Light Chestnut Research Articles

Bringing medicinal plants of the native flora of the northern Tien Shan into cultivation

In the current study, it was tried to investigate the medicinal plants of the native flora of the Northern Tien Shan to bring them into domestication. The study was carried out on the territory of a botanical garden located at an altitude of 880 m a.s.l., in the foothill steppe zone of the Zailiysky Alatau ridge, People’s Republic of China on light chestnut loamy soils. In 2018–2019, more than 90 samples of 51 species of medicinal plants of the Northern Tien Shan flora was selected from 17 families for introduction tests. The families Compositae (10 genera, 12 species) and Lamiaceae (12 genera, 13 species) were represented by the largest numbers of genera and species. The family Leguminosae was represented by four species from four genera; the families Polygonaceae and Ranunculaceae, by three species each; the family Rosaceae, by two species; and the remaining 11 families, by one species each. The results suggested that the majority of medicinal plants of the Northern Tien Shan tested can be successfully cultivated in the foothill zone of the Zailiysky Alatau. The results indicated that when propagated by seed, the laboratory germination varied from 2 to 30%, and the mass of seeds was 0.21 g. When sown in spring, the field germination was 8%, and when sown in autumn, 42% from 50 to 70% of seedlings survived until the end of the growing season. The massive flowering was observed in the third year, and the plants vegetated until the end of the growing season.

Effectiveness of biologization predecessors and methods in increasing grain crops productivity and field crop rotations productivity in Nizhneje Povolzhje region

Researches on the study of predecessors and biologization techniques in field crop rotations were carried out in 2018-2020 in the dry steppe zone of the chestnut subzone of light chestnut soils of the Nizhneje Povolzhje region. It is necessary to grow biennial melilot for green manure as a fallow-growing crop in a grain-steam five-field crop rotation in order to increase the organic matter input into the soil. A significant increase in yield was achieved in chickpeas for winter wheat, its straw was plowed into the soil. The highest increase in the spring barley yield was provided during the chickpeas and sorghum cultivation, which straw entered the soil. When growing spring barley on safflower, its straw was plowed into the soil, the yield was also higher than the control variant. The highest grain yield was achieved in the control grain-fallow four-field crop rotation with complete fallow, where the cultivated crops straw was removed from the field and grain-fallow-grass green manure seven-field crop rotation with seed fallow, where straw and melilot were plowed into the soil. Grain-fallow seven-field and grain-fallow-grass-cultivated green manure seven-field crop rotations, where oats and phacelia straw and green manure mass entered the soil, were inferior to the control.

Drip irrigation of onions

From 2017 to 2020, research was conducted in the Volgograd region in order to improve the efficiency of water and mineral nutrition management of onions by justifying the calculated layer of soil moisture and agrotechnical methods of cultivation on light chestnut soils to obtain 110 t/ha of marketable products. The main objectives of the research include the rationale for the formation of the water regime of the soil and drip irrigation regimes depending on the wetted soil, the study of patterns of growth, development and yield formation of onion depending on the studied factors, economic and environmental assessment of drip irrigation technology, the quality of the bulbs, depending on the studied factors. The field experience included the following options: water regime of the soil (factor A), mineral nutrition regime (factor B), promising onion hybrids (factor C).The studies were carried out on onion crops C1 – Migros F1; C2 – Dragon F1 ; C3 - Dammica F1. Against the background of the introduction of N180P80K70, the Migros F1 hybrid provides an average of 94.3 t/ha of onions in 3 years of research, which is 16.6 t/ha more in comparison with the Dragon F1 onion; and 2.2 t/ha more in the Dammica F1 hybrid.

Treatments influence on soil water-physical indicators in Nizhneje Povolzhje dry-steppe zone conditions

The experiment is carried out in the conditions of semi-desert flat agricultural landscapes of light chestnut soils. The object of research is a 4-field crop rotation (factor A), variants of the main tillage (factor B) and crops superimposed on the tillage options with the Don-114 seeder (a seeder for direct sowing). The placement of options (A) is sequential and options (B) are arranged in blocks in three tiers. The main soil tillage was carried out by the following tools: mouldboard tillage to the depth of 25-27 cm by plough PN-4-35; non-mouldboard tillage to the depth of 25-27 cm by the tool OCHO-5-40 with the rack “Rancho”; surface one to the depth of 8-10 cm by the tool BDM-4.2, and 4-field grain-fallow crop It was found that a higher content of nutrients is in fallow preferably at non-mouldboard soil treatment, in some years, which has an optimal moisture supply, and control (mouldboard) one in comparison with lower levels of surface soil treatment in all years of the research. The main comparison in the change in nutrients in fallow fields is observed precisely for different methods of soil cultivation.

Результаты исследований различных приемов создания кормовых угодий в аридном регионе Северного Прикаспия

Abstract. Purpose. The research is aimed at developing methods for creating highly productive and highly nutritious pasture agrophytocenoses, adapted to the extreme conditions of the arid zone of the Northern Caspian region. Methods. The paper provides an assessment of the productivity of perennial one-species (Agropyron) and poly-species (Agropyron, Eutoria, Kochia) agrophytocenoses for a five-year period of their vegetation, depending on the timing (autumn, spring) and sowing methods (ordinary, scattered). Results. These phytocenoses, created in the harsh climatic conditions of the semi-desert on light chestnut soils with a low level of fertility (humus – 0.68 %), starting from the first year, formed the yield 2–7 times higher than the natural pasture. According to the results of the study, it was revealed that a significant role in the creation of arid forage phytocenosis was played by the sowing method and species composition, including the scattered sowing method turned out to be more productive (in monospecific – by 57–70 %, in poly-species – by 63–82 %), the yield of the poly-species composition of the phytocenosis, starting from the second year, increased by 1–2 t/ha for all years of the study in comparison with the monospecific composition both on the row and on the spread method of sowing. Scientific novelty. All created agrophytocenoses for all variants had a fodder value 3–10 times higher than the natural pasture, including the presence of different plant species on the pasture increased the collection of fodder units in comparison with a single-species pasture by 1.5–2 times, and the spread method of sowing also increased the provision of pasture fodder with protein by 0.18–0.2 t/ha. Already by the second year of plant development, it was noted that the presence of shrubs and semi-shrubs on the forage lands creates better conditions than the aftermath of the corn crop for snow retention, and, accordingly, contributes to a greater accumulation of moisture in the soil.

Structural changes of the three-segment desert and steppe complex in Saratov Priuzenie area (based on Earth remote sensing data and ground-based observations)

Northern semi-desert with zapadinny microrelief area is located in the south of Saratov Oblast. Microrelief contributes to moisture redistribution and its accumulation in micro-depressions (swales, or Russian name “zapadines”) under conditions of extremely low precipitation (312 mm per year). This allows to form a specific surface, where micro-slopes with light chestnut soils (44.1%), micro-hills with solonetzs (37.5%) and micro-depressions with meadow chestnut soils (18.4%) coexist. Studies of the microcomplex semi-desert were carried out in Aleksandrovo-Gaysky district at the key site (100 × 100 m) in 2010 and 2020. The morphological structure of the landscape is preserved, but the quality of soil and vegetation cover has changed significantly. The projective cover of the herbaceous layer has decreased by 20-30%, the species diversity has significantly decreased as well. Herbaceous vegetation has almost disappeared in the micro-depressions, and the height of the spirea shrub has decreased from 1-1.4 m (2010) to 0.5-0.7 m (2020). Semi-desert landscapes are used for grazing cattle, sheep, goats and horses. The density of pasture trails on the key site was 0.11 m/square m in 2010, and 0.17 m/square m in 2020. The landscape area disturbed by livestock trails increased from 3% (2010) to 4.7% (2020) of the site area. The upper soil layer on trails is in a loose state to a depth of 4-6 cm. It is necessary to reduce pasture load, limit grazing time and take measures to organize the Priuzen semi-desert reserve to preserve microcomplex semi-desert landscapes.

Phosphoric regime of light chestnut soil and sugar beet yield with long-term use of phosphorous fertilizers

This study presents the results of research on the effect of long-term use of phosphorus fertilizers on permanent sugar beet crops for more than 50 years and on the transformation of phosphate forms on light chestnut soil and its yield. Our work aims to establish the main factors of quantitative and qualitative changes in various phosphates in light chestnut soil. Despite the large amount of practical material, the influence duration of phosphorus fertilizer application has not been sufficiently studied on the irrigated soils of Kazakhstan. It should be noted that the current study was carried out in long-term stationary experimental sites for the production of sugar beet with permanent sowing. The introduction of phosphate fertilizers primarily on the permanent crops of sugar beets in the same norms contributes to a more significant increase in gross phosphorus reserves. The soil content of gross phosphorus for 58 years on the control and nitrogen-potassium variants show practically no changes. Furthermore, when phosphorus fertilizers are applied on the variant with the annual application of a single norm of phosphorus and its amount for 58 years (4400 kg∙ha–1 of application doses) its content increased by 2660 mg∙kg–1, and with the introduction of its one and a half norms (6600 kg of application doses) by 2860 mg∙kg–1 of soil.

Features of the Soil Cover of the Semi-Desert Ecotone in the South of the Volga Upland

The semi-desert ecotone of the south of the Volga Upland is part of the zonal macroecotone bordering the Eastern European steppes from the southeast. Under strained hydrothermal conditions, the microrelief plays a decisive role in the redistribution of atmospheric moisture. This article contains materials from 10-year studies of the soil and landscape cover of the contact zone of the south of the Volga Upland and the northern end of Ergeni. The so-called three-membered complex described 100 years ago by N.A. Dimo and B.A. Keller is not traced in the soil cover. The methodology of landscape-catenary sections was used by laying soil-geomorphological profiles and drilling wells with subsequent sampling of soils at 5 test sites. The soil cover of the watersheds of the sites is represented by complexes of light chestnut low-humic weakly alkalinized medium- and heavy-loam soils. A smaller area is occupied by meadow-chestnut soils of cavities and solonets. The structure of the soil cover of the slopes includes combinations and variations that transform into mesocatenes. In the mesocatene of balkas, zonal light chestnut turn into metamorphosed meadow-chestnut soils or drift dark-colored soils of the bottom of balkas. The semi-desert ecotone is almost completely located within the boundaries of the spread of light chestnut soils in Volgograd region. The structure of the soil cover of the ecotone is dominated by a twofold complex, where zonal light chestnut soils in combination with meadow-chestnut soils of cavities and solonets.

Efficiency of use of microelements in cultivation of sweet pepper during irrigation in the subzone of light chestnut soils of the Volgograd region

The results of studies of scientifically grounded use of microelements in sweet pepper crops, as an important factor in increasing the yield of vegetable crops and improving the quality of products, are presented. The purpose of our research was to substantiate the influence of the use of trace elements in the technology of sweet pepper cultivation on the growth and development of plants, the productivity and quality of the products of this culture. The experimental part of the work was carried out in 2014-2019 in the subzone of light chestnut soils of the Volgograd region. Experiments on the study of trace elements were carried out by pre-sowing seed treatment and foliar feeding of plants. Chemically pure compounds of manganese sulfate, zinc sulfate, copper sulfate, ammonium molybdate, boric acid were used as microelements. The use of trace elements in the dry-steppe zone of the Lower Volga region is an important agricultural technique that helps to accelerate growth, development, increase productivity and improve the quality of pepper fruits. It is recommended to carry out pre-sowing treatment of seeds with solutions of boric acid (0.29 g / 1 l of water), copper sulfate (0.20 g / 1 l of water) and manganese sulfate (0.16 g / 1 l of water) (the ratio of the weight of seeds to the solution 1: 2) as a way to increase seed vitality, speed up yield and improve seedling quality. In order to increase the yield and improve the quality during the budding period of peppers, it is necessary to carry out foliar dressing, first of all, with solutions of boric acid (0.29 g / 1 l of water), ammonium molybdenum (0.10 g / 1 l of water), water consumption 1 l / 10 m2. Due to its high efficiency, simplicity and availability, pre-sowing seed treatment and foliar feeding of plants with microelements will find wide application in vegetable growing.

Seed Productivity of Coenopopulations of Tulipa Gesneriana L. (Liliaceae) on the Ergeninskaya Upland (Within the Boundaries of the Republic of Kalmykia)

This article presents results on the seed productivity of populations of Tulipa gesneriana L. in the Ergeninskaya Upland (within the boundaries of the Republic of Kalmykia). This species is listed in the Red Data Books of several regions of Russia, including Kalmykia. The research objects were 4 populations of T. gesneriana growing on the Ergeninskaya Upland, which extends across the Republic territory from north to southwest on light chestnut soils of solonetzicity. The potential seed productivity of these T. gesneriana plants was 161.8-181.5 pcs. seeds per plant; the actual seed productivity was 161.8-181.5 pcs. seeds per plant; and the formation of seeds was 34.4-75.6%. All indicators of seed productivity showed significant interpopulation differences when moving from the northern part of the Upland to its southern part. A potential reserve of mature seeds per 1 meter2 , formed during the growing season, in the coenopopulations of T. gesneriana was 253.2 - 3212.8 pcs. in 2018 and 368.0 - 1121.2 pcs. in 2017 on the Ergeninskaya Upland.
 Keywords: Tulipa gesneriana, coenopopulation, seed productivity, seed reserve

Protection Elements for Safflower Oilseeds

Agricultural techniques for growing safflower, adaptive to the natural and climatic zone, is an important and necessary measure for increasing yields and improving the quality of oil seeds of safflower (Carthamus tinctorius L). Biological and morph physiological characteristics of the culture and its variety determine the technological methods for its cultivation and production of oil seeds. Safflower is a crop that is of great value and is able to replace sunflower. The agricultural technology of its cultivation in the Lower Volga region is constantly being studied; however, safflower plant protection methods are not well understood. Experiments to study the effectiveness of safflower protection methods were carried out in 2017-2019 on the territory of the experimental field of the Federal Research Center for Agro-Ecology of the Russian Academy of Sciences, where light chestnut soils with a humus content of 1.2-2.0% and pH = 7.8 predominate. Ways of protecting safflower were considered and the effectiveness of seed dressing with a mixture of Vincit 1.5 l/t + Fertigrain Start 0.5 l/t was revealed. This option was the most profitable (16.5%), with a yield of 1.2 t/ha. The control option using a mixture of Vincit + Azotovit + Phosphatovit 1.5 l/t + 2.2 l/t + 2.2 l produced a yield of 0.8 t/ha and was not profitable.
 Keywords: agricultural technology, safflower, productivity, oil content of seeds, plant protection, root rot, pesticides, agrochemicals

Influence of pesticides on the biological activity of light chestnut soils in South-East Kazakhstan

The paper discusses the impact of pesticides on the biological activity of soils, as well as an environmental assessment of the state of light chestnut soils by the Kazakh Research Institute of Agriculture and Crop Production with the aim to es-tablish diagnostic indicators that reduce biological activity. The study covers physical, chemical and biological properties of soils under crops of winter wheat in the light chestnut soil in the South-East of the Republic of Kazakhstan. The content of pesticides in soil samples was determined using the gas chromatography mass-spectrometric method. The paper shows results of the chromatographic analysis of soil samples regarding the content of pesticides. The study of changes of light chestnut soil biological activity was conducted to determine their relative resistance to pesticide contamination. Data ob-tained revealed the degree of light chestnut soil resistance to pesticide contamination. The study also identified species of soil invertebrates, as well as soil enzymes that should be used as bioindicators for the monitoring of the contamination with pesticides. Results obtained expand knowledge about changes in the biological activity of light chestnut soils due to pesti-cide contamination in the ecosystems of South-East Kazakhstan. In contrast to abundance indicators, the results suggest that the species composition of soil organisms can be used as a criterion for a qualitative assessment of the soil exposure to pesticides.

Effect of fertilizer application on winter wheat productivity under precision agriculture in Kazakhstan

Abstract. Baimuratov, A, Bastaubayeva S, Arslan M, Yeraliyeva Z. 2021. Effect of fertilizer application on winter wheat productivity under precision agriculture in Kazakhstan. Biodiversitas 22: 1558-1563. The effect of mineral fertilization of light chestnut soils of Almalybak, Kazakhstan on the three winter wheat varieties grain yields and NDVI was carried out in 2017/18, 2018/2019 as well as 2019/2020 growing seasons using precision agriculture technologies. The experiments were set up in an incomplete factorial design with rates of NPK N90P60K45, N120P90K60, and N150P120K90. Agrochemical cartograms were ordered for the substance of effectively hydrolyzable nitrogen, extractable phosphorus, and exchangeable potassium. The total variation of NDVI was from 0.62 in the minimum (Bezostaya 100 variety, 2017/18) to 0.88 in the maximum (Aliya variety, 2019/20) in the flowering phase of wheat plants. The highest index of NDVI was observed in the N150P120K90 in the three winter wheat varieties for the three seasons. Studies directed in multivariate analyses built up the connection between fertilizer application, soil fruitfulness, and grain yield. As per the genuine heterogeneity of the fields, standards were determined and differential use of the fundamental phosphorus fertilizer was completed. The yield for the winter wheat varieties varied between 5.6-5.9 t/ha for Aliya variety, 6.5-7.0 t/ha for Grom, and 6.2- 6.7 t/ha for Bezostaya 100, which presents that P120 doses were more suitable in experimental plots for winter wheat varieties. The grain yield on mineral fertilization of NPK for the studied varieties varied from 4.2 to 7.6 t/ha for Aliya variety, from 4.0 to 6.8 t/ha for the Bezostaya 100, and from 4.5 to 7.9 t/ha for Grom. The highest grain yield was observed in the N150P120K90 for three winter wheat varieties in all three seasons.

Adaptation of soils of the Ciscaucasia to processing systems

The intense technological and natural anthropogenic load on the soils of the Stavropol Territory, leading to a violation of its ecological and production functions and a decrease in fertility, requires a differentiated approach when introducing a particular soil cultivation system for a specific type or subtype of soil. It is proposed to develop a generalized indicator D for assessing the implementation of various systems of basic tillage for different types of soils based on criterion factors: humus content (%), soil density (d, g/cm3), soil resistivity (T, kg/cm2) and soil ped content >10 mm (C, %). As a result of calculations of the indicator Dfact for a specific soil and comparing its values with the range of Dtest it was found that for ordinary chernozem and solonetzic chernozem with Dfact equal to 0.889 and 0.932, moldboard plowing is acceptable for certain crops in the crop rotation, dark chestnut and chestnut soils with Dfact equal to 0.828 and 0.778, respectively, it is preferable to cultivate without moldboard with a combination of different methods and depth of soil cultivation, on light chestnut soils (Dfact=0.749), minimization with shallow mulching is recommended.

Effect of meliorative doses of phosphogypsum on the agrochemical properties of the soil and the yield of sunflower

The influence of meliorative doses of phosphogypsum application on agrochemical soil properties and sunflower yield was studied. The results of experiments carried out in the Volga region on light chestnut soils are presented. It was revealed that the content of heavy metals for all variants of the experiment did not exceed the approximate permissible concentration; application of phosphogypsum shifted the reaction of the soil environment towards neutral. The use of this agricultural technique increased the content of nutrients in the soil and labile organic matter, most of all, this was noted in the variant with a phosphogypsum dose of 8 t/ha. It was concluded that the combined application of mineral fertilizers and phosphogypsum at a dose of 4 t/ha leads to a significant increase in yield by 0.65 t/ha. The use of phosphogypsum as an ameliorant solves the environmental problem of utilizing wastes after the production of mineral fertilizers accumulated in the Russian Federation in the amount of about 50 million tons. The studies carried out have confirmed the soil-improving and fertilizing properties of phosphogypsum, as well as its environmental safety.

Agrogenetic and chemical properties of soils in Lower Volga region in conditions of vegetable rotations

The paper presents the analysis of the study of the chemical composition of light chestnut soils of Astrakhan region and chestnut soils of Volgograd region in the conditions of vegetable rotation. In the field condition, soil samples were taken at different depths on virgin soil, at 0.22 … 0.25 m and 0.00 … 0.45 m on arable land. In laboratory conditions, the granulometric analysis of soils, determination of hygroscopic moisture, determination of the content of particles of different diameters, the content of macroelements and microelements in the soils of Lower Volga region were carried out. The results of the analysis show the following tendencies: hygroscopic moisture in arable lands significantly increased in comparison with virgin lands. Ehe hygro-scopic moisture on virgin soil in horizon A was 3.65%, which was 1.87 times higher than its value on the light chestnut soils of the Caspian region. On arable land, the value of hygroscopic moisture was lower than its reserves on light chestnut soils and 1.5 times lower than on virgin soil. The amount of particles less than 0.01 mm on virgin land was significantly higher than on arable land, namely, A horizon of virgin land was 55.06%, Aarl horizon of arable land was 0.22-0.25 m - 38.20%.

Efficiency of growing spring wheat with the use of biological agents in light-chestnut soils

This article presents the results of a study of spring wheat with the application of biological products. The positive effect of drugs on growth processes and productivity has been established. The conditions of spring wheat cultivation with the use of biologics and their influence on the yield of spring wheat were studied. The purpose of our research was to study the effect of biological preparations on the efficiency of growing spring wheat in light chestnut soils. Results of the presented studies on the impact on yield using growth stimulants and strains: flavobacterin 30, mizorin 7, strain 5S-2, strain 8 on spring wheat varieties: Esther, Lada, Lubava, in the Astrakhan region for 2016-2018. The results showed that when seeds were treated with growth promoters and strains, almost all variants increased their yield.

СОДЕРЖАНИЕ МИКРОЭЛЕМЕНТОВ В КРОВИ КРУПНОГО РОГАТОГО СКОТА ПРИАЛИМЕНТАРНОЙ АНЕМИИ, ГИПОКУПРОЗЕ И В ПРОБАХ ПОЧВ ТУВЭ АЙМАКА МОНГОЛИИ И КЯХТИНСКОГО РАЙОНА РЕСПУБЛИКИ БУРЯТИЯ

This paper discusses the results of laboratory tests of biochemical indices of blood serum (copper, iron, protein, albumin, urea, glucose, and alkaline reserve) of cattle of Mongolian and Kalmyk breeds with alimentary anemia and hypocuprosis; the paper also discusses the findings of the comparative study of trace element composition (copper, zinc, cobalt, nickel, molybdenum, strontium, iron, and man-ganese) of the soils of the Töv Aimag of Mongolia and the Kyakhtinsky District of the Republic of Buryatia. The disor-ders of mineral metabolism in animals of Mongolian and Kalmyk breeds with clinical signs of alimentary anemia and hypocuprosis was accompanied by the signs of hypocu-premia and hyposideremia, i.e., insufficient content of cop-per and iron in the blood. When studying the causes of trace element deficiency in cattle, the natural geographic features of the deficiency concern areas were considered. It has been found that the endemic foci are common in light-chestnut soils and thin chestnut soils around lakes and stock watering sites in Mongolia and the Kyakhtinsky District of the Republic of Buryatia. As compared to medi-um-thick chestnut soil, light chestnut soil of the Töv Aimag of Mongolia is poor in copper by 21.9%; cobalt -by 32.4%; strontium -by 11.7%; iron –by 19.7%; manganese -by 9.9%; richer in zinc by 32.9%; molybdenum -by 7.7%. The content level differences in the medium-thick chestnut soil as compared to light chestnut soil of the Kyakhtinsky Dis-trict of the Republic of Buryatia are as following: copper -more by 25.0%; cobalt -by 40.3%; nickel -by 11.8%; mo-lybdenum -by 38.7%; strontium -by 16.3%; iron -by 53.8%.

Water supply intensity during drip irrigation of vegetable crops

The paper presents the materials of field research on the study of the regularities of the development of moisture outlines on light soils during drip irrigation of vegetable crops. The correlation is found between the depth of the moistened layer and the area of the moistening outlines on the pre-irrigation threshold of the moisture content of the active soil layer, irrigation standards and the flow rate of drippers, which gives an opportunity to decline the unproductive water consumption for filtration. It is found that in light loamy and sandy loam light chestnut soils, for guaranteed rule of the moisture regime, on onion crops, it is essential to maintain the pre-irrigation threshold of 80% HB with the irrigation rate of 200 m3 / ha with the flow rate of drip water outlets of 2.8 l / h, and the depth of irrigation of 120 m3/ha with the flow rate of discharge outlets of 1.7 l/h, correspondingly. In irrigation of tomatoes grown on light-loamy light-chestnut soils, it is appropriate to apply the irrigation rate of 180 m3 / ha, which provides the level of pre-irrigation humidity in the layer of 0.6 m not lower than 80% HB, the formation of the required characteristics of the moisture contour (depth of 0.62 m and diameter of 0.37 m), as well as an enhance in the efficiency of irrigation water use by 11.1%. The results can be applied in the design of drip irrigation systems for vegetable crops.

Monitoring the number of trips on open-ground tomatoes

The agroclimatic resources of the Astrakhan region are quite large and represent huge opportunities in the production of heat-loving crops such as vegetables and melons. The region has accumulated a great scientific and production experience in the cultivation of tomatoes as the main vegetable crop rotation crop.To date, the first task for farmers of the region is to develop new modern agrotechnological techniques to eliminate the spread of thrips on open-ground tomato plants. The object of research was a hybrid of tomato of the domestic selection of the agricultural company Sedek Azhur F1. Materials and methods.For the first time, for the conditions of light chestnut soils on the land use territory of FSBNU “Caspian Agrarian Scientific Federal Scientific Center of the Russian Academy of Sciences” during 20182020. the influence of various insecticides in the fight against tripasmi was studied.As a result of the analysis, the presented scientific article presents the main results for the study of new modern insecticides in the fight against trypses on open-ground tomato Azhur F1. According to the results of three years of study, the optimal option with the use of the drug Confidor Extra was revealed, which contributes to a significant decrease in the number of phytophages.The use of these preparations had no phytotoxic effect on open-ground tomato plants. In the version using the insecticide Confidor Extra, there was more purely commercial fruits and a significant increase in the crop relative to control without treatments, as well as a variant where the Fufanon-Nova preparation was used. The increase relative to control in the high-yield version was + 40.8 t/ha or 43.5%.