USE OF BIOLOGICALLY ACTIVE SUBSTANCES IN AGRICULTURAL PREPARATIONS

Abstract

Introduction. The production and use of growth stimulants, both as single preparations and in combination with traditional organo-mineral fertilizers, is of great scientific interest and practical significance. In this connection, one of the most promising approaches to solving this problem is the development of preparations based on plant growth regulators, including both biostimulants obtained by microbiological synthesis and biostimulants obtained by chemical synthesis. Purpose. To develop a growth-stimulating preparation using non-traditional raw materials and test it in laboratory and field conditions on pilot batches of barley and wheat seeds encapsulated with the preparation being studied, which contained the following components: sodium humate, hydrated fullerenes, an aqueous solution of shungite, microbiological carotene in a certain ratio. Methods. Laboratory and field experiments to study the effect of the application of preparations with different components on the growth and development of barley and spring wheat were carried out on the basis of V. Dokuchaev Kharkiv National Agrarian University at the Department of Plant Growing in 2020. Results. The results obtained during laboratory experiments showed that the application of the preparation "Humyr" had a stimulating effect on the growth of plants. Seedlings in the test variant appeared a day earlier than the control ones, and the plants of the test variant were ahead of the control ones in development. At the end, the average length of seedlings was 9.5 cm in the control, and it was 13.8 cm in the test. The average mass of seedlings was 1.6 g in the test. Thus, in the preliminary laboratory experiments it has been shown that the application of the preparation at the first stages of plant growth had a stimulating effect, ensuring an increase in the length and mass of seedlings in the tests compared to the control ones. Conclusions and perspectives. Research and development of new non-traditional preparations which, along with known plant growth stimulants, increase the productivity of crops in food production were carried out. The developed preparation “Humir”, in addition to increasing the yield of grain crops, had good wettability and a film-forming effect. After spraying, it caused a creation of thin film on the surface of the leaf, which was being absorbed by the plant for several days. Because of this, “Humir” can also be successfully used to combat diseases such as powdery mildew, late blight, bacteriosis, etc.