[table] Causing Organism | Diseases ; $Phytophthora\$ $infestans$ | Late blight of potato ; $Gibberella$ $\ fujikuroi$ | Foolish seedling disease of rice ; $Cercospora$ $\ personata$ | Tikka disease of groundnut ; $Agrobacterium\$ $tumefaciens$ | Crown gall disease of grapes [/table]