Potato scab is a common disease that affects potato plants, caused by the bacterium Streptomyces scabies. It leads to the formation of rough, corky lesions on the surface of the tubers, which can reduce their market value and make them less appealing for consumption. The disease thrives in dry, alkaline soils and can spread through contaminated seed potatoes. To manage potato scab, farmers can practice crop rotation, use resistant potato varieties, and maintain proper soil pH levels. Good soil management and proper irrigation can also help reduce the incidence of this disease, ensuring healthier potato crops.