DIRECTIONS FOR USE
Nematodes are parasites which attack the roots of plants.
Fish emulsion and PRODUCT X work together to reduce their effective activity in soils and roots. Therefore, a mixture of fish emulsion and PRODUCT X should be applied to the ground where the plant root system is and the material watered in to move it down to the root zone.
Alternatively, the material may be applied to the ground before planting and worked into the soil.
This information is extracted from the label distributed with a plant derived product which is thought to be more effective when used in combination with fish emulsion or other oils.
Although it doesn't claim to control nematodes, it indicates their effective activity will be reduced.