Podcast
Questions and Answers
What is the causal organism of white rust of mustard?
What is the causal organism of white rust of mustard?
- Colletotrichum
- Alternaria brassicae
- Albugo candida (correct)
- Peronospora
What causes the foul smell in the field in the case of Karnal bunt of wheat?
What causes the foul smell in the field in the case of Karnal bunt of wheat?
- Trimethylamine
- Tetramethylamine (correct)
- Diallyl propyl sulphide
- Allyl propyl disulphide
What causes the restriction in the export of wheat from India?
What causes the restriction in the export of wheat from India?
- Yellow rust
- Karnal bunt (correct)
- Flag smut
- Stem rust
What is the survival structure produced by Colletotrichum?
What is the survival structure produced by Colletotrichum?
What is the primary infection source of downy mildew?
What is the primary infection source of downy mildew?
Which fungus causes stem rot in sunflowers?
Which fungus causes stem rot in sunflowers?
Yellow rust is also known as:
Yellow rust is also known as:
What is the perfect stage of Colletotrichum called?
What is the perfect stage of Colletotrichum called?
Which disease induces flower abnormalities in mustard plants?
Which disease induces flower abnormalities in mustard plants?
Who developed the solar heat treatment of wheat seeds for controlling diseases?
Who developed the solar heat treatment of wheat seeds for controlling diseases?
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.
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Description
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.
