Which statement is true?

Which statement is true?

• A. Different diseases and insects can cause the same symptoms.
• B. All pests have unique symptoms.
• C. Symptoms do not help identify problems.
• D. Insects always present obvious signs.

Answer: (A)

Symptoms seen on turf can be non-specific and overlap across different problems. That means the same signs, like yellowing, thinning, or brown patches, can be caused by more than one pest or disease, as well as by environmental stresses such as drought or nutrient deficiencies. Because of this overlap, the statement is true: different diseases and insects can produce the same symptoms. In the field, this is why you don’t diagnose based on symptoms alone. You gather additional clues—look for signs of pests (presence of insects, larvae, or feeding damage), signs of disease (fungal growth, lesions, or spores), and consider recent weather, irrigation, and cultural practices. Sampling and, if needed, diagnostic testing help confirm the actual cause. Other statements don’t fit because not all pests have unique symptoms, and symptoms do not always clearly identify the problem on their own. Insects do not always show obvious signs, and diseases or signs of damage can be subtle or hidden.

Symptoms seen on turf can be non-specific and overlap across different problems. That means the same signs, like yellowing, thinning, or brown patches, can be caused by more than one pest or disease, as well as by environmental stresses such as drought or nutrient deficiencies. Because of this overlap, the statement is true: different diseases and insects can produce the same symptoms.

In the field, this is why you don’t diagnose based on symptoms alone. You gather additional clues—look for signs of pests (presence of insects, larvae, or feeding damage), signs of disease (fungal growth, lesions, or spores), and consider recent weather, irrigation, and cultural practices. Sampling and, if needed, diagnostic testing help confirm the actual cause.

Other statements don’t fit because not all pests have unique symptoms, and symptoms do not always clearly identify the problem on their own. Insects do not always show obvious signs, and diseases or signs of damage can be subtle or hidden.