Аннотация
Abstract An intensive decrease in soil fertility is observed in the Republic of Kazakhstan. The main reason is the low volumes of mineral fertilizers, only 6-8 kg per hectare of arable land. Traditional mineral fertilizers are inaccessible due to high prices. Therefore, there is a need to search for alternative types of fertilizers. Barley is the main grain crop from the group of “brown” breads used for fodder and food purposes. An important reserve for barley yield increase is the use of fertilizers. This publication presents the results of research work on the environmental safety and effectiveness of the use of the “Agrobionov” preparation, produced from local, affordable, cheap industrial waste - ash and carbon black for soils fertilizing under barley crops. The content of heavy metals and radionuclides was determined by the method of inverse voltammetry (GOST 50686-94, GOST 50683-94), the grain yield was recorded by the direct combining method, the statistical processing of the crop was carried out according to the Fisher method as adapted by Dospekhov, the yield data is 100% pure and 15% standard humidity. The results of the study showed that the use of the “Agrobionov” preparation for chernozem soils fertilizing under barley crops is environmentally safe and gives an economic effect. The content of heavy metals and radionuclides in the soil and grain of barley does not exceed the maximum permissible concentrations (MPC) and tentatively permissible norms (TPN). Barley grain productivity increases, costs for its production decrease.