What is a common symptom of spray injury?

What is a common symptom of spray injury?

• A. Leaf Burn At Tips And Margins.
• B. Deep Root Rot.
• C. Stem Splitting.
• D. Flower Abortion.

Answer: (A)

Spray injury is phytotoxic damage to plant tissues caused by pesticides. The most common symptom on ornamentals and turf is leaf burn at the tips and margins. When pesticides contact leaf surfaces—especially with high rates, sensitive varieties, or adverse weather—tissue at the leaf edges desiccates and necroses first, producing brown, burned-looking margins and tips. You may notice this on new growth first, with the burn spreading along the edges as the damage progresses. The other options aren’t typical signs of spray injury: deep root rot is a soil-pathogen problem affecting roots, stem splitting usually results from growth or environmental stress rather than foliar pesticide damage, and flower abortion relates more to systemic effects on reproductive development or other stresses, not the common foliar burn pattern from spraying. To prevent this kind of injury, ensure proper nozzle choice, accurate calibration, appropriate rates, and avoid spraying in stressful conditions like hot, windy days.

Spray injury is phytotoxic damage to plant tissues caused by pesticides. The most common symptom on ornamentals and turf is leaf burn at the tips and margins. When pesticides contact leaf surfaces—especially with high rates, sensitive varieties, or adverse weather—tissue at the leaf edges desiccates and necroses first, producing brown, burned-looking margins and tips. You may notice this on new growth first, with the burn spreading along the edges as the damage progresses.

The other options aren’t typical signs of spray injury: deep root rot is a soil-pathogen problem affecting roots, stem splitting usually results from growth or environmental stress rather than foliar pesticide damage, and flower abortion relates more to systemic effects on reproductive development or other stresses, not the common foliar burn pattern from spraying. To prevent this kind of injury, ensure proper nozzle choice, accurate calibration, appropriate rates, and avoid spraying in stressful conditions like hot, windy days.