Root knot nematode

What are Root knot nematode?

Nematodes are also known as ‘Eel worms’ and they’re colourless, microscopic worm-like animals.

Most nematodes are harmless to plants, and some are even beneficial.

But the Root Knot Nematode is a plant parasite.

What do Root Knot Nematode damage?

These microscopic pests enter the roots, especially of tomatoes, potatoes, beans, carrots, wheat, grapevines, and ornamentals, secreting their saliva as they feed on the roots.

The saliva causes rotting, abnormal cell enlargement and multiplication (like galls), abnormal cell division that results in an excessive number of lateral roots, and general stunting. 

Where can I find Root knot nematode?

They love sandy soils and warm weather. As they live underground, they are hard to spot but the evidence is seen as slow-growing, stunted plants with pale green or yellow leaves.

How to deter Root knot nematode?

To deter root knot nematodes:

• plant French marigolds and asparagus
• resistant plant varieties, crop rotation, regular watering, compost, and mulch.
• A rich organic soil will encourage beneficial nematodes which attack the pest species.
• Destroy infected crops (bag & bin) and don’t plant the same crops, or susceptible crops in the same area each season.
• Resistant crops include some grasses, cabbage, cauliflower, sweet corn, and onions.
• Sowing mustard seed as a green manure will help fumigate the soil, helping to control nematodes.