Fungicides

A: The damage from an over application of fungicide is to the soil microbes where the plant roots are. When the beneficial microbes are killed off, the plants growing there suffer. Those microbes are responsible for the nutrients your grass gets.

A: The acute toxicity of fungicides to humans is generally considered to be low, but fungicides can be irritating to the skin and eyes. Inhalation of spray mist or dust from these pesticides may cause throat irritation, sneezing, and coughing.

A: Although fungicides are generally low in toxicity, they present off-target risks—even biological fungicides. Before using a product, read the label and adhere to its guidance. For example, many fungicides pose a risk to aquatic species. Do not apply them near open water or where they may run into open water.

A: Respirators protect applicators from inhaling airborne chemicals or dusts that may cause temporary or permanent harmful health effects, including death. While the primary reason to wear a respirator is to protect your health, a secondary reason is that some pesticide product labels specify that a respirator be worn.

A: Fungicides are safe to use when applied according to product directions. Always wear the recommended personal protective equipment and apply it on days with little wind to avoid chemical drift onto non-targeted plants and ensure your safety.

A: The higher the temperature and lower the relative humidity, the greater the opportunity for fungicide evaporation or volatilization. This can be avoided by spraying early in the morning when temperatures are lower and the relative humidity is higher.