Plant Pathology Short Notes - Diseases and Causative Organism


PLANT PATHOLOGY Quick revision Notes

·         False smut of paddy - Ustilaginoidea virens
·         Blight of paddy is caused by Xanthomonas oryzae
·         Spodoptera mauritia is a pest of Paddy
·         The ‘army worm’ which attack paddy is the larvae of Spodoptera mauritia
·         Ustilaginoidea sp. - False smut of Paddy
·         Cosmopolites sordidus is the pest of Banana
·         Citrus canker (Xanthomonas axonopodis pv citri)
·         Red rust of tea -Cephaleuros parasiticus
·         Red rust of tea: caused by an alga
·         Coffee rust -hemileia vastatrix fungus.
·         Yellow vein mosaic of ladies finger – Begomovirus
·         Late blight of Potato – Phytophthora infestans
·         Red rot of Sugarcane – Colletorichum
·         Quick wilt of pepper - Phytophthora capsici
·         Coffee rust -Hemileia vastatrix
·         Pink disease of rubber is caused by Corticium salmonicolor
·         Powdery mildew of rubber -Oidium heveae
·         Late blight of potato -Phytophthora infestans
·         Alternaria - Early blight of potato
·         Ustilago -  Loose smut of wheat
·         Peronosporales - Downy mildews
·         Hemileia sp. -Coffee rust
·         Oidium sp- Powdery mildew of Rubber
·         Bengal famine was caused by Helminthosporium oryzae

·Symptoms of Leaf spot of Mango are water-soaked, irregular, black lesions surrounded by chlorotic halos. Due to vein limitations, the spots become angular and result in cankerous, rough, necrotic, raised lesions. Name the causative: Xanthomonas campestris

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