The upcoming discussion will update you about the difference between soil pH and Soil Eh.
Difference # Soil pH:
i. It defines as the logarithm of the reciprocal of the hydrogen ion concentration in gram per litre.
ii. It is represented by pH = log (1/H+).
iii. It represents the intensity of acidity of a solution.
iv. The pH value range from 0-14, where pH 0 represents the highest limit of active acidity and pH 14 the highest degree of basicity or alkalinity.
v. Neutrality represents pH 7.0.
Difference # Soil Eh (Redox potential):
i. The tendency of a given system (electron gain or loss) to oxidise or reduce the susceptible substance is known as redox potential.
ii. Eh measures the intensity with which oxidation reduction is proceeding and is expressed in volts.
iii. It is positive in aerobic soils and negative in highly reduced soils.
iv. The redox potential of water and top layers of submerged soils is +3 to +5 volt.
v. The Eh of lower layers of submerged soil is 0.2-0.3 volt.