardonsoy River.
subject: Biology
  topic: section
subject: freshwater fish, common species, Syr Darya basin, Schizothorax, morphology, Student’s t-test.
  topic: keywords
creator: Ominaxon Gafurova
creator: Sharofiddin Xalimov
creator: Baxtiyor Sheraliyev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 205
ending page: 205

THE GLORIOUS HISTORY OF THE DEPARTMENT OF BOTANY, BIOTECHNOLOGY, AND ECOLOGY
type: item
description: This article provides information on the history of the Department of Botany, Biotechnology, and Ecology, which was established as part of one of the first higher educational institutions in our republic, Fergana State University. The historical roots and stages of development of the department are inextricably linked with the history of the university. The department has trained highly qualified specialists not only for the Fergana Valley but also for various regions of Uzbekistan, as well as for a number of foreign countries. Special attention is given to its establishment, long-standing history, and current state, as well as the activities of teachers and mentors who are true devotees of science and education. The faculty of the department makes a significant contribution to the training of highly qualified educators, scientists, and leaders who selflessly work not only in educational institutions but also in various sectors of the national economy for the prosperity of our country.
subject: Biology
  topic: section
subject:
  topic: keywords
  value: higher pedagogical educational institution, teacher-botanist, department of botany, department of ecology, florist, geobotanist, Academy of Sciences of the Republic of Uzbekistan, PhD, associate professor, professor, academician.
creator: Muxayyo Akbarova
creator: Zohidaxon Yusupova
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 204
ending page: 204

DISTRIBUTION AND GENERATION OF THE LEAF BEETLE XANTHOGALERUCA LUTEOLA (MÜLLER, 1766) IN LOCAL ECOSYSTEMS
type: item
description: This article examines the distribution, biological characteristics, and generation turnover of the leaf beetle Xanthogaleruca luteola (Müller, 1766) under conditions of the Fergana Valley. The study was conducted from April to November 2024 in both field and laboratory settings in the Fergana, Namangan, and Andijan regions. Special attention is paid to the beetle’s morphological traits—body structure, coloration, and diagnostic features—as well as its egg-laying behavior, larval stage, feeding habits, and pupal duration. The findings indicate that X. luteola may produce two or three generations per season, and the simultaneous presence of various developmental stages can cause significant damage to local ecosystems.
subject: Biology
  topic: section
subject: Xanthogaleruca luteola (Müller, 1766), phytophagous beetles, Chrysomelidae family, pronotum, elytra, development cycle, larva, metamorphosis.
  topic: keywords
creator: Muxayyoxon Zohidova
creator: Gulnora Zokirova
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 203
ending page: 203

THE STATE OF RESEARCH ON PREDATORY BUGS OF THE FAMILY REDUVIIDAE (HETEROPTERA) IN UZBEKISTAN
type: item
description: This article presents the results of a comparative analysis of predatory bugs of the family Reduviidae studied in Uzbekistan based on literature data. In addition, scientific research conducted in various regions of southern Uzbekistan (Muborak, Nishon, Karshi, and Yakkabog in Kashkadarya Region, as well as Termez and Sariosiyo in Surkhandarya Region) recorded 7 species of predatory bugs belonging to 4 subfamilies and 7 genera of the family Reduviidae. The article also provides information on the degree of study of predatory bugs in different regions of Uzbekistan and their bioecological characteristics.
subject: Biology
  topic: section
subject: Heteroptera, assassin bugs, family, genus, species
  topic: keywords
creator: Maftuna Valiyeva
creator: Gulnara Mirzayeva
creator: Dilshod Musayev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 202
ending page: 202

CURRENT STATE OF NATURAL RESOURCES OF BERBERIS INTEGERRIMA BUNGE IN UZBEKISTAN
type: item
description: The article presents data on the current state of natural resources of B. integerrima in the Jizzakh, Surkhandarya, Tashkent, and Fergana regions of the republic. The average area with reserve value is 106.0 hectares on plots of 300.0 hectares. The biological reserves of the species amount to 29.09 tons, the exploitable reserves are 15.42 tons, and the annual possible harvest volume is 0.762 tons. The highest resource potential indicators of the plant are observed in the Pishagar district of the Zamin region (0.149 tons), the Uriklisoy district (0.128 tons), the Kizil-Naur district (0.129 tons) of the Boysun region, and the Aqsok-Ota district (0.145 tons) of the Bostanlik region. According to cluster analysis, the regions are divided into 3 groups based on the plant resource indicators. The main factors affecting the change in the plant's yield are altitude above sea level (r=0.64) and air temperature (r=0.87), which show a strong correlation. This is related to the plant's life form and its biological characteristics.
subject: Biology
  topic: section
subject: Berberis integerrima, resource, annual volume, correlation, cluster, Uzbekistan.
  topic: keywords
creator: Azizbek Maxmudov
creator: Ozodbek Abduraimov
creator: Valijon Maxmudov
creator: Akmal Allamurotov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 201
ending page: 201

FIRST RECORDED GEOGRAPHICAL DISTRIBUTION AND BIOLOGY OF EUPROCTIS CHRYSORRHOEA (LEPIDOPTERA: EREBIDAE) IN THE FERGANA VALLEY, UZBEKISTAN
type: item
description: This study provides the first confirmed record of Euproctis chrysorrhoea Linnaeus, 1758 (Brown-tail Moth) in Uzbekistan’s Fergana Valley, thereby extending its known distribution into Central Asia. Field surveys at multiple sites in Quvasay (Kokilon – ~40°18'21"N, 71°54'50"E; Sufon – ~40°22'37"N, 71°57'11"E), Fergana District (Satkak – ~40°24'24"N, 71°41'59"E), Kuva District (Akbarobod – ~40°32'59"N, 71°55'27"E), and Mingbuloq District (~40°24'24"N, 71°41'59"E) revealed adult moths on economically important fruit trees (e.g., Prunus cerasus, Prunus domestica, Malus domestica, and Pyrus communis). A total of 71 adult specimens (51 males, 20 females) were collected, from which 7 were selected for detailed morphological analysis. Simple descriptive statistics of key traits (e.g., wingspan, 37.6 ± 1.7 mm) indicate consistency with established descriptions. Observations of the species’ life cycle and host plant damage suggest successful adaptation to the region’s continental climate and orchard ecosystems, emphasizing the need for integrated pest management (IPM). While these findings provide critical baseline data, multi-year studies and broader geographic sampling are essential to evaluate long-term population dynamics and ecological impacts more thoroughly.
subject: Biology
  topic: section
subject: Euproctis chrysorrhoea, Brown-tail Moth, Fergana Valley, Uzbekistan, invasive species, Lepidoptera, pest management, orchard ecosystems
  topic: keywords
creator: Mokhidabonu Masodikova
creator: Gulnora Zokirova
creator: Islomjon Zokirov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 200
ending page: 200

BIOCENOTIC INTERACTIONS AND AGROECOSYSTEM ROLES OF PENTATOMOIDEA (HETEROPTERA) STINK BUGS IN THE WESTERN FERGANA REGION
type: item
description: This study examines the species composition, ecological characteristics, and role of Pentatomoidea (Heteroptera) stink bugs in the agroecosystems of Western Fergana. The research analyzed the significance of phytophagous and entomophagous species in various ecosystems, their role in food chains, and their impact on agroecosystems. The population dynamics of these bugs, their effects on agricultural crops, and the efficiency of entomophagous species in biological control were assessed. The obtained results are essential for ensuring agroecosystem stability, developing biological pest control strategies, and effectively organizing regional entomofauna monitoring. The study findings were analyzed based on scientific literature and field observations.
subject: Biology
  topic: section
subject: Pentatomoidea, Heteroptera, stink bugs, phytophagous, entomophagous, agroecosystem, food chain, biological control, entomofauna
  topic: keywords
creator: Mirmuxsin Mahmudov
creator: Islomjon Zokirov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 208
ending page: 208

SYNTHESIS AND STUDY OF THE COMPLEX COMPOUND OF N-(1H-1,2,4-TRIAZOL-YL) ACETAMIDE WITH ZINC (II) CHLORIDE
type: item
description: Methods of synthesizing complex compounds of N-(1H-1,2,4-triazol-yl) asetamide with Zn(II) chloride was developed, and the composition and structure of the synthesized complex compounds were studied using modern physical and chemical research methods. It was found that the ligand is coordinated through the second nitrogen of the triazole ring and the oxygen atoms of the acetamide group in the reactions of N-(1H-1,2,4-triazol-yl) asetamide complex formation. [Zn(L)2(H2O)2]Cl2 crystals have a monoclinic molecular structure, in which the metal atom forms a six-membered chelate ring with the nitrogen of the triazole ring and the oxygen atoms of the acetamide group and the oxygen atoms of water. In the [Zn(L)2(H2O)2]Cl2 complex, the bond lengths of Zn1-N3, Zn1-O1 and Zn1-O2 are 1.937, 2.024 Å and 2.40 Å, and the angles of N3-Zn1-N4 are 91.32°(19). The largest angular values ​​belong to the angles of N3-Zn1-N3, O1-Zn1-O1 and N4-Zn1-N4, which are 180.0°. The coordination number of the central copper atom is six and it is hybridized in the sp3d2 state. Intermolecular hydrogen bonds are formed between the hydrogen atom of the imine group of the 3-acetylamino-1,2,4-triazole ligand and the oxygen of water. The positive charge of the zinc ion is compensated by the chloride acid ligand in the anionic state.
subject: Chemistry
  topic: section
subject: N-(1H-1,2,4-triazol-3-yl)acetamide, zinc chloride, ligand, infrared spectroscopy, scanning electron microscope, X-ray structural analysis, thermal analysis.
  topic: keywords
creator: Zilola Chalaboyeva
creator: Ma'rufjon Jalilov
creator: Surayyo Razzoqova
creator: Shahnoza Kadirova
creator: Shavkatjon Turg‘unboyev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 193
ending page: 193

ENRICHMENT OF LOGON BENTONITE AND ANALYSIS OF MODIFIED ORGANOBENTONITES USING SCANNING ELECTRON MICROSCOPY
type: item
description: This study investigates the effect of modifying bentonite with various surfactants on its morphological properties and elemental composition. Bentonite is a mineral with high adsorption capacity, and organic modification methods are used to improve its chemical and physical properties. In this research, bentonite samples were prepared and modified with surfactants such as tetradecyltrimethylammonium bromide (TDTMAB), octadecyltrimethylammonium bromide (ODTMAB), and dokocantrimethylammonium bromide (DKTMAB). The impact of modification on bentonite composition was evaluated using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The results showed that modified samples exhibited changes in particle structure and a reduction in the degree of agglomeration. The increase in the hydrocarbon chain length of organic modifiers contributed to a more compact arrangement of bentonite particles and enhanced hydrophobic properties. The findings of this study help expand the applications of bentonite in various industries, including environmental purification, pharmaceuticals, and petrochemistry. It has been established that bentonite modification significantly improves its functional properties.
subject: Chemistry
  topic: section
subject: : bentonite, modification, surfactants, SEM, EDS, morphology, adsorption.
  topic: keywords
creator: Muhammadrajab No‘monov
creator: Saodat Mirsalimova
creator: Aziza Abdikamalova
creator: Dilmurod Ergashev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 191
ending page: 191

STUDY OF THE ALKALOID COMPOSITION OF LYRIDENDRON TULIPIFERA L.
type: item
description: This article presents the results of a study of the alkaloid composition of Liridendron tulipifera L. The composition of Liridendron tulipifera L was studied using UV, IR, and mass spectrometry. The structures of the identified alkaloids were confirmed using the above methods.
subject: Chemistry
  topic: section
subject: Liridendron tulipifera L, alkaloid, UV, IR, Lirinin, Lirinidin, leaf, root, stem
  topic: keywords
creator: Shuxratjon Mamajonov
creator: Nigoraxon Odilxo‘jazoda Baxtiyorxo‘ja
creator: Sarvinozxon G‘ulomova
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 188
ending page: 188

THE ROLE OF ARTIFICIAL INTELLIGENCE TECHNOLOGIES IN SCIENTIFIC RESEARCH ACTIVITIES
type: item
description: This article comprehensively analyzes the role of artificial intelligence (AI) technologies in scientific research. Using systematic review methods, the effectiveness of machine learning (ML) and deep learning (DL) methods in scientific processes, the advantages and limitations of using generative AI tools (ChatGPT, Gemini, Scispace, Perplexity) are discussed. The results show that AI technologies provide significant advances in working with big data, advancing scientific hypotheses, and automating laboratory processes. However, issues such as algorithmic bias, the "black box" problem, hallucinations, plagiarism, confidentiality, and copyright continue to concern the scientific community. In particular, this article puts forward recommendations for the full and rational use of AI, ensuring transparency and fairness in scientific processes, and operating within the rules of scientific ethics.
subject: Scientific information
  topic: section
subject: artificial-intelligence technologies; research process; generative artificial intelligence; scientific writing; ChatGPT.
  topic: keywords
creator: Islomjon Zokirov
creator: Baxodir Axmedov
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 178
ending page: 178

“THE EFFECT OF ERBIUM IONS ON SEMICONDUCTOR PHOTODETECTORS: A SILICON MODEL”
type: item
description: This article explores the potential of improving the efficiency of semiconductor photodetectors by doping silicon with erbium ions. During the study, photoluminescence and photo-conductivity spectra were analyzed, and the impact of erbium ions on the optical and electrical properties of silicon was examined. The results suggest that silicon doped with erbium can serve as an effective material for optoelectronic devices, particularly for photodetectors operating in the infrared range.
subject: Physics and technology
  topic: section
subject: Semiconductors, Photodetectors, Erbium ions, Silicon model, Photoluminescence, Photoconductivity, Ion implantation, Optical properties, Electrical properties.
  topic: keywords
creator: Mirjalol Yuldashev
rights: Copyright (c) 2025 Scientific journal of the Fergana State University https://creativecommons.org/licenses/by-nc-nd/4.0
date: 2025-07-28
publication date: 2025-07-28
starting page: 177
ending page: 177