What type of factor determines when to use pesticides for disease control?

The severity of disease is a critical factor in determining when to use pesticides for disease control. When a disease is confirmed to be severe, it poses a significant threat to the health of the plants within a given landscape. In such cases, timely intervention with appropriate pesticide treatments can help mitigate the spread of the disease and reduce potential damage.

Assessing the severity helps professionals make informed decisions about the urgency and type of control measures needed. It ensures that the application of pesticides is justified based on the actual risk to plant health rather than relying on subjective measures or preferences. By focusing on severity, applicators can prioritize resources and efforts effectively to protect the overall health of the landscape.