Ecological Rationing of Doses of a Multicomponent Carboncontaining Preparation Through Heavy Metal Content and Soil Microbiological Activity

Abstract

The article deals with the results of environmental regulation of doses introduced into a multicomponent carbon-containing preparation for the burning of heavy metals and the microbiological activity of the soil. The relevance of the research is based on, on the one hand, in global degradation, degasification and reduction of soil fertility. On the other hand, it is the worldwide accumulation of production and consumption waste. This study aimed to assess the effect of doses of the product from ash, slag, and carbon black on pH, heavy metal content, and microbiological activity of ordinary chernozem soil for cultivating spring wheat. The experiments were conducted in a walled-zone of Northern Kazakhstan. Soil pH was determined by a potentiometric method, the application of floe discovered the microbiological activity of the soil, the microflora was accounted for by sowing the soil suspension on solid nutrient media, and heavy metals were determined by stripping voltammetry. Bacteria utilizing organic nitrogen compounds; microorganisms consuming mineral nitrogen; oligonitrophils; bacteria mobilizing mineral phosphates; cellulose-destroying microorganisms; nitrification and mushrooms were studied. The studied preparation was observed to contribute to the neutralization of the soil, and the activation of microbiological processes. According to the evidence, it can be verified that the preparation of ash and carbon black ambiguously affects the number of microorganisms. An increase in the number of ammonifying bacteria, nitrifying agents and the coefficient of transformation of organic matter, as well as an increase in the availability of soil with easily hydrolyzed nitrogen, were noted. The content of heavy metals did not exceed the maximum permissible concentration. Thus, the use of a product based on ash, slag, and carbon black to fertilize black earth soils on spring wheat crops are environmentally safe.

Effectiveness of the Use of Ash and Slag Fertilizer on Ordinary Chernozem for Linum usitatissimum Crops

“…Studies by Khusainov et al (2020b) have shown that the introduction of preparation from ash and technical carbon on chernozem soils in doses of 100-500 kg/ha for common flax crops is environmentally safe. Khusainov et al (2020a) indicate that the use of ash and slag fertilizers and technical coal is environmentally safe, the content of heavy metals and radionuclides does not exceed the MAC and it also improves the biological properties of the soil, contributes to an increase in the number of ammonifying bacteria acting as nitrifiers in the soil on spring wheat crops. Jala and Goyal (2006), in their studies on the use of Ground Fly Ash (GFA), note a positive trend in improving the physico chemical properties of the soil: An increase in the water-holding capacity of the soil and moisture content by 2.85-4.43%.…”

“…We studied the effect of different doses of fertilizer on the edaphon of ordinary chernozem. The content of heavy metals in the soil was studied depending on different doses of fertilizer (Khusainov et al, 2020a).…”