When are protectant and eradicant fungicides applied?

The application of protectant and eradicant fungicides is strategic, stemming from their specific functions in disease management. Protectant fungicides are preventative measures, applied before the onset of a disease to create a barrier that wards off pathogens. This preemptive approach is crucial for preventing fungal infection from establishing itself in healthy plants.

In contrast, eradicant fungicides are intended to address existing infections. They are applied after the disease has become evident, targeting the pathogens causing the issue with the goal of eliminating or controlling the infection.

Thus, the combination of these two approaches—applying protectants before disease occurrence and eradicants in response to an existing disease—highlights the integrated pest management practices that effectively utilize both prevention and treatment strategies.