Curvularia leaf spot
Small yellow spots on young nursery seedlings turn brown with a yellow ring and join into dry patches, and badly hit seedlings stunt or die.
Crops it strikes
What you see
When to act
Check nursery seedlings every week, above all in the first months. Act when spots show on more than a few seedlings in a bed: cut off the spotted leaves and protect the rest.
What to spray
Active ingredients only, never brands. The FRAC group tells how it works: switch to a different group next time, so the disease does not learn to survive it. Spray only when the damage is worth the cost, and only with products registered with the Fertilizer and Pesticide Authority for your crop. Follow the label. The Shopee and Lazada links only show who sells something with that active ingredient, not a recommendation of any seller or product.
No fungicide for this nursery disease is listed in Philippine guides; space the seedlings, water at the base in the morning, and cut off and burn spotted leaves.
How to prevent it
- Space the polybags so the leaves do not touch and air moves between them.
- Water at the base in the morning, not on the leaves late in the day.
- Cut off and burn spotted leaves, and remove badly hit seedlings.
- Feed the seedlings in balance. Starved or overfed seedlings spot more.
- Use clean, well drained potting soil, and keep grass weeds out of the nursery.
Not sure it is this one?
Many diseases look alike. Send a photo to Anee, the smart farm technician in anee.io. She reads it with your crop, its age and the weather, and tells you what it most likely is and what to do first. In Tagalog or English.