Fungicides are chemical substances used to kill or inhibit the growth of fungi, which can cause significant damage to crops, plants, and even animals. They are commonly used in agriculture to protect plants from fungal infections and improve yield quality. Fungicides can be classified into three main types:

Contact Fungicides: These protect only the parts of the plant where they are applied.

Translaminar Fungicides: These redistribute from the sprayed surface to the unsprayed surface of the plant.

Systemic Fungicides: These are absorbed by the plant and distributed throughout its tissues to provide protection.

Some fungicides are organic, like neem oil or sulfur, while others are synthetic and target specific fungal processes. Overuse of fungicides can lead to resistance in fungi, making them less effective over time.