Increasing the yield of cultivated plants is one of the priority tasks of modern crop production. In areas with unfavorable agroclimatic and soil conditions greenhouse farming, cultivation of plants in artificial soils and hydroponics are actively developing. Therefore, intensification of production is closely related to the use of mineral and organic fertilizers. The use of organic fertilizers as polyfunctional preparations is one of the most important factors in increasing soil fertility.
Among a wide list of organic fertilizers, an important place is given to a group of substances of natural origin — humic. Such fertilizers are obtained by extraction of humic acids from peat, brown coal, sapropel and some types of clays. Another way to obtain them is composting of organic waste using earthworms or microorganisms. Liquid fertilizers obtained in this way are called biohumus. The use of biohumus (together with the active effect of humic acids on soil properties and plants) contributes to higher yields, improves soil fertility, reduces the cost of cultivation, and allows to obtain environmentally friendly products.
Unlike mineral fertilizers, they are catalysts of a number of biochemical processes, which is associated with an increase in the number of soil microorganisms, their active production of exoenzymes and the processes of transformation of plant fertilizers.