Root Crops
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Yam leaf beetle
Beetles and their grubs chew holes in the leaves and eat the vine tips, and heavy attacks leave the vines bare.
Crops it attacks
Where the damage shows
On the leaves
When to act
Check the young vines twice a week for beetles and for grubs hidden under their own wet droppings. Pick them off whenever you see them. The vines are most at risk in the first 2 months.
Before you spray
No product names this beetle on its label. Pick off beetles and grubs by hand while the vines are young, and keep the field free of weeds.
How to prevent it
- Pick off beetles and grubs by hand while the vines are young, and crush the egg clusters under the leaves.
- Keep the field and its edges free of weeds and wild yam vines.
- Remove and burn old vines after harvest, where beetles shelter.
- Do not plant ubi after ubi in the same field.
Natural enemies and biological help
- Spiders, ants, assassin bugs and birds eat the grubs. Leave them unsprayed.
Where this comes from
Not sure it is this one?
Many pests 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.