Fungicides are pesticides used to:

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Fungicides are pesticides used to kill fungi or stop spores from germinating, which interrupts the disease cycle and helps prevent fungal infections from establishing on plants. They’re categorized by how they’re used: protectants form a protective barrier on the plant surface to prevent infection, while eradicants (curatives) are used to manage infections that are already present by killing the fungi. Some products can function in both roles depending on timing and application. This focus on fungi distinguishes them from products for other pests, like those that control rodents, weeds, or insects.