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Root-Knot Nematodes: signs and treatment in Jamaica
Microscopic roundworms that infect roots, cutting off water and nutrient uptake. PlantArmor's crop guides list root-knot nematodes as a common problem on carrot, ginger, irish potato and yam (yellow/lucca).
Signs to look for
- Severe stunting and daytime wilting
- Yellowing resembling nutrient deficiency
- Distinctive swollen galls or knots on the roots
What to do
Crops it affects
Carrot
Full carrot guide: 4 common problems, soil pH and feeding by stage
Ginger
Full ginger guide: 3 common problems, soil pH and feeding by stage
Irish Potato
Full irish potato guide: 4 common problems, soil pH and feeding by stage
Yam (Yellow/Lucca)
Full yam (yellow/lucca) guide: 4 common problems, soil pH and feeding by stage
Questions growers ask
How do I recognise root-knot nematodes?
Microscopic roundworms that infect roots, cutting off water and nutrient uptake. The signs to look for: Severe stunting and daytime wilting. Yellowing resembling nutrient deficiency. Distinctive swollen galls or knots on the roots.
What should I do about root-knot nematodes?
Use resistant varieties. Solarize soil before planting. Apply nematicides (e.g., Vydate) if heavily infested. Always read the product label and observe the registered rate, re-entry period and pre-harvest interval before you apply any pesticide.
Which crops are affected by root-knot nematodes in Jamaica?
PlantArmor's crop guides list root-knot nematodes as a common problem on carrot, ginger, irish potato and yam (yellow/lucca).
Check it in the field
PlantArmor's reference library works offline, so you can compare what you are seeing against it standing in the plot, then log the spray you use along with its re-entry and pre-harvest intervals. Free to use.
This description and treatment come from the same reference library the PlantArmor app uses in the field. Pesticide registrations and permitted uses change — always read the current product label and observe the stated rate, re-entry period and pre-harvest interval.