Microbiological preparations influence on growth and development processes, yield and quality of cucumber harvest in winter industrial greenhouses

The purpose of the study is to determine the influence of a complex of domestically produced microbiological preparations on growth processes on the 39th, 67th and 95th days of cultivation, as well as to assess the influence of the complex on the production of biomass by plants, the yield and the chemical composition of cucumber fruits (Cucumis sativus L.). The study was carried out in winter industrial conditions during 2021-2022. Parthenocarpic cucumber hybrids Mewa F1 and Valigora F1 were chosen as objects of study. The preparation was added by adding it to the tank mixture at thirty-day intervals throughout the entire growing period. Biometric measurements were recorded weekly. As a result of research, a positive stimulating effect of a complex of microbiological preparations on the processes of growth and development was revealed; the use of a complex of biological preparations made it possible to reduce the time for hybrids to enter the fruiting phase by an average of 2-3 days, enhanced the accumulation of biomass by hybrids and contributed to an increase in the yield and quality of the resulting crop. A comparative analysis of growth processes and yields of cucumber hybrids Mewa F1 and Valigora F1 when using root fertilizing with a complex of biological products showed greater efficiency from their use. When using biological products, a positive effect was noted on the growth and development of cucumber plants, as well as on an increase in leaf blade and leaf surface area (LSA). The dates of the onset of single and mass flowering of plants and single fruiting occurred earlier when using a complex of biological products by 1-5 days. When assessing the influence of a complex of biological products on the development of the photosynthetic apparatus, a positive effect of biological products on the area and leaf surface index on the 39th, 67th and 95th days of cultivation was established. In addition, a significant effect of the complex on increasing productivity per m2 per revolution was revealed. In the studies conducted, the increase in yield occurred due to an increase in the mass and diameter of the fruit. The complex of preparations had virtually no effect on the overall height of plants and weekly growth. A comparative analysis of growth processes and yields of cucumber hybrids Mewa F1 and Valigora F1 when using root fertilizing with a complex of biological products showed greater efficiency from their use.