What is the main way through which Mefenoxam operates against pathogens?

Mefenoxam is primarily a systemic fungicide, which means that it is taken up by the plant and can move throughout its tissues. This characteristic allows Mefenoxam to provide comprehensive protection against pathogens, as it can reach areas of the plant where the pathogens may not be directly contacted by the application. Systemic movement ensures that the active ingredient is distributed throughout the plant, enabling it to protect not just the surfaces but also internal tissues, effectively preventing the establishment and spread of various fungal diseases.

This ability to move within the plant enhances its efficacy, especially against pathogens that might invade the plant structure. In contrast, methods such as preventing nutrient absorption or contact action do not leverage this systemic capability, which is essential for effective pathogen management in many agricultural contexts.