Tecnazene is primarily used as a fungicide in agricultural settings, especially for the protection of stored potatoes. It prevents the development of common scab and other fungal diseases during storage by inhibiting spore germination and mycelial growth. The compound is applied as a dust or spray treatment before or after harvest, providing a protective barrier on the tuber surface. Due to its volatility, tecnazene effectively fumigates storage areas, offering continuous protection over long periods. It is valued for its residual activity and ability to control pathogens without significantly affecting seed viability or plant growth when used at recommended doses.