In Asia, particularly in India, it was introduced by Portuguese in 17th century. The Potato was originated in the hills of Andes and Bolivia in South America, subsequently it was introduced into Europe by Spaniards in the second half of the 16th century, from there it spread throughout Europe and rest of the world in the mid 17th to mid of 18th century. Nowadays biological control is gaining importance due to its eco-friendly in nature. Several fungicides including contact, systemic and translaminar have been evaluated from time to time however, the pathogen has shown a remarkable capacity for change with respect to host genotype and fungicides. infestans the resistance of the varieties is wiped out within a decade. However, due to very divers’ virulence nature of P. The host resistance is best option for management of this disease. The cultural practices will also helpful in reducing inoculum load and managing the disease. As infected potato tubers cause the primary sources of infection in next season. Forecasting is the better option for management of late blight, if accurately forecasted and promptly information reaches to the end users. Management strategies includes forecasting, cultural, biological, varietal and chemical management. The factors which are responsible for huge yield loss of potato are applied improper management strategies and pathogen behavior. Moreover, this disease is re-emerging in the forms of different genotypes and causes huge yield loss in the potato crop. Potato (Solanum tuberosum L.) is the most important crop and Phytophthora infestans (Mont.) de Bary is the oomycete, which was responsible for infamous Irish potato famine during 1843–45 and it continues to cause worldwide devastation of the potato.

Early and late blight of potato