10 Questions
What is the causal organism of white rust of mustard?
Albugo candida
What causes the foul smell in the field in the case of Karnal bunt of wheat?
Tetramethylamine
What causes the restriction in the export of wheat from India?
Karnal bunt
What is the survival structure produced by Colletotrichum?
Cleistothecia
What is the primary infection source of downy mildew?
Zoospores
Which fungus causes stem rot in sunflowers?
Sclerotinia sclerotiorum
Yellow rust is also known as:
Stripe rust
What is the perfect stage of Colletotrichum called?
Glomerella
Which disease induces flower abnormalities in mustard plants?
Sclerotinia rot of mustard
Who developed the solar heat treatment of wheat seeds for controlling diseases?
Mundkar
Study Notes
Diseases of Field and Horticultural Crops
- Aecial stage of Puccinia graminis develops on the lower surface of Barberry leaves.
- Necrosis indicates the death of cells.
Wheat Diseases
- Karnal bunt of wheat causes a foul smell in the field due to the presence of volatile compounds, specifically tetramethylamine.
- Karnal bunt of wheat restricts the export of wheat from India.
- Yellow rust is also known as Stripe rust.
Fungal Diseases
- Macro and micro conidia are produced by the fungus Colletotrichum.
- Basidiospores of smut fungi are known as Sporidia.
- Chlamydospores are the survival structures produced by Fusarium.
- Cleistothecia are the survival structures produced by Erysiphe.
- Fruiting structure apothecia are produced by the fungus Sclerotinia.
Sugarcane Diseases
- Red rot of sugarcane is caused by Colletotrichum falcatum.
- Ustilago scitaminea causes Whip Smut disease in sugarcane.
Other Crop Diseases
- Black arm of cotton is caused by Xanthomonas axonopodis.
- Stem rot of sunflower is caused by Sclerotinia sclerotiorum.
- White rust of mustard is caused by Albugo candida.
Disease Management
- Luthra and Sattar developed the solar heat treatment of wheat seeds for the control of Loose smut.
- Karnal bunt of wheat was first reported by Mitra.
Test your knowledge on diseases affecting field and horticultural crops, focusing on their management. Questions cover topics such as identifying plant diseases, their symptoms, and appropriate management strategies.
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