Causal Agent:
Fungus (Fusarium oxysporum)
Characteristic Symptoms: | |
Affected plants show yellowing, curling of leaves and damping-off
|
|
Affacted plants show basal rotting. | |
Conditions for Disease Development: | |
The fungus enters the bulb through wounds, insect injuries or through root scars at the base. | |
High soil temperature favors disease development. | |
Diseased plants are source of secondary inoculum, which spreads from plant to plant in the field. | |
Management and Control: | |
Use pathogen-free seeds.
|
|
Crop rotation for 4 years or longer if fields are infested.
|
|
Avoid wounding/injuries of roots as this may predispose plants to infection.
|
|
Dip seedlings in fungicide like mancozeb (e.g. Attain M-80Ⓡ, Achem Mancozeb 80 WPⓇ, Micron 80 WOⓇ, VanzebⓇ) before transplanting to minimize infection. |
To view other diseases, click here.
Need more help? Ask the Doctor.