On the basis of the "three sigma" rule, a statistical stratification of the Ukrainian effective community into economic welfare groups according to their social and economic status has been carried out, thus creating the basis for substantiating the expediency of reforming the forage production sector in order to further expand the production of organic livestock products through the up-to-date approaches to the formation and use of climate adaptive feed-related phytocenoses. In order to increase the productivity of grass fodder, an innovative model of the grass-grazing complex has been developed. Its structure includes a cyclic wedge of long-term cereal-bean pasture which involves perennial grasses of the botanical species adapted to the zonal ecological and technological conditions, a satellite wedge of traditional mixtures of annual crops and atypical pasture plants – burnet polygamous (Poterium poligamum Woldst. et Kit.), prairie dock (Silphium perfoliatum L.) and others, whose herbage is used during the off-season, when the main cyclic wedge is found to be low-yielding, as well as a sheltered base, equipped with outdoor hoppers and shelters designed to protect animals in bad weather. The introduction of meadows and pastures in the system of zonal fodder production will contribute to the improvement and stabilization of the production of cheap and adequately nutritious herbal feeds thus increasing the resource potential of the area.

The practical experience substantiates the need to treat soybean seeds with high-quality inoculants and VuksalKoMo 15 with the trace elements content of cobalt and molybdenum. The processes of inoculation of seeds in the form of rhizobial bacteria significantly improve the soy plants ability to fix atmospheric nitrogen in the early stages of development. We begin to observe the rhizobial formation on the corinium soybean system already at the stage of BBCH 12–13. This in turn will affect the yield and productivity of Rosin soybeans. One of the important aspects of soybean cultivation is providing not only macroelements, NPK, Ca, S, but also microelements. Carrying out experiments on the effect of seed inoculation on soybean yield, we combined an inoculant, VuksalKoMo preparation and Sdandak Top insecticidal fungicide preparation with a sowing period of up to 5–7 days in a tank mixture. One of the main requirements is the use of high-quality inoculants with a high content of viable nitrogen-fixing bacteria for processing soybean seeds. This, in turn, will ensure high yields of soybeans with optimal costs and the fastest return on investment, especially in today's conditions. The research results are aimed at solving urgent problems in the technology of growing leguminous crops, namely: developing a version of the technology for growing soybeans for the selection of varieties, adapted to a given climatic zone, the use of inoculants and micronutrients in the conditions of climate change

The article is devoted to the study of the intensity accumulation of heavy metals (Pb, Cd, Zn, Cu) by vegetables in agricultural lands. Vegetable products play important role in human nutrition and requirements for quality and safety are very strict. The study was conducted on dark gray podzolic soils in the Tyvriv district of the Vinnytsia region. The fruits of the cucumber variety Dzherelo, the zucchini variety Chaklun, and the pea variety Geneva were used for the research. It is noted that the main indicators of climatic conditions during the study period were favorable for growing vegetables. It was determined that among vegetables (food peas, zucchini, cucumber) the highest content of heavy metals was observed in pea fruits. At the same time, it was found that the Cd content in pea fruits exceeded the PL (permissible level) by 1.61 times at a concentration of heavy metals in the soil below the TVL. Among heavy metals (Pb, Cd) higher migration and translocation were observed in the studied vegetables according to Cd, and among heavy metals-trace elements (Zn and Cu) -according to Cu. It was found that pea fruits were characterized by the highest coefficient of accumulation of heavy metals (Pb, Cd, Zn, Cu). The risk factor for heavy metals in the studied vegetables was lower than the threshold level of 0.1, except for Cd in peas, where this figure was 1.61 times higher.

The purpose of the research lies in identifying the problematic aspects of ensuring academic mobility of students in the conditions of distance learning. The research methodology consists of the methods as follows: statistical, scientific abstraction, analogy, comparison, analysis, synthesis, graphic, tabular, systematization, generalization. The results of the research prove that the academic mobility of students is one of the effective methods of exchanging experience, knowledge and professional skills in order to increase the competitiveness of the future specialist and his ability to meet the requirements of the globalized labour market. In the course of the research, the problems of ensuring the academic mobility of students have been identified, namely: a low level of awareness of the possibilities of academic mobility, motivation and their financial capacity, the lack of interrelationship between the level of education and income, low rates of development of virtual academic mobility. Taking into consideration the downward trends in the participation of students from Ukraine in EU projects on academic mobility (969 in 2018, 852 in 2019, 1191 in 2020, respectively), it is proposed to intensify the process of obtaining a double diploma by students; to form a mechanism for guaranteeing further employment with a high level of remuneration; to introduce programs of educational crediting of academic mobility by commercial banks.

The man-made activity of mankind has led to the emergence of many global problems and caused the deterioration of the quality of the natural environment (air, water, soil). Of particular concern is the contamination of agricultural land with toxicants, in particular, radionuclides, which, entering the soil -plant -human body food chain, can reach toxic levels. Therefore, an important task is the removal of hazardous substances from the soil. Phytoremediation can be one of the effective methods for reducing its pollution. The article examines the effectiveness of phytoremediation of soils contaminated as a result of the accident at the Chernobyl nuclear power plant in certain territories of Polissia of Ukraine (Korosten district of Zhytomyr region). Nectar-pollinating plants were selected for the research, which was carried out for two years: great globe-thistle (Echinops sphaerocephalus), milk thistle (Silybum marianum), and white melilot (Melilotus albus). The results of the research showed that in the dry vegetative mass of milk thistle, great globe-thistle, and white melilot, the specific activity of 137 Cs over the two years of research was in the range from 30.8 Bq/kg to 238.5 Bq/kg, the accumulation coefficient -from 0.135 to 0.985, and the hazard coefficientfrom 0.055 to 0.395. The highest indicators of specific activity and accumulation coefficient of 137 Cs were observed in the vegetative mass of the white melilot, which amounted to 238.5 Bq/kg and 0.96, respectively, comparatively lower values -2.3 times and 2.3 times were found in the vegetative mass of milk thistle, 2.8 times and 7.1 times -in the vegetative mass of the great globe-thistle. At this level of accumulation of 137 Cs in the vegetative mass of nectarine plants from the soil, on average, over two years of research, 1130550 Bq of this radionuclide was removed from the soil per hectare of agricultural land with milk thistle, 621250 Bq with great globe-thistle, and 2851650 Bq with white melilot. The removal of 137 Cs with the vegetative mass of nectarine plants reduced the content of this radionuclide in the soil per 1 kg -from 3.4% to 8% on average over two years of research.