Agronomy Degree Practice Exam

Which wheat disease is spread by the wheat curl mite?

1. Barley yellow dwarf

2. Wheat streak mosaic virus

3. Loose smut

4. Tan spot

The correct answer is: Wheat streak mosaic virus

The disease spread by the wheat curl mite is the wheat streak mosaic virus. This specific virus is transmitted primarily through the feeding activities of the wheat curl mite, which serves as a vector. When these mites feed on infected plants, they acquire the virus, which can then be transmitted to healthy plants during subsequent feeding. Wheat streak mosaic virus is characterized by mottled or streaked leaves, stunted growth, and can lead to significant yield loss if not managed properly. The relationship between the wheat curl mite and the virus emphasizes the importance of integrated pest management strategies to control both the mite and the disease it transmits. Understanding this connection is crucial for effective management and prevention of the disease in wheat crops.