Revka T. Influence of biologically active preparations on productivity of agricultural lands in the conditions of radiation contamination of Zhytomyr Polissya

For the first time in the conditions of radioactive contamination of agricultural lands as a result of the Chernobyl accident, the effect of effective microorganisms (EM) drugs and biodynamic drugs on the productivity of agricultural lands under conditions of radiation contamination was established. The specific features of the effect of individual preparations on the yield and accumulation of radionuclides in the main agricultural crops and their effect on the migration processes of radionuclides in the trophic chain of soil-plant-products are elucidated. Under the influence of EM technologies, soil remediation is carried out by increasing the usefulness and reducing the pathogenic microflora. The results of the analysis of the destruction of linen fabric make it possible to conclude that the EM preparations enrich the soil with agronomically valuable microorganisms, which suppress the pathogenic microflora, contribute to the improvement of the soil. EM preparations contribute to the gradual decrease of the specific activity of 137Cs in the soil, which makes it possible to transfer, for a certain time, previously unsuitable for the Chernobyl catastrophe into the category of those where productive agricultural production can be conducted. Due to the after effect of organic compost, on average, over three years, the yield of green lupine increased by 18%, a tendency to increase the productivity of oat mix, winter rye and dink. In these crops and spring wheat, the same positive trend is observed from the use of biodynamic drugs "500" and "501". The performed researches have shown that the differentiation of sown areas in the experiment in 20 m strips of perennial grasses to reduce the mutual influence of different biodynamic drugs, leads to a sharp increase in the experimental area, the placement of areas in unequal soil conditions and, accordingly, to reduce the accuracy of research in all determined parameters.