The article analyzes and substantiates the current state of Ukraine’s agricultural sector and cross-border cooperation with neighboring countries of the European Union. The main tasks and impact of cross-border cooperation are identified. A conceptual model for the development of cross-border cooperation in the agricultural sector has been formed, which will provide a sequence of assessments of the development of border areas on both sides of the border. The basic indicators for assessing the effectiveness of crossborder cooperation in environmental, economic and social development of Euroregions are determined, as well as their indicators are analyzed on the example of such border regions of Ukraine as Volyn, Zakarpattia, Ivano-Frankivsk, Lviv and Chernivtsi regions. The current state of Euroregions of Ukraine is characterized and recommendations are given to increase competitiveness, intensify economic activity of Euroregions, which are based on the periphery, forecasting the natural resource base of farms. It is proved that for effective development of ecological and economic bases of agrarian sector it is expedient to introduce economic tools on realization of export potential of agrarian sector of economy which will be combined among themselves on such aspects as institutional-regulatory, organizationaleconomic, production-technological and informationcommunication and will increase the functionality of preventive mechanisms to protect national and regional interests in border areas on both sides of the border and will form the preconditions for strengthening environmental, economic and foreign economic activity of cross-border and border regions.

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The research aimed to estimate the intensity of the impact of some environmental factors on the seasonal development of apical bark beetle (Ips acuminatus) in Scots pine (Pinus sylvestris) stands in the conditions of Ukrainian Polissya, as well as to evaluate the extent and dynamics of infestation of forest ecosystems. According to the results of the classification of the obtained satellite images, the dynamics of the area and number of tree mortality foci of P. sylvestris per quadrant was determined, which enabled us to create appropriate maps by the area of infestation and its propagation rate. In 2018, there was an intensive increase in the area affected by apical bark beetles compared to 2017. Whereas in 2019 the expansion of the affected areas compared to the previous 2018 slowed down significantly. Approximation of experimental data revealed the presence of a logarithmically normal distribution for the infestation area, and, consequently, the size of the pest population. The Principal Component Analysis revealed that in the studied area the most important factor influencing the population dynamics of ipid bark beetle and, accordingly, the intensity of its invasion, were weather and climatic conditions. Characteristics of the stand had little effect. It was established that favourable climatic conditions led to the fact that in the territory of Ukrainian Polissya I. acuminatus develops in more than two generations per year, and also slightly changed the attack strategy, namely the rate of damage and selectivity. An assumption on the further forming of favourable conditions for the proliferation of I. acuminatus, the emergence of new, not previously characteristic of the pest features of seasonal development and, consequently, the insect invasion on stands of P. sylvestris was made.

The article analyzes the ecological and economic foundations of the balanced development of beekeeping. It was determined that the increase in the amount of Ukrainian honey exports in 2020 is explained by the presence of shadow turnover of honey products in Ukraine and the increase in sunflower acreage. Ways to achieve high competitiveness and efficiency of operation of honey-producing enterprises: export of honey mainly as raw materials; lack of state support for the development of beekeeping. It is substantiated that with the pace of time and the development of society regarding the issue of beekeeping, as well as industrial society, the use of a significant amount of pesticides and agrochemicals by agricultural enterprises and agricultural holdings, the use of genetically modified organisms, etc., everything leads to the destruction of bees. In some regions, in general, extinction is observed both in Ukraine and outside the country. It has been proven that a feature of the territorial placement of beekeeping is that bees do not tolerate an unfavorable ecological environment, and at the same time they are in a certain way measures of its condition. Within the spatial limits of existence, bees can adapt to unfavorable living conditions, but at the same time, the danger of substances harmful to the human body getting into beekeeping products increases.