Effect of some ecological factors of degradation of propanil, linuron, and their transformation product 3,4-dichloroaniline in soil.

The degradation of xenobiotics was investigated in model experiments in soddy-podzolic soil as a function of their concentration, pH moisture content, temperature, and aeration of the soil, and presence of organic and mineral compounds. The main and secondary factors determining the persistence of xenobiotics in soil were established and approximation formulas for calculating their persistance criteria (ty) were proposed.