Dehydrogenase enzyme is often used as a measure of any disruption caused by pesticides, trace elements or management practices to the soil, as well as a direct measure of soil microbial activity [45, 46]. It can also indicate the type and significance of pollution in soils. It has been found that dehydrogenase enzyme is high in soils polluted with pulp and paper mill effluents [47] but low in soils polluted with fly ash [48].
Similarly, higher activities of dehydrogenases have been reported at low doses of pesticides and, lower activities of the enzyme a higher doses of pesticides [49]. As most areas of the world are often polluted by different industrial