Of the two types of fungicides, what is the function of protectants?

Protectants are fungicides designed specifically to prevent plant diseases from occurring. They work by creating a barrier on the surface of the plant, inhibiting the germination of fungal spores or blocking their entry into the plant tissue. By applying protectants before the onset of disease, they help safeguard the plant against potential infections caused by fungi, ensuring that healthy plants remain disease-free.

In contrast, other types of fungicides, like curatives, are used to treat infections after they have already established themselves within the plant. The primary focus of protectants is proactive, aiming to prevent problems rather than remedy them once they have developed. This preventive role is vital for maintaining healthy plants in agricultural and horticultural practices.