PATH – 365

PATH – 365: DISEASES OF FIELD AND HORTICULTURAL CROPS AND THEIR MANAGEMENT – II

Credit:3(2+1)

THEORY:

Symptoms, etiology, disease cycle and management of following diseases:

Field Crops:Wheat: rusts, loose smut, karnal bunt, powdery mildew, alternaria blight, and ear cockle;Sugarcane: red rot, smut, wilt, grassy shoot, ratoon stunting and Pokkah Boeng;Sunflower: Sclerotinia stem rot and Alternaria blight; Rust, Downy mildewMustard: Alternaria blight, white rust, downy mildew and Sclerotinia stem rot;Gram: wilt, grey mould and Ascochyta blight;Lentil: rust and wilt;Cotton: anthracnose, vascular wilt, and black arm;Pea: downy mildew, powdery mildew and rust

Horticultural Crops:Mango: anthracnose, malformation, bacterial blight and powdery mildew;Citrus: canker and gummosis,Grape vine: downy mildew, Powdery mildew and anthracnose;Apple: scab, powdery mildew, fire blight and crown gall;Peach: leaf curl,Strawberry: leaf spot Potato: early and late blight, black scurf, leaf roll, and mosaic;

Cucurbits: Downy mildew, powdery mildew, wilt;Onion and garlic: purple blotch, and Stemphylium blight;Chillies: anthracnose and fruit rot, wilt and leaf curl;Turmeric: leaf spot, Coriander: stem gall,Marigold: Botrytis blight; Rose: dieback, powdery mildew and black leaf spot.

PRACTICAL:

Identification and histopathological studies of selected diseases of field and horticultural crops covered in theory. Field visit for the diagnosis of field problems.Collection and preservation of plant diseased specimens for herbarium.

Note: Students should submit 50 pressed and well-mounted specimens.

Practical (Experiments):

Field crops

1) Wheat: Rusts, loose smut, Karnal bunt, powdery mildew, Alternaria blight, and ear cockle

2) Sugarcane: Red rot, Smut, Wilt, Grassy shoot, Ratoon stunting and Pokka Boeng

Oilseed

3) Sunflower: Sclerotinia stem rot and Alternaria blight, Rust, Downy mildew

4) Mustard: Alternaria blight, White rust, Downy mildew and Sclerotinia stem rot

Pulses

5) Gram: wilt, grey mould and Ascochyta blight

6) Lentil: rust and wilt

7) Linseed :Alternaria bud blight, Rust ,Powdery mildew

8) Pea: Downy mildew, Powdery mildew and Rust, wilt

Cash Crop

9) Cotton: Root rot, Wilt, Anthracnose, and black arm, Dahiya diseases, leaf curl of cotton, 2-4-D injury

Horticultural Crops

10) Mango: Die back, Anthracnose, Mango-malformation, bacterial blight and powdery mildew, Spongy tissue, Red rust, Pink diseases, Loranthus, Stone graft Mortality, Lime induced chlorosis

11) Citrus : Citrus canker, Gummosis, Fruit rot, Citrus greening, Anthracnose, Tristeza, Citrus Exocortis, Scab of citrus, Mottle leaf of citrus

12) Grape vine: Downy mildew, Powdery mildew, Anthracnose, Bacterial Canker, Grape fan-leaf virus

13) Peach: leaf curl

14) Apple: Scab, Powdery mildew, Fire blight and Crown gall, Mosaic

15) Strawberry: Leaf spot

Vegetables

16) Potato: Early and late blight, black scurf, leaf roll, and Mosaic

17) Cucurbits: Downy mildew, powdery mildew, wilt, Angular leaf spot, Mosaic, TOSPO virus

18) Onion: Purple blotch, and Stemphylium blight, Downy mildew, Smut, Smudge, Erwinia rot

19) Garlic : Neck and bulb rot, and Stemphylium blight, Blemish, Black mould

20) Chilli : Anthracnose and fruit rot, Wilt and leaf curl

21) Coriander : Stem gall, Powdery mildew, Wilt

22) Turmeric: leaf spot

Ornamental Crops

23) Marigold :Botrytis blight, Alternaria blight

24) Rose: Dieback, Powdery mildew and Black leaf spot

25) Field visit for the diagnosis of field problems