Causal Agent:
Oomycete(Pythium spp.)
| Characteristic Symptoms: | |
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The pathogens cause reduced or poor germination of seedlings. |
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Occurs in nursery beds; the part of the stem near the soil surface turns brown, becomes water-soaked, soft and slender and then collapses. |
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Roots of affected seedlings are brown and rotten. |
| Crops Affected | |
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All crops may be affected usually at seedling or early vegetative stage.
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| Management and Control: | |
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Drench nursery beds with captan fungicide.
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Remove heavily infected tomato/potato plants from the field.
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Clean thoroughly seedling trays and pots and soak in 10% chlorox.
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Avoid over watering or excessive moisture.
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Expose beds to solar radiation to minimize fungal population.
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Drench chemical fungicides like promocarb hydrochloride (e.g. ProplantⓇ, PrevicureⓇ) or fosetyl aluminum (e.g. AlietteⓇ), metalaxyl+mancozeb (e.g. Ridomil Gold MZ 68 WGⓇ, Apron XL 350 ESⓇ), mancozeb (e.g. Attain M-80Ⓡ, Achem Mancozeb 80 WPⓇ, Micron 80 WOⓇ, VanzebⓇ) before symptoms develop. |
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