Potato scab, caused by Streptomyces spp., poses a significant threat to global potato production, including in Taiwan where cultivation began in 1914. Although historically rare in the region, the disease has increasingly been problematic, particularly after a severe outbreak in 1995. This review synthesizes research on the etiology, transmission, and management of potato scab, highlighting its detrimental effects on yield and quality. Streptomyces spp., the primary pathogens persist in soil and infect tubers primarily through wounds or lenticels. Environmental factors such as moisture and pH play a critical role in disease severity. Preventive strategies including soil flooding, crop rotation with rice, and the use of certified seed potatoes have proven effective. Additionally, advancements in biological control, such as the application of Bacillus subtilis LNP-1, showing promising potential for sustainable management. Integrating these strategies into potato production management can mitigate the impact of potato scab, ensuring yields and quality.
Keywords: Streptomyces spp., soil moisture, crop rotation, rice, healthy seed potatoes, Taiwan
Potato scab, caused by Streptomyces spp., poses a significant threat to global potato production, including in Taiwan where cultivation began in 1914. Although historically rare in the region, the disease has increasingly been problematic, particularly after a severe outbreak in 1995. This review synthesizes research on the etiology, transmission, and management of potato scab, highlighting its detrimental effects on yield and quality. Streptomyces spp., the primary pathogens persist in soil and infect tubers primarily through wounds or lenticels. Environmental factors such as moisture and pH play a critical role in disease severity. Preventive strategies including soil flooding, crop rotation with rice, and the use of certified seed potatoes have proven effective. Additionally, advancements in biological control, such as the application of Bacillus subtilis LNP-1, showing promising potential for sustainable management. Integrating these strategies into potato production management can mitigate the impact of potato scab, ensuring yields and quality.
Keywords: Streptomyces spp., soil moisture, crop rotation, rice, healthy seed potatoes, Taiwan