Influence of biological preparations on organic cultivation of vegetable plants

The introduction of organic technology for growing vegetable plants will help to reduce the environmental burden of pesticides and produce safe vegetable products with high yields. The purpose of the study was to investigate the effect of biological preparations on the organic cultivation of vegetable plants. Field, measuring and weighing, mathematical and statistical methods were used to determine the efficacy of the preparations. The study was conducted in 2018-2021 in different regions of Ukraine. It was established that the systemic use of biologics during the growing season of vegetable plants provided rapid growth and development, helped to increase immunity to diseases, reduced the activity of pathogenic microorganisms in the soil, and provided an increase in overall yield. The general use of biologic preparations in open ground conditions contributed to a total potato yield of 25.4 t/ha, and the complex use of preparations on Brussels sprouts forms a larger number of heads – 90 units. The Organic Balance biological product provided an increase in yield of up to 3.5 t/ha and 90% marketability of products when growing Chinese cabbage. Chemical analysis showed that the use of biologics increased the dry matter in tomato fruits by 1.03 % – in the Rio Fuego variety and 1.39% – in the Missouri variety. The yield increase in the studied varieties of asparagus beans Laura and Purpurova was 0.5 and 0.6 t/ha compared to the variants without seed inoculation. The use of biological preparations provided a higher yield in tomato plants of the Asvon variety by 2.2 t/ha, significantly reduced the content of nitrates in fruits to 50-80 mg/kg, while in the control – 110-170 mg/kg, increased the content of dry matter by 1.03 and 1.39%, depending on the variety. The gross yield of winter garlic with the use of biologics increased by 5%, and the marketability of potato tubers increased by 5%. Organic technologies would allow farmers to minimise the use of pesticides, produce environmentally friendly products, and increase yields