The Effect of Microbiological Processes on Redox Potential Dynamics in Aggregates of Loamy Soils of Different Genesis

Incubation for 30 to 150 min resulted in a permanent decrease of redox potential in loamy soil aggregates owing to the activity of microorganisms and penetration of oxygen from the air into the aggregates. It was found that (1) the initial value of redox potential depended on the soil type, (2) soil moisture and organic substrate determined the rate of decrease of redox potential, and (3) the changes in redox potential were dependent on its initial value.