bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on protection of forest plants from pests inhabited in the dry part of the Aral Sea
Authors: Khujaev O , Obidjanov D , Mukhsimov N , Nazarova O , Turatbekova A , Tokhtamurodova N 
Published: March 2023

Abstract
34 types of pests were found on haloxylon and other sand-retaining plants planted in the dry area of the Aral Sea. The main dominant species of these pests are large and small haloxylon humpback grasshoppers. When the insecticide Imitrin 20% sus.K. was tested on humpback grasshoppers at 0.05 L/ha distribution patter measurement against 2-3-year-old nymphs of grasshoppers and 0.1 L/ha against 4-5-year-old nymphs: after 3 hours - 89.2-87.4%, 24- 95.1-94.0% after 72 hours - 96.3-95.6% biological efficiency was obtained respectively. This preparation has been recommended to produce at the specified measures and periods.
Biodiagnostic survey of salt soils of the desert zone of Uzbekistan
Authors: Saidova M , Gafurova L , Kodirova D , Shadiyeva N , Ergasheva O 
Published: March 2023

Abstract
The unfavorable climatic conditions of the desert territory are the reason for the reduced biological activity of the studied soils; the highest BA was observed mainly in spring. This is due to the presence of favorable hydrothermal conditions and nutrients for the occurrence of biological processes at this time, in summer there is a slight decrease and by autumn a slight increase in the biological activity of the soil. Also, it was found that the change in the general biological activity of soils depends on the content of humus and nutrients in them, the mechanical composition, the duration of irrigation and the degree of salinity. Thus, the results show that the integral indicator of soil biological activity can be widely used in assessing the response of the region’s soils to external influences, as well as the effectiveness of measures taken to preserve and increase soil fertility.
Correlation between family and range value economic traits in cotton
Authors: Kholmurodova G R , Yuldasheva R A , Barotova A R , Yakubjanova N A , Khakimova M M , Aktamova I A 
Published: March 2023

Abstract
It is stated that interdependence is the main feature of the heredity of quantitative traits of cotton and other agricultural plants. Clearly, the dependence of traits is explained genetically in two ways: pleiotropic effects, in which a change in one gene causes changes in several traits, and gene fusion. In this research, it was aimed at investigating correlation between family and range value economic traits in cotton. For this research, laboratory and field experiments were undertaken towards taking results and doing correlation analysis. According to the research results, it was appropriate to use O-609-610, O-105-108, O-117-120 families and T-482-483/07 T-814-815/07 lines in practical selection. However, it was necessary to continue the research on achieving moderate and strong correlations from the weak level of negative correlation (in this place (-) is considered appropriate). Compared to the convergent hybrids obtained on the basis of the transgressive recombination principle, convergent hybrids obtained by the combined transgressive recombination principle and incomplete recrossings have been found to have relatively high ripening speed, wilt tolerance and fiber quality indicators.
Econometric analysis and forecast of the development of the fruit and vegetable network in the conditions of digitalization of the economy
Authors: Abduvasikov A A , Mengnorov A A , Achilov M U 
Published: March 2023

Abstract
In the article, the dynamics of the development of the fruit and vegetable industry in the republic under the conditions of the digitalization of the economy and the pandemic, the analysis of the statistical indicators of the results achieved in the industry, the specific aspects of the industry and the main directions of the priority development of the fruit and vegetable industry, as well as the issues of the development of the production and export of fruit and vegetable products, are researched. Also, in the article, the gross yield of fruit and vegetable products and the factors that strongly affect it are analyzed and forecasted using the correlation-regression analysis methods of econometric modeling, and practical recommendations and suggestions are given.
Investigating the properties of cotton fabric coating with polyacrylic rubber and using this polyacrylic rubber coated fabric as an alternative to polyethylene bags
Authors: Kawser Md. Nakibul , Rahim Abdur , Emon Jabed Hossen , Bhattacherjee Jinia , Dutta Pranay , Khujaev Otabek , Karimov Sarvarjon 
Published: March 2023

Abstract
Cotton fabric coated with polyacrylic rubber can be used as a replacement for polyethylene bags to avoid plastic pollution. In this research, we have investigated the use of polyacrylic rubber with 100% cotton fabric as a finishing agent where 2% of ammonium chloride was used as a catalyst. A pad-dry-cure technique was applied for the preparation of cotton fabric samples varying 6%, 8%, 10%, 12%, and 14% polyacrylic rubber. Tensile strength, tear strength, and bursting strength produced a balanced improvement in properties. After appealing gyro wash on each sample, it is established that the strength of the fabric has decreased slightly. Assessment of these properties has had a good impact on the strength of the fabric making which is a viable substitute for polyethylene bags.
Wastewater treatment using heat-treated defectate and MAP solution
Authors: Azimova D , Salikhanova D , Eshmetov I , Umirov F , Temirov U 
Published: March 2023

Abstract
This article presents the results of quantitative and qualitative characteristics of wastewater from the tailing pond of the Navoi Mining and Metallurgical Combine. Pollutants coming from the processing of ores were determined. The studied effluents had high concentrations of dissolved salts and suspended solids. Laboratory tests were carried out for wastewater treatment using samples of thermally processed defecate and MAP solution. It has been shown that thermal processed defecation and monoammonium phosphate (MAP) solution are effective for wastewater treatment from polluting ions. The consumption of thermally processed defecation was 10 g/l and 25% MAP was 15 ml/l, while the degree of reduction of the elements Ca, Mg, K, Be, AI, Mn, Ni, Cu, Zn, As, Se, Sr, Mo, Pb was 87.82, 90.64, 70.72, 96.35. 92.64, 99.79, 63.69,18.95, 91.12, 98.38, 70.85, 78.56%.
The effect of sowing time and sowing rate on the duration of developmental phases and growth period of rice varieties
Authors: Urazmetov K K , Abdumajitov A A , Meyliyeva N N 
Published: March 2023

Abstract
Today, with the world’s growing population, global climate change, rising temperatures, increasing rainfall in some areas, and contrarily, severe droughts in some areas, it is becoming increasingly difficult to grow abundant and high-quality farming crops. This means that the issue of food security will become more complicated in the future. One of the priorities in solving this problem is to modernize the agricultural sector by using intensive agro-technologies in the cultivation of agricultural products. Due to the fact that the length of the day in the climatic conditions of our country is different, very short and very cold in winter, and very hot and extremely long in summer, paddy is naturally adapted to spring planting and ripening in autumn (to make offspring). In the second half of April, when rice planting begins, the length of the day is around 13,5 hours, with the longest day being 15,1 hours on June 20-22 and 12,5 hours in mid-September when rice is harvested.
Assessment of drought stress impact on winter wheat using landsat 8 images: comparison of field data and vegetation indices
Authors: Usmanov R , Madaminov R , Jumaniyazov F , Abdurakhimov U , Bakhodirov Z , Sobirov E , Sagdiev M T 
Published: March 2023

Abstract
In recent years, the use of remote sensing (RS) and geographic information systems (GIS) in observing changes in crop development phases and assessing the impact of various stress factors has been developing around the world. Vegetation indices developed by scientists in the field are widely used in the observation and monitoring of crop conditions, stages of development, biomass and productivity, as well as stress conditions related to water and nutrients. The spectral reflectance characteristics of crops vary under different drought stress conditions. In this article the effect of water shortage on the growth and development of winter wheat is analyzed using satellite data. Within the framework of the research transpiration intensity, water deficiency and water-holding capacity of leaves of winter wheat were studied in climatic conditions of Khorezm region, Uzbekistan.
Evaluation the effect of different doses of mineral fertilizers on the height growth of forest seedlings: A case study of Chatkal ridge
Authors: Mamutov B 
Published: March 2023

Abstract
This article describes the effects of different mineral fertilizer doses on the growth and development of seedlings of four forest-forming species grown with a closed root system on the western and southern slopes of the Chatkal ridge. The results show that different fertilizer doses have various effects on different types of seedlings. The effect of fertilizers on improving the growth of forest crops in the first year was not fully manifested, since growth buds were laid a year before fertilization against a natural background of growth conditions. Plants that had received more nutrients the year before grew the year ahead after fertilization, and a beneficial effect became apparent. The rate of fertilizer N90P90 K60 was more effective on pine growth on the western slope, while N120P180K60 showed high results on the southern. Oak on both slopes was better affected by a lower dose of fertilizer, hawthorn on both slopes by higher doses, and both doses had roughly the same effect on an apple tree. Therefore, for the apple trees, it can be recommended, as for oak, the depositing of a smaller dose due to the lower cost.
Theoretical study of the effect of improving cleaning efficiency and fiber quality from a double-drum fiber cleaner
Authors: Egamberdiev F , Jumaniyazov K , Abbazov I , Yodgorova H 
Published: March 2023

Abstract
This paper studies the effect of the arrangement of saw cylinders in a double-drum fiber cleaner in a checkerboard pattern on the cleaning efficiency and fiber quality. That is, as a result of the experimental work on the manufacture of a double-drum fiber cleaner, the distance between the saw axes in the saw cylinder of the cleaner is 7 mm, and the saw axes in the second saw cylinder are in line with the saw axis in the first saw cylinder, so the fiber cleaned from the first saw cylinder completely blocked by saws in the second cylinder. It has been studied that the fibers not processed by the second saw cylinder are added to the total purified fiber in the transit state after the first saw cylinder, which causes a decrease in the quality of the resulting fiber. The arrangement of the axes of the saws in the first saw cylinder and in the second saw cylinder in one line is based on the fact that the process of cutting and combing the fiber in the second saw cylinder is reduced and the cleaning efficiency of the cleaner is reduced. In order to drastically reduce the transit state of the part of the fiber peeled from the first saw cylinder, in order to ensure its transfer to the second saw cylinder, as well as for efficient cutting and carding of the fiber in the second saw cylinder, the distance between the axes of the saws in the second saw cylinder is 2-4 mm compared with the distance between the axes of the saws in the first saw cylinder was changed to mm and studied.
Creation of goods with high fiber quality from the selection of varieties belonging to G.Hirsutum L. species
Authors: Kholmurodova G R , Mirkhomidova N A , Yuldasheva R A , Nazarova M B , Barotova A R , Aktamova I A 
Published: March 2023

Abstract
One of the important problems in cotton breeding is the creation of high-yielding, fast-maturing varieties with high fiber yield and quality and their wide use in production. In the world, the cotton plant occupies a key place in the world textile industry. The purpose of the study was to determine the effectiveness of these methods in creating genetically enriched selection materials based on a comparative study of the heredity, variability and formation of economic traits in cotton hybrids created by different methods of convergent hybridization. The analysis of the homogeneity index showed that the character index of convergent families based on the principle of transgressive recombination ranged from 86.7 % (O-329/30) to 88.3% (O-32/35). In families O-85/90 and O-325/26, it was 87.4% and 87.95%, respectively.
Adaptation of phlegfix simmental cattle to the mountainous climate and formation of breeding and production potential in Uzbekistan
Authors: Shakirov Q , Shokirov A , Sharapatov T 
Published: March 2023

Abstract
Today in Uzbekistan it is important to strengthen the breeding base of cattle, increase the fertility and productivity of cattle. One of the main methods is purebred breeding breeds and crossbreeding with regionalized cattle breeds. Fertilization of Holstein breeds in hot climates, the formation of productive genetic potential of cattle of different genotypes, and the interaction of genotype-environment have not been sufficiently studied. Group I received 20% bloody holstin and 80% bloody simmental cattle obtained by crossing Simmantal cattle with red-and-Holstein breed. In groups II and III purebred phlegfix simmental-red-ola simmental cattle were selected. The cattle in this experiment were cared for in the storage and feeding conditions of the farm in the mountains.
Investigation of local resistance and air velocity in narrowing pipes for the transport of fibrous materials
Authors: Abbazov I , Usmankulov A , Sharopov B 
Published: March 2023

Abstract
In the world, one of the main tasks is to improve the quality of cotton and products from it, the introduction of energy and resource-saving technologies and technical means at enterprises, which make it possible to reduce their cost. In the priorities of the Decree of the President of the Republic of Uzbekistan dated January 28, 2022 No. PF-60 “New Development Strategy of the Republic of Uzbekistan for 2022-2026”, the third priority area called “Advanced development of the national economy and ensuring high growth rates” clarifies the inclusion of a number of tasks in the state program. Air pipes are used in most stages of the primary cotton processing process. In this direction, a scientific base is being created to improve the efficiency of the process of transporting fibrous materials by air, special attention is paid to improving product quality and reducing costs through the creation of automated pneumatic transport systems, and the widespread introduction of modern pneumatic equipment and technology into production is accelerating. Although many studies have been done on the loss of fibrous products during the air transport of cotton and cotton products, some fibrous material is released into the atmosphere. To prevent this, it is necessary to determine the aerodynamic resistances that form in the areas of the changed surface of pneumatic transport pipes, and develop recommendations for their reduction. In this article, based on the results of theoretical and practical studies, local resistances are determined in the zones of narrowing of air pipelines of pneumatic transport, and the change in air speed is presented in graphical form.
Trial results for the production of the improved 5LP linter
Authors: Norboyev U , Sulaymonov R , Sharopov B 
Published: March 2023

Abstract
A pilot-industrial copy of an improved mixer has been developed to implement an effective process of seed raising. The manufactured pilot copy was installed on the 5LP linter in the cotton spinning workshop of the cotton spinning enterprise SANGZOR TEKSTIL LLC, Dostlik district, Jizzakh region, and the linter was improved, comparative research work was carried out with the 5LP linter with a simple construction mixer in the workshop. The studies were carried out at a distance of 8-12 mm between the saw cylinder and the mixer, selected on the basis of theoretical and practical results. During the experimental period, the quality of seeds obtained from the lint of seeds of the Bukhoro-6 variety of selection I improved by an average of 0.37 (abs)% to 0.85 (abs)%, and the quality of down improved by 0.62 (abs) % to 0.78 (abs.)%. Improving the quality of down one class higher, UzDST 645:2016 “Cotton lint. Technical conditions” type I corresponded to type B “Middle” class. Linter performance averaged 47 kg/h to 35 kg/h of seed and 2.8 kg/h to 3.4 kg/h of fluff compared to the existing 5LP linter. The quality of seeds obtained by linting seeds of the III variety of Bukhara-6 selection in the proposed 5LP linter by an average of 0.46 (abs)% to 0.38 (abs)%, the quality of fluff by 0.37 (abs)% improved by 0.25 (abs) %. Produced down is a class higher, UzDst 645:2016 “Cotton lint. Technical conditions”, type II type B was the “Middle” class. It was found that the productivity of the linter is 46-49 kg/h higher for seeds and 3.1-4.0 kg/h for linter than that of the 5LP linter with a simple mixer design. As a result of research work using an improved mixer in a 5LP linter working chamber, installing 6 mm thick rubber on metal sheets in the mixer, while pushing rubber from metal sheets to a distance of 6 mm, so as not to adversely affect the amount of oil extracted from seeds when lintering technical seeds, the distance between the rubber sheets and the saw cylinder was determined to be set at 8-10 mm, and when linting seeds, 12 mm should be left so as not to exceed the specified rate.
Effects of soil salt-leaching terms on growth, development and yield of corn in Uzbekistan
Authors: Toshpulatov Ch , Tukhtashev B , Charshanbiev U , Mavlonov B 
Published: March 2023

Abstract
The issue of growing field crops in saline soils and increasing their resistance to salt remains a topical issue in terms of land reclamation. In saline soils, it is important to increase the resistance of field crops to salinity on the basis of the use of advanced technologies, as well as to pay special attention to soil reclamation. The study shows that the salinity of the soils of the planned area, the lack of saline leaching and the presence of a seasonal salt accumulation process, the problem is solved from a scientific point of view, as well as its complexity. Proper timing of saline leaching is an important reclamation measure in eliminating the negative effects of salt accumulation in saline soils. When washing the soil brine in October-November, a complete leaching of the salt was achieved, resulting in a 17.6% higher biomass than the unsalted variant of the salt. The optimal irrigation rate for corn is determined by soil moisture. The number of irrigations for the biomass was set to 5 times during the growing season. At this irrigation rate, the soil moisture did not fall below 75-80% of the limited field moisture capacity (LFMC) until the oats sprouted. During the growing season, the first watering was started when the plant produced 5-6 leaves.
Parasitic entomophages against plant lice in vegetable agrobioticenose
Authors: Rustamov A A , Kimsanbaev H K 
Published: March 2023

Abstract
The negative impact of pests on world agriculture is estimated at 1.4 trillion dollars, which is 5% of the global gross domestic product. In order to save the crops lost due to agricultural pests in the world, it is of urgent importance to develop effective and fundamentally based control measures against them. In this research, the main studied pests were Aphis craccovora Koch; Aphis gossypii Glow; Brevicoryne brassicae, Lysiphlebus fabarum Marsch, which is parasitic entomophages of Rhopalosiphum nymphaeae and sucking pests. It was found that the parasitic worm Aphis gossypii infects plant juices was on average 79.6 + 0.03. The parasite developed in this type of plant aphids lived for 7.1+0.02 days, the sex ratio was 1:5 (♂:♀). When the mummified and swollen plant aphids were examined due to infection with the parasite, it was found that the degree of damage to the host’s offspring was 67.2%.
Effect of baikal em-1 microbiological fertilizer on growth and development of cotton
Authors: Rakhimova G Kh , Niyazaliev B I , Asatova S S , Bekmuratov S A 
Published: March 2023

Abstract
Level of soil salinity and water scarcity increases from year to year, it is necessary to increase the immune system of crops against diseases, pests and stressors, stable, high even in any unfavorable conditions. In the field experiment, 60-70% of the annual rate of phosphorus fertilizers, 50% of potassium was applied before autumn plowing, the rest of the rates of phosphorus fertilizers were applied together with nitrogen fertilizers during the flowering period, and potassium fertilizer was applied during the tillering period. The results showed that Baikal EM-1 (without mineral fertilizers) was sprinkled before plowing, before sowing seeds, on 3-4 true leaves, during pruning, flowering (10+10+3.0+3.5+3.5 l/ha) in the 8 variant, compared to the control variant (variant 1), the number of bolls decreased by 0.4 units, and the opening of bolls was around 30.0%.
Investigation of air velocity in expanding and contracting pipes for the transport of fibrous materials
Authors: Abbazov I , Khodjiev M , Salimov A , Egamberdiyev F 
Published: March 2023

Abstract
Uzbekistan is implementing comprehensive measures to produce a wide range of high-quality and inexpensive textile and light industry products based on the production and deep processing of cotton fiber, which is the main textile raw material, to prevent waste and increase its competitiveness. This article, to a certain extent, serves to implement the tasks specified in the Decree of the Cabinet of Ministers dated November 25, 2018 No. 53 “On additional measures to organize the activities of cotton and textile industries and clusters” and other regulatory and legal documents related to this activity. The science of cotton transport by pneumatic transport has a long history, and with an air flow speed of more than 28 m/s, cotton is distributed more evenly over the pipe section. In it, the transportation process is carried out mainly in the suspended state of the material. With a decrease in the air flow velocity from 25.0 m/s, an analysis of the literature on the uneven distribution of material over the pipe section was carried out. It has been practically proven that an increase in the expansion angle in expanding or contracting pipes depends on air resistance, and the expansion or contraction angle depends on the speed of air movement at the point of expansion or contraction of the pipe. Therefore, the optimal value of the angle of expansion or contraction of expanding or contracting pipes was determined.