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Black Spot in Sweet Potato
How to identify and treat black spot in Sweet Potato.
potted_plant
Sweet Potato care requirements
water
Moderate; water 1 inch per week; avoid overwatering which promotes vine growth over tubers
soil
Well-draining, slightly acidic soil with pH 5.8–6.2; avoid excessive nitrogen which reduces tuber size
light
Full sun (6–8 hours daily); longer daylight hours promote larger tuber development
symptoms
Symptoms to look for in Sweet Potato
- fiber_manual_recordCircular black spots on rose leaves
- fiber_manual_recordYellow leaf halos
- fiber_manual_recordPremature defoliation
help
Common causes in Sweet Potato
Caused by Diplocarpon rosae. Spreads in wet conditions.
healing
How to treat black spot in Sweet Potato
Remove infected leaves. Apply rose fungicide. Repeat weekly in wet weather.
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Preventing black spot in Sweet Potato
Choose resistant rose varieties. Water at base. Good air circulation.