UDC 633.854.54
DOI 10.36461/NP.2025.74.2.011

TECHNOLOGY FOR THE CULTIVATION OF OILSEED FLAX, ADAPTED TO THE MEANS OF PRODUCTION OF AN AGRICULTURAL ENTERPRISE
P.G. Alenin, Doctor of Agricultural Sciences, Professor;
V.A. Guschina, Doctor of Agricultural Sciences, Professor; I.S. Ruzov, Postgraduate
Federal State Budgetary Educational Institution of Higher Education "Penza State Agrarian University"
Penza, Russia, tel. (8412) 628 367, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

With the worsening geopolitical situation in the world, flax has become extremely important not only for the food industry, but also for other sectors, occupying niche market positions. In Russia, the area for flax cultivation is increasing. Therefore, the analysis of flax cultivation under production conditions that depend on natural factors, biological characteristics of the crop and the available material and technical base of the agricultural enterprise is of particular importance. In this regard, the experience of growing oilseed flax in the LLC "Biokor-S" (Mokshansky district, Penza region), located in the zone of unstable moisture in the forest-steppe of the Middle Volga region, was studied. On average over four years (2021-2024), the seed yield of oilseed flax under the established technology was 0.99 t/ha, the content of toxic substances did not exceed the permissible levels, and no genetically modified organisms were found. Agrocompany "Biokor-S" regards oil flax as an alternative to sunflower. However, it does not replace it, but complements it in the crop rotation structure. Increasing the diversity of crops makes it possible to optimize technological processes in field cultivation, expand the product range and improve production efficiency.
Keywords: oilseed flax, cultivation experience, harmful objects, yield, oilseeds, raw material quality.

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UDC 574.23: 574.24: 577.2.01
DOI 10.36461/NP.2025.74.2.008

CORRELATION OF MORPHOLOGICAL, PHYSIOLOGICAL AND BIOCHEMICAL CHARACTERISTICS OF COTTON PLANTS OF THE BC4F7 GENERATION UNDER SALT STRESS CONDITIONS
N.R. Rakhmatova, (PhD), Senior Research Officer; A.Kh. Makamov, (PhD), Head of Laboratory;
A.S. Imamkhodzhaeva, Candidate of Biological Sciences, Head of Laboratory;
N.N. Khusenov, (PhD), Head of Laboratory; Zh.K. Norbekov, (PhD), Head of Laboratory;
U.A. Boykobulov, Research Assistant; Sh.O. Kushakov, Research Assistant;
Z.T. Buriev, Doctor of Biological Sciences, Professor, Chief
Center of Genomics and Bioinformatics of the Academy of Sciences of the Republic of Uzbekistan,
Tashkent, Uzbekistan, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

This work shows the correlation of morphological and physiological traits (dry weight of a plant, stem, root, live weight of a plant, stem, root, plant height) and chlorophyll and carotenoid content of cotton in 30 families of the BC4F7 generation of genomically complex hybrids grown under laboratory conditions with artificially induced salt stress (200 mM NaCl solution). The amount of photosynthetic pigments was found to vary depending on salt stress.
Chlorophyll "a", chlorophyll "b" and carotenoids were analyzed for their content under salt stress. A significant decrease in chlorophyll "a", chlorophyll "b", total chlorophyll and carotenoids was observed under salt stress conditions compared to optimal conditions. Under artificial salinization conditions, the morphological traits and the content of chlorophyll "a", "b", total chlorophyll and carotenoids of 30 families of the BC4F7 generation of genomically complex hybrids were studied against the background of five control cotton varieties and lines. Based on the results of the analysis of photosynthetic complex pigments, 17 families (O-3, O-5, O-6, O-12, O-13, O-14, O-15, O-16, O-18, O-21, O-23, O-27, O-28, O-32, O-33, O-34 and O-35) were recommended as resistant to salinization conditions.
Keywords: genomically complex hybrid, family, morphological and physiological traits, correlation, chlorophyll "a", chlorophyll "b", SPAD -502, carotenoids, salinization.

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UDC 633.11″321″:631.5
DOI 10.36461/NP.2025.74.2.007

GRAIN QUALITY OF SPRING WHEAT VARIETIES DEPENDING ON DIFFERENT FORECROPS AND FUNGICIDE TREATMENT
Ch. M. Islamova, Candidate of Agricultural Sciences, E. Yu. Kolesnikova, postgraduate,
E. V. Korepanova, Doctor of Agricultural Sciences, Associate Professor,
V. N. Goreeva, Candidate of Agricultural Sciences, Associate Professor
Federal State Budgetary Educational Institution of Higher Education “Udmurt State Agrarian University”,
Izhevsk, Russia, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Increasing the yield of agricultural crops and improving their quality are main important tasks for modern scientific researches that require data analysis with implementation of innovative technologies and efficient land management. The preceding crop variety chosen and the leaf-stem diseases treatment applied are key successful factors in agriculture, affecting the yield and quality of agricultural production. In this regard, field experiments were carried out on sod-podzolic medium loamy soils under conditions of the Mozhginsky state varietal test site in the Udmurt Republic in 2021-2023. The results of the current research showed that the highest grain yield of 3.76-3.80 t/ha was obtained from the spring wheat varieties as Ulyanovskaya 105 and Chernozemnouralskaya 2, sown after the red clover 2 years ago with the Alto Super fungicide spraying of crops. The use of the red clover as a forecrop increased the protein content in wheat varieties by 0.6% and gluten by 1.1%. The Alto Super fungicide spraying led, on average, to an increase of the protein content in the grain yield by 0.2% and gluten by 0.3%.
Keywords: spring wheat, variety, forecrops fungicide, yield, protein, gluten.

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UDC 633.31/.37; 631.81
DOI 10.36461/NP.2025.74.2.004

AGRO-ENERGY ASSESSMENT OF THE CULTIVATION OF PERENNIAL HERBACEOUS LEGUMES
Sh.M. Abasov¹, Candidate of Agricultural Sciences, Senior Research Officer,
M.Sh. Abasov¹, M.Sh. Gaplaev¹, Doctor of Agricultural Sciences,
A. Kh. Kozyrev², Doctor of Agricultural Sciences, Professor,
L.Zh. Basieva³, Candidate of Agricultural Sciences, Associate Professor
¹Federal State Budgetary Scientific Institution "Chechen Scientific Research Institute of Agriculture", Grozny, the Chechen Republic, 8(967)9530111, This email address is being protected from spambots. You need JavaScript enabled to view it.
²Federal State Budgetary Institution of Science "North Caucasus Research Institute of Hill and Foothill Agriculture", Branch of the Federal Research Center "Vladikavkaz Scientific Centre of the RAS", Mikhaylovskoye village, North Ossetia–Alania, 8(918)7050330, This email address is being protected from spambots. You need JavaScript enabled to view it.
³Federal State Budgetary Educational Institution of Higher Education "Gorsky State Agrarian University", Vladikavkaz, North Ossetia-Alania, 8(919)4240128, This email address is being protected from spambots. You need JavaScript enabled to view it.

An agroenergetic assessment of technological cultivation methods for perennial herbaceous legumes that ensure stable phytomass yields under the conditions of the Central Fore-Caucasus was carried out. The research objects were regionally adapted varieties of blue-hybrid alfalfa, red clover and Hungarian sainfoin cultivated in the North Caucasus region, as well as environmental factors limiting the process of symbiotic atmospheric nitrogen fixation. The results of the energy assessment carried out showed that the energy input was identical for all the crops studied and differed by 2.65-2.67 GJ/ha in terms of the cost of the second cut for the blue-hybrid alfalfa and red clover crops. When growing blue-hybrid alfalfa, an energy yield from 32.37 GJ/ha was achieved in the control variant to 38.08 GJ/ha in the variant with the most active symbiotic nitrogen fixation. The energy costs for hay and protein had the opposite pattern and decreased to 5.55 GJ/t hay and 32.27 MJ/kg protein. The cultivation of red clover gave an energy yield of 21.73...26.88 GJ/ha, with the amount of energy increasing with the improvement of plant nutrition. When all the factors investigated were optimized, 23.7 % more energy was obtained compared to the control. In the Hungarian sainfoin crop, the patterns were similar between the variants, but they had the worst energy indices among the crops studied. Thus, only 19.04...22.62 GJ/ha of energy were obtained at harvest, the cost price of hay in the best variant was 8.03 GJ/t, protein – 52.8 MJ/kg, making the fodder obtained the most expensive of the experiment.
Keywords: alfalfa, clover, sainfoin, macro- and micronutrients, rhizotorphin, energy efficiency.

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