What symptom is most commonly associated with bean common mosaic disease?

Bean common mosaic disease is primarily characterized by the presence of mosaic patterns on the leaves of infected plants. This pattern is a result of the viral infection that causes the plant cells to divide abnormally, leading to a mottled appearance as the virus disrupts normal chlorophyll production. The leaves may show areas of both green and yellow, giving rise to the distinct mosaic look crucial for diagnosis.

In contrast, while wilting of leaves, stunted plant growth, and flower drop can be symptoms related to various plant diseases or stress factors, they are not specific indicators of bean common mosaic disease. Mosaic patterns serve as a hallmark sign, making it the most reliable symptom for identifying this particular viral infection in bean plants. Recognizing these distinctive mosaic patterns allows for better management decisions and control measures to mitigate the spread of the disease.