A soil invertebrate is an invertebrate that spends all or much of its life in the soil. Many soil invertebrates improve the health of the soil and therefore plants; however, some soil invertebrates may be detrimental. Harmful fungi and bacteria may feed on roots and leaves of live plants.
Some nematodes may carry pathogens or parasitize plants and may destroy good soil bacteria. Remedial measures may be taken to promote beneficial organisms, thereby inhibiting the growth of destructive soil organisms.…