Seed hemp can be used to produce products and restore soil fertility. The adaptive potential of cannabis varieties can be implemented by optimising their cultivation technologies. The purpose of this study was to substantiate the features of forming the productivity of cannabis varieties adapted to organic cultivation technologies. Field studies were conducted during 2019-2021 on leached chernozems. Research methods: field, laboratory, statistical and comparative calculation. The regularities of yield formation of hemp straws, fibre, and seeds depending on the genetic potential of varieties and cultivation technology were investigated. The suitability of five hemp varieties for organic cultivation was evaluated. It was established that the introduction of organic cultivation technology has a positive effect on crop productivity. With organic cultivation of Hliana and Hloba varieties, the increase in the yield of straw (0.07-0.11 t/ha) was statistically insignificant compared to inorganic technology. Cultivation of Zolotoniski 15 and Sula varieties using organic technologies increased the yield of hemp straw by 0.14 t/ha. The Lara variety showed an insignificant decrease in the straw yield. This confirmed the theory that the introduction of organic cultivation of hemp will not lead to a decrease in yields. Organic technologies for growing hemp contributed to an increase in their yield compared to the traditional one, provided that varieties were selected correctly. The best suitability for organic cultivation in terms of fibre yield was recorded in the Lara variety. The obtained results will be used to improve and introduce organic technologies for growing adapted hemp varieties, depending on the purpose of fibre or seeds

Today the group of companies “Arnika”, Hlobyne town, Poltava region, is one of the largest companies in Ukraine and in the world that grows agricultural crops using organic farming technologies. It is clear that in the transition from classical technologies to organic production there were a number of problems to solve which had to use both existing experience and new research. One of the branches of agriculture in Ukraine, which best meets the requirements of organic farming, is hemp growing. The biological properties of the crop play an important role in this matter, namely that they require almost no chemical protection against pests and diseases. The scope of raw materials from hemp is significantly expanding. Besides the traditional use in light, construction, pulp and paper, automotive and aircraft, chemical industries, hemp products began to be used for the manufacture of medicines, perfumes, cosmetics, high-quality oil, additives to many foods and others. It is the latest uses of hemp that require the use of environmentally friendly products that would be of high quality, greater demand and cost. The creation of varieties and hybrids of plants that meet the needs of the market is devoted to the research conducted during 2014-2020 and still currently continues. In this article, we have tried to show our research, achievements and conclusions. Initially, the plants with a reduced content of THC (0.01-0.001%) and an increased content of CBD (0.50-1.50%) and CBG (0.02-0.70%) in the variety Zolotoniski 15 were selected, and later the breeding work was continued with the varieties Globa, Lara, Sula and a number of future varieties that will be submitted for the state variety testing. In the first three years, the targeted selection in the direction of increasing the content of CBG in cannabis plants proved to be quite effective. But life sets new challenges and our search continues. Key words: cannabinoids, tetrahydrocannabinol (THC), cannabinol (СBN), cannabidiol (CBD), cannabigerol (CBG), cannabichromene (CBC), enzymes, precursors, breeding, technical hemp, variability, correlation.

The oil content of hemp seeds is controlled by the genotype and in the conducted studies did not depend on the growing technology; however, this factor had a synergistic effect with others. The protein content of hemp seeds during the years of research did not depend on weather conditions. Like other quality indicators, it had a slight variation, which indicates the significant role of the genetic characteristics of the varieties. On average, over the years of research, the protein content of the variants grown according to conventional technology was 25.2%, and according to transitional technology, it was 0.03% higher, which was within the limits of statistical error. The organic technology ensured the protein content at the level of 25.3%, and the use of the BioStymix-Niva microbial biodegrader -biodestructor contributed to the further growth of the indicator to 25.4%. The oil content of hemp seeds is not limited by other important characteristics, such as the yield of the hemp stems or the fiber content. Only the Glyana variety showed inverse correlations with plant height, hemp stems and seed productivity, they were of medium strength (r = -0.60 --0.43). In the Zolotoniski 15 variety, only one inverse relationship was recorded, i.e. plant height (r = -0.57). No correlation was established between protein content and oil content in seeds. Correlations may change depending on other factors of cultivation, including weather conditions, elements of technology, etc., but the evaluation of varieties for cultivation according to these characteristics can significantly increase the efficiency of the production of cannabis products.