Productive Bushiness Research Articles

Highly Productive Soft Spring Wheat <i>Kinelskaya Udacha</i> Variety for Forest-Steppe Conditions of the Middle Volga and Ural Regions

The results of breeding work on the creation of a new variety of soft spring wheat Kinelskaya Udacha are presented. The research was conducted in 2019–2023 in the forest-steppe zone of the Samara region. The weather conditions of the vegetation were diverse, but in general they were quite arid: the hydrothermal moisture coefficient in 2019 was 0.48, 2020 – 0.52, 2021 – 0.39, 2022 – 0.62, 2023 – 0.41, the average annual norm was 0.73. The selection work was carried out according to the Methodology of the state variety testing. The comparison of the new variety was carried out with the Tulaykovskaya Nadezhda standard and the zoned Kinelskaya Yubileynaya variety. The Kinelskaya Udacha variety showed a consistently high grain yield over the years of research of 2.24–4.34 t/ha (on average 3.19 t/ha), the average increase over the Tulaykovskaya Nadezhda standard was 0.37 t/ha (13.1%), over the Kinelskaya Yubileynaya variety – 0.12 t/ha (3.9%). The adaptability of the new variety is 106.1%, which is 12.7% higher than the standard and the Kinelskaya Yubileynaya variety by 3.9%. Productive bushiness is high, on average 2.0 pcs. (the standard has 1.6 pcs.). It was characterized by consistently high flour strength of 353...503 e.a. (on average 412 e.a.), high grain size of 811–848 g/l (on average 823 g/l), and high gluten content in grain of 26.8–33.6% (on average 28.5%) of the second quality group (in an average of 87 units. IDK). The protein content in the grain is 13.4–15.9% (average 14.2%). The overall baking grade is high – 4.4 points. It has complex resistance to pathogens and high drought resistance (5 points), resistant to lodging (4.3 points), grain shedding (5 points) and its germination on the root (5 points). It is designed for the production of high-quality food grains. The variety has been undergoing State testing in the Middle Volga and Ural regions of the Russian Federation since 2024.

The biological efficiency of multifunctional complexes based on <i>Bacillus subtilis</i> strains and chitosan salicylate in wheat cultivation

The influence of multifunctional complexes capable of causing a growth-stimulating effect on plants and inhibiting the development of a wide range of diseases on the Leningradka 6 spring soft wheat cultivar (k-64900) was investigated. In the research, it was found that the application of multifunctional complexes based on the Bacillus subtilis bacterial strains and 0.1% chitosan salicylate in wheat cultivation led to a significant decrease in the incidence of plant diseases: yellow and brown rust, powdery mildew, root rot and caused an increase in morphometric productivity indicators. This tendency was associated with a significant influence of multifunctional complexes on the increase in the number of primary and nodal roots; the length of nodal roots; productive bushiness; the number of spikelets per spike; the grains weight per spike. However, the effectiveness of protective and stimulating wheat treatments depended on the complex of natural and climatic factors of wheat vegetation seasons.

The role of moisture in the development of spring wheat

In the conditions of the North Kazakhstan region, the moisture supply of the growing season of spring soft wheat is characterized by an uneven distribution of precipitation, which affects the yield of grain crops.This process can be observed using the G.T. Selyaninov hydrothermal humidification coefficient (GTC). A scientific study during 2022-2023 was conducted in order to influence moisture availability on the grain yield of spring soft wheat in the North Kazakhstan region. The methodology consists in calculating the hydrothermal coefficient in the interphase periods of spring wheat for calendar years: 2022 and 2023. The calculation of the elements of the crop structure and grain yield was also carried out.In accordance with the moisture availability of the growing season of spring wheat, the main elements of the crop structure: productive bushiness, ear water content, pcs; weight of 1000 grains, g showed themselves stronger in 2023, respectively: 1.1; 21; 33, than in 2022.Moisture availability of the period of release into the tube - grain ripeness in 2022 took place in satisfactory conditions for spring wheat, which affected its grain yield of - 15 c/ha. In 2023, the stages of wheat organogenesis before the earing period passed favorably, despite the subsequent poorly satisfactory wet conditions before grain maturation, the harvested plants showed good productivity potential - 17c/ha, which exceeded the grain yield of 2022.The use of the hydrothermal coefficient makes it possible to apply agrotechnical techniques to increase the yield of spring wheat grain in unstable periods of moisture availability.

Principles and methods of creating artificial vegetation cover on disturbed industrial lands

Biological reclamation is used to restore technogenically disturbed landscapes. Plant characteristics are important when choosing a plant assortment for the restoration of degraded areas. The purpose of this work was to study the principles and methods of creating artificial vegetation cover on disturbed industrial lands. Before carrying out biological reclamation, the surface was finished and a layer of potentially fertile soil layers with a capacity of at least 1 m and a fertile soil layer with a capacity of at least 0,5 m was applied. Before starting work, the quality of the seed material and its value were determined. Soil improvers (sapropel, latex, microorganisms, cellulose mulch) and biologics (TOP organic, complex of rhizospheric bacteria, hydrogel) were used for planting herbaceous and woody shrubby plants. After carrying out the hydraulic sowing activities, field germination of the seed was monitored every 10 days. Aerial photography was performed with an RGB camera using unmanned aerial vehicles of the DJI Phantom 4 Pro+ model with an on-board Global Navigation Satellite System receiver installed. It was found that the use of a biological product based on a complex of rhizospheric bacteria activated the processes of seed germination in experimental plots. Such activation made it possible to obtain productive bushiness of perennial crops in the early stages, due to which the area of vegetation covering the experimental site increased. The addition of hydrogel and TOP organic with a weight of 2 kg also had a positive effect on seed germination and plant survival. A comparative analysis of all experimental parameters revealed that the most effective projective coating of the site was obtained with the combined use of hydrogel and the preparation TOR-organic. At the same time, a further increase in the mass fraction of hydrogel in the substrate does not significantly affect the result of the creation of artificial vegetation cover on disturbed industrial lands.

New sources of agronomic traits of spring barley for the conditions of the southern zone of the Central region of the Russian Federation

The purpose of the research is to study a new assortment of spring barley in the conditions of the Ryazan region (southern zone of the Central region of the Russian Federation) and identify sources of agronomic traits for their further use in hybridization. The observation, study and comparison of 11 new varieties of spring barley (standard – Nadezhny) was carried out in 2020–2022 on a natural infectious background (the soil was dark gray forest heavy loamy). It was found that the highest average yield over the years of the research was in the varieties Znatnyy (Russia) – 6.38 t/ha, Ellinor (Germany) – 6.02 t/ha and Kufal (Belarus) – 5.98 t/ha. There were identified low–growing forms - the German varieties KWS Vermont and Ellinor, the height of which was in the range of 63–67 cm and varied little over the years of the research (CV, % = 3.9...6.0). The lowest protein content in the grain was in the German varieties Ellinor (12.31 %), KWS Harris (12.43 %) and the French variety Rapid (12.69 %). In order to improve the quality of forage, a group of high-protein barley was identified: Pamyati Chepeleva (15.31 %) (Russia), Kufal (14.61 %), Znatnyy (14.10 %). According to the length of the ear, the varieties Bente (8.2 cm) (Germany) and Znatnyy (8.0 cm) stood out. It has been established that the varieties of Pamyati Chepeleva and Laureate (Switzerland) have the highest productive bushiness – 4.0 and 4.4. The largest number of grains in the ear was observed in the Znatnyy variety – 23.4 pcs. All the studied source material had high resistance to phytopathogens and lodging. The new varieties identified in the research process are a valuable source material for the development of new highly competitive varieties of spring barley for the conditions of the Central region of Russia.

Economic and biological characteristics of soft winter wheat variety Krasnoobskaya ozimay

One of the main tasks of modern breeding is to create the varieties that are resistant to negative environmental factors giving consistently high yields in a changing climate. Since 2021, the variety of soft winter wheat Krasnobskaya оzimaya, created by recombination breeding, has been included in the State Register of Breeding Achievements. Its pedigree includes, along with wheat varieties, triticum-agropyrum hybrid and triticale. This variety was evaluated for its economically valuable traits and properties. The studies were carried out in 2015–2022 in the Novosibirsk region. Novosibirskaya 40 was the standard, Novosibirskaya 3 was the control. Krasnobskaya оzimaya variety is recommended for cultivation in the forest-steppe zone of the West Siberian region. It is medium maturing, has rather high winter hardiness (60.0%) and resistance to lodging (4.1 to 4.7 points) with plant height up to 101 cm. The weight of 1000 grains averages 37.9 g. The variety has a high coefficient of productive tillering (5.3 pcs.). Over the years of the study, the average yield of the variety was 5.03 t/ha. On average, according to the results of the tests in the state variety test plots of the Novosibirsk region the yield amounted to 4.34 t/ha, the maximum yield was observed at the Maslyaninsky variety test plot – 4.9 t/ha, which is 1.14 t/ha higher than the standard. According to the results of the ecological test, the yield exceeded the varieties Novosibirskaya 40 and Novosibirskaya 3 by 0.74 and 0.41 t/ha, respectively, winter hardiness was at the level of the standards. High and stable yield of this variety is formed due to a number of economically valuable features: productive bushiness, weight of 1000 grains, resistance to lodging, winter hardiness. According to the results of the study, it was determined that the optimal sowing date of the Krasnobskaya оzimaya variety is September 1 with a shift of 1–3 days in both directions.

Действие биопрепаратов на ростовые параметры Sorghum sudanense (Рiper) Stapf

Abstract. The purpose of the study was to study the effectiveness of microbiological preparations on the growth characteristics of Sudan sorghum under the conditions of the Vologda region on the background with and without fertilizers. Methodology and methods. Research work was first carried out in the Vologda region in the experimental field of FSBSI “Vologda Research Center of the Russian Academy of Sciences” in 2022. Biopreparations based on living cells of microorganisms were used, the basis of the drug “Naturost-Aktiv” consists of cell culture Lactobacillus buchneri, “Naturost-M” – Bacillus megaterium. The object of the study was Sudanese sorghum variety Zemlyachka. Small-scale field experiment included the following variants: control (1 var.), control + fertilizer (2 var.), biopreparation (3 var.), biopreparation 1 + fertilizer (4 var.), biopreparation 2 + fertilizer (5 var.). Repetition of the experiment – 3 times, the area of recording plot 5 m2. Indicators are presented by 4 counts per season. Results. The total bushiness in the variant with the “Naturost-Aktiv” increases by 35.3 %, an increase of 29.4 % to the control is noted in the variant “Naturost-Aktiv” + fertilizer. Productive bushiness was fixed in each variant, the maximum increase to the control was 45.5 % in the variant control + fertilizer. The greatest gain to the control of 42.5 % in the average area of the leaf surface was determined in the variant with the use of the drug “Naturost-M” and fertilization. Scientific novelty. For the first time a study on Sudan sorghum variety Zemlyachka in the conditions of the Vologda region using the biopreparation “Naturost-Aktiv” based on the cell culture Lactobacillus buchneri and “Naturost-M” – Bacillus megaterium on the background with and without fertilizers, which then can be recommended to increase the adaptation of plants and increase productivity, in turn Sudan sorghum can be recommended as a basic or auxiliary element of crop rotation.

Economic and biological characteristic of the new winter triticale variety Georg

The article presents the main methods and study of a new variety of winter triticale Georg. Selection work was carried out at the Federal State Budgetary Scientific Organization “Federal Center of Agriculture Research of the South-East Region”. The variety was bred by the method of intervarietal hybridization within the Triticale genus, followed by a single selection from the hybrid F2Aquarius/ADP-2//Modus. The characteristic of the variety according to the most important economically valuable traits are given in comparison with the varieties Zubr and Valentin 90 admitted for cultivation in the Nizhnevolzhsky region. The direction of grain use is grain fodder. Variety - ferrugineum. According to the competitive variety testing the grain yield of the new variety was 6.2 t/ha, which significantly exceeds the Zubr variety by 1,9 t/ha and the Valentin 90 variety by 1.5 t/ha. In terms of "mass of 1000 grains", the Georg variety is inferior to both standards. The variety is distinguished by a higher productive bushiness in comparison with the standards - 465 pcs/m2, in the varieties Zubr and Valentin 90 - 344 and 307 pcs/m2, respectively. The variety is resistant to lodging. The height of the straw of the plants of the variety is 110.7 cm and does not differ from that of the Valentin 90 variety, but is lower in comparison with the Zubr variety by an average of 21.3 cm. The full-scale weight of the Georg grain is 732g/l. This indicator is lower than that of the Zubr variety by 9g/l and higher than that of the Valentin 90 variety by 31.3g/l. The grain germination index of the new variety and standards did not differ and indicated their susceptibility to pre-harvest grain germination. There were no significant differences in protein content between varieties. The volume of SDS-sedimentation in cv. Georg is lower than in cv. Valentin 90 by 6.7 ml and does not differ statistically significantly from cv. Zubr. According to the indicator “bread volume, cm3/100 g of flour”, the new variety and standards did not differ. The variety is approved for cultivation in the 7th (Middle Volga) region of the state register of the Russian Federation. The main advantages of the Georg variety are a high potential grain yield and resistance to lodging, due to the reduced plant height.

Correlation of structural indicators of winter wheat with grain productivity influenced by contrasting meteorological conditions in the central region

Field research was carried out in the nursery of competitive variety testing in 2018-2022 on the selection fields of ISA-a branch of the FSBI FNAC VIM of the Ryazan region. The objects of the study were the hydrothermal conditions of the region and the structural elements of the productivity of the best varieties of their own selection: Viola, Felicia, Galatea, Anfisa, Boyarka, Ivita, Vimitsa (GSI), Adarka (GSI) and 3 promising lines with consistently high yields over the years of research. The revealed interrelations between yield and the elements of productivity that determine it in the continuously changing external conditions of the Central region of the Non-Chernozem zone of the Russian Federation allowed us to establish that such indicators as "number of plants before harvesting" - r=+0.887, "mass of 1000 grains" - r=+0.806, "number of productive stems" - r=+0.613 and "plant height" - r=+0.494 have the main influence on the formation of productivity of winter wheat varieties/lines selected for analysis. The main factor limiting the productivity of grain crops in the area of our research is the lack of atmospheric moisture. The amount of precipitation and the SCC of the growing season significantly affect the "height of plants" (r=+0.761...+0.863), "number of productive stems" (r=+0.556...+0.687), "ear length" (r=+0.598...+0.684), "coefficient of productive bushiness" (r=+0.592...+0.723), "the number of grains in the ear" (r=+0.304...+0.484), "the mass of grain from the ear" (r=+0.301...+0.506). The sum of effective temperatures had a negative relationship (r≥-0,500) with almost all elements of productivity.

OPTIMIZATION OF WINTER WHEAT NUTRITION WITH ZERO TILLAGE TECHNOLOGY IN THE RAINFED ZONES OF SOUTHERN KAZAKHSTAN

The promising research showcased the results of herbicides’ uses, considering the quantitative composition of weeds with zero tillage technology of winter wheat cultivation. It revealed that when treating wheat seeds with the growth stimulator Vimpel (0.5 l/t) and micro-fertilization with Oracle (1.0 l/t) simultaneously etching with the fungicide Bunker (0.4 l/t), as well as, early spring treatment of crops in the tillering phase of winter wheat with the same stimulator (Vimpel, 0.5 l/ha) and micro-fertilization (Oracle multicomplex, 2.0 l/ha) simultaneous with the herbicide “Ballerina” (0.5 l/ha) application, the number of preserved plants before harvesting was 286.1 pcs./m2, reaching a height of 88.9 cm, with a productive bushiness of 1.15 pcs., grains per spike (22.2), 1000-grain weight (34.8 g), and collected dry grains at a standard humidity (22.1 c/ha). It was also evident that the competitive productivity of winter wheat also emerged when treating wheat seeds with biological fertilizer Biobars–M (1.0 l/t), the crop at the tillering stage with Biobars–M (0.5 l/ha), and the earring phase (0.7 l/ha). Similarly, using growth stimulants Vimpel and micronutrient Oracle multicomplex enhanced the grain yield with reduced cost of production (USD 61.3–66.0/kg) compared with the control version (USD 78.6 /kg). On one hectare of winter wheat crop, the net income ranged from USD 289.55 to 443.56.

Combined Triazole Disinfectants and Their Influence on the Growth and Development of Spring Wheat Seedlings

Seed treatment with fungicides is a crucial link in the plant protection system, and systemic drugs give the best effect. Therefore, it is very important to develop scientific foundations for the preparation of complex preparations with a low rate of consumption of the active substance and the inclusion of plant growth regulators that enhance growth processes and the yield of the main crop. In recent years, the directions of modification of known and practiced fungicides by various methods, including methods of mechanochemistry, have been promising. The problem of creating both new substances and their effective formulations remains urgent. Taking into account the prospects and high efficiency of triazole fungicides in the system of complex plant protection, the creation of multicomponent seed protectants of grain crops is proposed. The purpose of this study was to develop preparations based on tebuconazole (TBC) and propiconazole (PPC) in the form of solid dispersions (SD) and to study their biological activity on spring wheat plants in the conditions of the Trans-Urals. At the same time, the retardant effect of these triazoles was also studied with the help of the domestic growth regulator Floroxan. The use of new preparations on spring wheat made it possible to reduce the damage to the culture by root rot by 85–87%, productive bushiness increased by 6–11% compared to the control without treatment. A reliable increase in crop yield of 2.2 c/ha or 14% was obtained using preparation 2 (TD of the composition TBC : PPC : AG : silica = 1 : 1 : 7 : 1 + Phloroxane when the polysaccharide (AG) and the auxiliary substance of silica are included in the composition). The inclusion of the growth regulator Floroxan in the composition of the mordant mixture reduced the antioxidant effect of tebuconazole and stimulated the growth and development of wheat seedlings. It was proved that such a biological effect was achieved in conditions of drought of varying intensity during the growing season of 2021–2022.

Productivity of soft and hard spring wheat varieties under the conditions of Primorsky Krai

Relevance. Currently, the most important tasks of breeding are the creation and introduction into production of new high—yielding varieties, resistant to stressful environmental conditions and with high grain quality, adapted to the conditions of the monsoon climate.The purpose of the study is to study varieties of spring soft and durum wheat of various origins according to the main economically valuable characteristics in the conditions of the Primorsky Territory.Methods. The research was conducted at FSBSI «FSC of Agricultural Biotechnology of the Far East named after A.K. Chaiki» in 2020–2022. Sixteen spring wheat varieties of various breeding origin served as the research object — six soft spring wheat varieties and ten hard spring wheat varieties. The weather conditions during the growing season of wheat differed over the years of the research (2020–2022). This allowed an objective evaluation of the breeding material for adaptability and resistance to stress factors.Results. For breeding and production, wheat varieties with high yields (more than 4.0 t/ha) have been identified: spring soft — Voronezh 18, Rima, Primorskaya 50, spring hard — Don Elegia. As a result of the correlation analysis, high positive associations were revealed between yield and productive bushiness (r = 0.95), the mass of 1000 grains (r = 0.85), the number of spikelets in the ear (r = 0.84). Aleyskaya, Khabarovsk and Primorskaya 40 varieties stood out with the highest index of protein and gluten in grain. Variety Sunny 573 was distinguished by high hardness (67.5%) and grain type (785 g/l).

Efficiency of technologies for the use of mineral fertilizers when cultivating spring barley in the forest-steppe of the Middle Volga region

In the conditions of the forest-steppe of the Middle Volga region (Republic of Mordovia) there was carried out the research on studying the effect of various technologies for the use of mineral fertilizers, with and without taking into account the intra-soil variability of soil fertility indicators in crops of spring barley of the Zazersky 85 variety. The experiment was carried out in 2012 and 2018 in two fields of grain-row crop rotation on leached chernozem (humus in the 0-25 сm layer – 5.3-6.9 %, nitrate and ammonium nitrogen 6.1-16.8 mg/kg of soil, mobile phosphorus 83-182 mg/kg of soil and exchangeable potassium 90-196 mg/kg of soil). The scheme of the experiment: control (without fertilizers); average dose of fertilizers (N70P34K26 – in 2012, N72P36K25 – in 2018); differentiated dose (N53-80P24-43K17-34 in 2012 and N56-80P25-42K20-27 in 2018). Fertilizer doses are calculated for the planned barley yield of 3.0 t/ha. The experiment was based on the principle of a split plot, where plots of the 1st order were reserved for variants with fertilizers, and plots of the 2nd order (5 plots in each repetition) were used to determine the variability of intra-soil fertility and fertilizer application. On average, for two fields of crop rotation, the highest barley yield (3.14 t/ha) was obtained in the variant with differentiated use of fertilizers, which was significantly 72 % higher than the control and 13 % higher than the variant with average doses. The application of fertilizers taking into account the heterogeneity of nutrients in the soil provided the smallest range of variation in yield (0.8 t/ha) across the plots of the polygon with an insignificant level of variation coefficient (V = 9.8 %). The use of fertilizers in the cultivation of barley had a statistically significant effect on the increase in the weight of 1000 grains, plant height, productive tillering coefficient and ear length. Differentiated doses of fertilizers compared with the averaged doses led to a noticeable increase in the values of productive bushiness of plants (by 8.3 %) and spike length (by 3.9 %). The technology of applying mineral fertilizers, taking into account the intra-soil variability of soil fertility indicators, was distinguished by the highest level of profitability in the production of spring barley grain (47.6 %) compared to traditional (26.2 %) and fertilizer savings (by 7.5-8.5 %).

Effect of pre-sowing seed treatment with biologics on the spring barley (Hordeum vulgare L.) yield in the Lower Volga region of Russia

The biologization of crop production involves reducing the use of synthetic organic pesticides in the production cycle of harvesting, increasing the use of biological methods of plant protection that solve the problems of environmental pollution and agricultural products. The basis for the biologization of plant protection systems is the wider use of biological products that make it possible to obtain environmentally friendly, economically sound yields of major agricultural crops. In this regard, studies were conducted in the arid zone of the Lower Volga region, Federal Scientific Center for Agroecology, Russia from 2018 to 2020 to study the influence of pre-sowing seed treatment with chemical, biological protectants and physiologically active substances as well as an economic assessment of the impact of this agricultural to increase the yield of spring barley. The objects of research in field experiments were chemical seed protectant (Inshur Perform, CS), biological fungicide (BSKa-3), and organic fertilizers (Fertigrain Start, BP and potassium humate, BP). The maximum values for such indicators as field germination – 86%, plant survival for harvesting – 61%, productive bushiness – 1.04% were recorded in the variant of the use of biological preparations. There was also the highest number of grains in the ear – 14.5 pcs., the mass of 1000 seeds – 32.1 g. In comparison with the yield with the variants without treatment (control) and with the use of only chemical preparations, the yield in the variant with the use of biological preparations was, respectively, 25.7% more.

Genotypical response of barley to increased cadmium content in soil

The results of a comparative evaluation of spring barley (Hordeum vulgare L.) varieties obtained by different methods on control and provocative soil background for cadmium are presented. A total of 10 varieties were studied: Rodnik Prikamya, Novichok, Dina, Zazersky 85, Triumph, Tallon (hybridization and selection); Forward, Bionic, Vitrum (cell selection); In memory of Dudin (mutagenesis). The studies were carried out in 2021 under the climatic conditions of the Kirov region. Seeds of the plants of each variety were sown in vegetation containers filled with soddy-podzolic soil. Cadmium provocative background (6.4 ± 0.5 mg/kg) was created by adding cadmium acetate to the soil. The average yield of barley varieties in the control (soil background without cadmium) was 279 g/m2; against a provocative background – 216 g/m2. Under the conditions of cadmium stress, the yield of hybrids decreased compared to the control by 12.2 %, regenerants – by 29.6 %, mutant – by 42.4 %. Among the studied varieties, the Bionic variety, which has a regenerated origin, showed a consistently high yield both on the control (334 g/m2) and cadmium background (263 g/m2). Productive bushiness of hybrid barley varieties against the control background varied from 2.8 to 4.1; in regenerants – from 3.4 to 4.8; mutant varieties – 4.3 pieces. Under the conditions of cadmium stress, productive bushiness decreased by an average of 2.7 – in hybrids; for 3.4 – for regenerants, for 2.6 pieces – a mutant. Bionic, regardless of the soil background, compared with other varieties, had the highest productive bushiness. Significant differences in the content of polyphenols in the grain of the studied varieties on the control and provocation soil background for cadmium were not revealed. Under the conditions of cadmium stress, a decrease in the content of flavonoids in grain was noted, as well as the accumulation of cadmium (0.29–0.92 mg/kg). Varieties of hybrid origin showed the ability to accumulate cadmium in grain to a greater extent.

FORMATION OF BUSHINESS OF SPRING TRITICALE VARIETIES DEPENDING ON THE PREDECESSOR AND FERTILIZER

The article highlights the influence of precursors and levels of mineral fertilization on the formation of productive bushiness of spring triticale of different varieties. Depending on the influence of meteorological factors and weather, the influence of the studied elements of winter triticale cultivation technology, the indicators of the level of bushiness changed. The highest productive bushiness was formed by plants in the variants in which the best conditions were created for this. Triticale is an artificially bred crop that has not been studied enough in the global economy and requires research, but in Ukraine it is a well-known crop that takes its share in the overall crop structure. For example, the use of different norms of nitrogen fertilizers on the background of P60К60 contributed to an increase in the number of productive stems per unit area, and, accordingly, in the productive bushiness in general. When applying phosphorus and potassium fertilizers (P60К60), the number of productive stems did not exceed 585-591 pcs./m2, and the productive bushiness was 1.58-1.59, respectively. Triticale consumes a lot of nutrients from the soil to form a crop, which requires additional fertilization. It is not customary to apply organic fertilizers to this crop. only under its predecessors. Depending on the soil fertility, 60 to 90 kg of nitrogen, phosphorus and potassium are applied. Phosphorus and potash fertilizers are scattered under the main cultivation. And nitrogen fertilizers are divided into three fertilizing sessions during the phases of active plant growth. Experts also advise to apply superphosphate 10-15 kilograms per hectare during sowing with seeds. Triticale is very sensitive to sowing dates, which roughly coincide with the middle of the optimal sowing period for winter wheat. For sowing, it is necessary to select seeds with a germination rate of at least 92% and a purity of at least 98%. Treatment with compositions designed for winter wheat has a good effect on the yield. In most farms, the crop is sown using intensive technology in a row with the skipping of technological paths. Some farms use a cross-row or narrow-row sowing method. The seeding rate is usually between 1.5 and 5.5 million germinating grains per hectare. The recommended sowing depth is 4-6 cm, reduced on heavy soils and increased by 1-2 cm on light soils. By selecting the best predecessors, namely soybeans, sunflower and corn, we created optimal conditions for the productivity of this crop. In addition, mineral fertilizers had a positive effect on the formation of bushiness of spring triticale.

DEPENDENCE OF THE YIELD OF WINTER WHEAT (TRITICUM AESTIVUM L.) ON SOIL AND CLIMATIC CONDITIONS AND VARIOUS TILLAGES IN THE ZONE OF LIGHT CHESTNUT SOILS OF THE VOLGA-DON INTERFLUVE AREA OF THE SOUTHERN FEDERAL DISTRICT OF THE RUSSIAN FEDERATION

DEPENDENCE OF THE YIELD OF WINTER WHEAT (TRITICUM AESTIVUM L.) ON SOIL AND CLIMATIC CONDITIONS AND VARIOUS TILLAGES IN THE ZONE OF LIGHT CHESTNUT SOILS OF THE VOLGA-DON INTERFLUVE AREA OF THE SOUTHERN FEDERAL DISTRICT OF THE RUSSIAN FEDERATION

Evaluation of naked forms of spring oats by elements of the crop structure in the conditions of the Northern region

Due to the increased interest in the cultivation and use of naked oats in recent years, the evaluation of naked samples of spring oats of competitive variety testing by grain yield and the elements of its structure was carried out. The studies were conducted in 2013-2021. Eleven naked spring oat samples of the "Nemchinovka" Federal Research Center selection were studied. The Tyumensky Golozerny variety was used as a standard. During the experiment, sample yields ranged from 1.9 to 2.9 t/ha. Four samples stood out in terms of yield: 52h2467 (2.9 t/ha), 38h2273, 11h2619 (2.5 t/ha each), and 2h2348 (2.3 t/ha). The increase to the standard variety in these samples was 0.1-0.7 t/ha with LSD05 = 0.13-0.53 t/ha. The maximum grain yield (32% more than the standard) in a competitive variety trial showed the sample 52h2467. During the 9 years of research the high-est yield was observed with productive bushiness 1.1-1.4 units, the weight of 1 thousand grains 30.2-35.2 g and the weight of grains per a panicle 0.90-2.06 g. According to the results of the correlation analysis, the productive bushiness (r = 0,72), the weight of grains per a panicle (r = 0,70) and the weight of 1 thousand grains (r = 0,38) are the main elements of the crop structure, which have the strongest impact on the yield of grain in the Northern region.

Применение многомерного анализа для оценки селекционной ценности исходного материала твердой яровой пшеницы

The paper presents the use of multivariate statistical analysis for the selection of source material from 263 collection samples of durum wheat. As a result of factor analysis, 10 studied characteristics were reduced to 3 significant factors. The informative features, which should first of all be paid attention to when assessing this set of genotypes, are highlighted: the number of spikelets of the main spike, the number of grains of the main spike, grain weight of the main spike, grain weight per plant, average grain weight of an ear (factor 1); the length of the main spike and the density of the main spike (factor 2); productive bushiness (factor 3). The set of studied collection samples of durum wheat, based on informative characters, were divided into 3 reliably distinguishable clusters by the k-means method. Each cluster unites in itself from 56 to 123 samples of the most similar genotypes in terms of the complex of studied traits. The selected clusters are characterized as independent groups for subsequent breeding studies. Keywords: TRITICUM DURUM, SELECTION, FACTOR ANALYSIS, CLUSTER ANALYSIS, INFORMATIVE FEATURES, SOURCE MATERIAL

Productivity and resistance to stress factors of winter wheat varieties bred by ARC “Donskoy”

The purpose of the research is to evaluate modern varieties of winter soft wheat bred by the Federal State Budgetary Scientific Institution Agrarian Research Center “Donskoy” (ARC “Donskoy”) in terms of yield, elements of its structure and resistance to bio and abiotic stress factors. On average, over the years of the study (2019–2021), the yield of winter soft wheat varieties bred by the Federal State Budgetary Scientific Institution ARC “Donskoy” for the predecessor maize for grain changed from 6.33 t/ha for the Don 107 standard to 7.23 t/ha for the new varieties Flagman. Reliable yield increases in all years of the study were formed by the following varieties: Volny Don (+0.61 t/ha; +0.70 t/ha; +0.39 t/ha), Region 161 (+0.67 t/ha; +0.41 t/ha; +0.41 t/ha) and Flagman (+0.57 t/ha, +0.99 t/ha; +1.14 t/ha). An analysis of the correlation relationships between the yield of winter soft wheat varieties with elements of its structure showed that productivity in the conditions of 2019–2021 the following indicators had the maximum influence: productive bushiness (r=0.27±0.15), weight of 1000 grains (r=0.32±0.14) and density of productive stems (r=0.45±0.10). High frost resistance was noted in such varieties as Zhavoronok (74.4%), Region 161 (84.2%) and Aksai (70.5%). According to the results of the correlation analysis of yield with resistance to bio and abiotic environmental factors, no significant relationships were found. This indicates the possibility of combining high productivity and resistance to the studied stress factors in one genotype.