Injury or damage to a sensitive plant caused by exposure to a chemical is called what?

• A. Phytotoxicity
• B. Labeling
• C. Sprayer
• D. Micron

Answer: (A)

Phytotoxicity is the term used for injury or damage to plants caused by exposure to a chemical. It describes when a pesticide, herbicide, or fertilizer harms sensitive turfgrass or ornamentals instead of performing its intended function. Signs can include leaf burn, yellowing, stunted growth, or distorted foliage. This can happen from drift, applying at the wrong rate, using incompatible mixes, or applying under stressful conditions like heat or drought. The other terms refer to different aspects of pesticide use: labeling is the product’s instructions, a sprayer is the equipment used to apply it, and a micron is a unit of droplet size, not a plant injury.