Nematode Vs. Earthworm

Nematodes

• There are more nematodes than any other multicellular animals on the planet, according to the University of Nebraska-Lincoln. They feed on plant matter, insects, fungus and sometimes each other. According to the U.S. Department of Agriculture, nematodes are found near their prey. For example, those that eat bacteria congregate near roots where bacteria are found, while those that eat insects are dispersed throughout the soil. It is impossible to detect nematodes without using a microscope.

Earthworms

• Earthworms are much larger than nematodes and are perceptible to the human eye. They live in moist soil but can be found at multiple levels underground. When it rains, you can sometimes see earthworms that have come to the surface.

Benefits

• Earthworms help keep the soil aerated with their tunnels and also convert decaying material into nutrients from plants. Meanwhile, nematodes help curb the populations of insects that can harm your garden. Not all nematodes are beneficial, however. Some eat plant matter and can damage your lawn.