Course Content
Horticulture
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UPCATET PG / M. Sc. Agriculture
Important Vegetable Crop Diseases with Their Causal Organisms

Potato (Solanum tuberosum)

Disease

Causal Organism

Late Blight

Phytophthora infestans

Early Blight

Alternaria solani

Black Scurf

Rhizoctonia solani

Common Scab

Streptomyces scabies

Wart Disease

Synchytrium endobioticum

Bacterial Wilt

Ralstonia solanacearum

Soft Rot

Erwinia carotovora

Leaf Roll

Potato leaf roll virus (PLRV)

Mosaic

Potato virus X (PVX) & Potato virus Y (PVY)

 

Tomato (Solanum lycopersicum)

Disease

Causal Organism

Early Blight

Alternaria solani

Late Blight

Phytophthora infestans

Wilt

Fusarium oxysporum f.sp. lycopersici

Bacterial Wilt

Ralstonia solanacearum

Damping Off

Pythium debaryanum

Leaf Curl

Tomato leaf curl virus (TLCV) – transmitted by Bemisia tabaci

Mosaic

Tobacco mosaic virus (TMV)

Root Knot

Meloidogyne incognita

Septoria Leaf Spot

Septoria lycopersici

 

Brinjal (Eggplant / Solanum melongena)

Disease

Causal Organism

Wilt

Fusarium oxysporum f.sp. melongenae

Bacterial Wilt

Ralstonia solanacearum

Phomopsis Blight

Phomopsis vexans

Little Leaf

Phytoplasma (transmitted by Hishimonus phycitis)

Cercospora Leaf Spot

Cercospora melongenae

Damping Off

Pythium debaryanum

 

Chilli (Capsicum annuum)

Disease

Causal Organism

Anthracnose / Fruit Rot

Colletotrichum capsici

Leaf Curl

Chilli leaf curl virus (transmitted by Bemisia tabaci)

Damping Off

Pythium aphanidermatum

Cercospora Leaf Spot

Cercospora capsici

Bacterial Leaf Spot

Xanthomonas campestris pv. vesicatoria

Mosaic

Chilli mosaic virus

Powdery Mildew

Leveillula taurica

 

Cucumber and Other Cucurbits (Cucurbitaceae family)

Disease

Causal Organism

Downy Mildew

Pseudoperonospora cubensis

Powdery Mildew

Erysiphe cichoracearum / Sphaerotheca fuliginea

Angular Leaf Spot

Pseudomonas syringae pv. lachrymans

Fruit Rot / Anthracnose

Colletotrichum lagenarium

Fusarium Wilt

Fusarium oxysporum f.sp. cucumerinum

Mosaic

Cucumber mosaic virus (CMV)

Bottle Gourd Wilt

Fusarium oxysporum f.sp. lagenariae

Phyllody (Bitter Gourd)

Phytoplasma

 

Okra / Bhindi (Abelmoschus esculentus)

Disease

Causal Organism

Yellow Vein Mosaic

Okra yellow vein mosaic virus (transmitted by Bemisia tabaci)

Wilt

Fusarium oxysporum f.sp. vasinfectum

Cercospora Leaf Spot

Cercospora abelmoschi

Powdery Mildew

Erysiphe cichoracearum

Damping Off

Pythium debaryanum

Enation Leaf Curl

Enation leaf curl virus

 

Onion (Allium cepa)

Disease

Causal Organism

Purple Blotch

Alternaria porri

Stemphylium Blight

Stemphylium vesicarium

Downy Mildew

Peronospora destructor

Smut

Urocystis cepulae

Bacterial Soft Rot

Erwinia carotovora

Neck Rot

Botrytis allii

 

Carrot (Daucus carota)

Disease

Causal Organism

Alternaria Leaf Blight

Alternaria dauci

Powdery Mildew

Erysiphe polygoni

Soft Rot

Erwinia carotovora

Root Knot Nematode

Meloidogyne incognita

 

Cabbage & Cauliflower (Brassica oleracea group)

Disease

Causal Organism

Black Rot

Xanthomonas campestris pv. campestris

Alternaria Leaf Spot

Alternaria brassicae

Downy Mildew

Peronospora parasitica

Club Root

Plasmodiophora brassicae

Damping Off

Pythium debaryanum

Soft Rot

Erwinia carotovora

 

Garlic (Allium sativum)

Disease

Causal Organism

Purple Blotch

Alternaria porri

Downy Mildew

Peronospora destructor

Fusarium Basal Rot

Fusarium oxysporum f.sp. cepae

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