Abstract
Method of hydroponic growing of the plants is currently the most widely implemented for a year-round production of vegetative biomass. It has a number of advantages over traditional methods of growing, especially within the regulation of physiological processes depending on the final quality of the product. This article is devoted to the study of the accumulation of crude and dry bio mass of plants grown in the hydroponics conditions. As the nutrient medium available composition of the macronutrients of Murashige and Skoog medium (MS) is used. As the activator and regulator of physiological processes sodium humate production of JSC «Shubarkol komir» was used. The results of growing lettuce, cucumbers, tomatoes, as well as the influence of various substrates on the accumulation of dry and crude bio mass in plants are studied. The results of experiments indicated a positive effect of sodium humate on the accumulation of dry and crude weight of plants in hydroponics conditions. Also there was a close relationship between the type of substrate and the accumulation of raw and crude mass of plants.