Biological features of growing tomatoes in closed agroecosystems

Researches were conducted in 2019-2020 in the department of closed artificial agroecosystems for plant growing on the basis of Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM”, Moscow. The object of the study was the seeds of tomatoes Solanum lycopersicum L. The aim of the research was to study the effect of a biostimulant (succinic acid) on biological characteristics and productivity of Solanum lycopersicum L. grown in the substrate hydroponics of a climatic chamber. As a result of conducted researches, there was identified the most effective method of using succinic acid as a biostimulator – inoculation of seeds, which contributed to an increase in yield with a significant rise in relation to the control – 64.1%. The average fruit weight in this variant was 114.1 g, which exceeds the control by 37.0%. The complex application of the biostimulator provided an increase in the average fruit weight in 18.6%, the addition of hydroponics to the nutrient solution is 4.1%