Von Schmeling and Kulka first time demonstrated the systemic activity of fungicides in

Solution (By Examveda Team)

Von Schmeling and Kulka first time demonstrated the systemic activity of fungicides in 1966.
A SYSTEMIC fungicide may be defined as a fungicidal compound that is readily translocated as such in the plant, rendering the tissues penetrated toxic to fungi.
In their treatment they treated pinto bean and barley seed with 1,4-oxathiin derivatives gave disease control by systemic fungicidal action of such pathogenic fungi as Uromyces phaseoli and Ustilago nuda.