by: Kanika SohaneyPosted on: 01/02/201825/09/2018 Potato diseases and their management Major Potato diseases are:- S.No. Diseases 1. Late blight of potato: Phytopthora infestans 2. Early blight: Alternaria solani 3. Post-harvest tuber rots: Sclerotium rolfsii 4. Black scurf: Rhizoctonia solani 5. Common scab or corkey scab: Streptomyces scabies 6. Brown rot or Bangle blight: Ralstonia solanacearum 7. Bacterial Soft rot: Erwinia carotovora subsp caratovora Source- TamilNadu Agritech Portal