The Effect of Chemicals of Plant Protection Products on Soil Microbiocenoses

With the emergence of agriculture, humankind faced numerous difficult tasks. For example, how to use potential soil while saving its quality and functional properties, apply agricultural technologies effectively environmentally friendly, make them safe for human health biota, many others. There are several informative reliable recording criteria indicator systems that fully comprehensively describe changes in ecological condition agrocenoses. However, all these have one defect – time from impact factor “reaction” indicator. Early diagnosis agrocenosis is possible due biological component soil, namely microbiocenosis. Notably, microorganisms a large contact surface with environment, high rates reproduction space time, sensitivity changing living conditions. The reaction microbiocenosis activity (number ecologicaltrophic taxonomic groups, respiration intensity, microbial biomass content, phytotoxicity) under action chemicals basis plant protection products (PPP) was studied laboratory. It found number different ecological-trophic groups composition cymoxanil dimetomorph decreased by 1.5-4.5 times relative control, chlorperifosmethyl 1.1-2 times, prometryn not more than 1.5. content intensity carbon dioxide emissions when using dimethomorph compared control variant 44% 51.4-64.8%, respectively; 10-13% 8-12%. highest level phytotoxicity observed variants (20-24%), lowest (7-12%). shown, inhibition test culture development associated class PPP mechanism effect on organism. Low indicators explained influence only phytopathogenic micromycetes, but also micromycetes (cellulose-destroying, saprophytic) dominate. Therefore, can be shown as follows: PROMETRYN (the influence) → CHLORPYRIFOS-METHYL CYMOXANIL + DIMETOMORF