Dynamics of the structural state and enzymatic activity of calcic chernozem under the influence of biologically active drugs

Abstract

The results of many years of research on the individual and complex effects of biologically active substances on the structural state and enzymatic activity calcic chernozem – humic preparation Lignohumate and microbiological fertilizer “Baikal-EM” – are presented. It was found that biologically active substances contribute to an increase in enzymatic activity, humus content and an improvement in the state of the soil structure. When both preparations are applied directly to the soil, the maximum effect and statistical reliability of this effect on the structural characteristics of the soil are shown even under extremely unfavorable weather conditions. At the same time, the structural coefficient during the study period increases from 1.5 to 2-2.7 in comparison with the background variant, which makes it possible to assess the structural state of the soils as “excellent”. In general, the activity of enzymes during the research in the cultivation of winter crops tended to stable growth. The cessation of the application of liquid complex fertilizers and the transition to a spring crop led to a decrease in the activity of enzymes and their return to background values.