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