Mycorrhizae as biofertilizers are useful inI. Absorbing more phosphorus from the soil II. Fixing the atmospheric nitrogenIII. Protecting the plant from soil borne pathogensIV. Providing tolerance to plant from salinity and drought.

Mycorrhizae are the roots of higher plants associated with fungal mycelia like Glomus. The fungus helps mainly from phosphorus and supplies it to the plant. Being present around the root, it protects the root from other pathogens and pests. It protects the plant form salinity and water stress. It does not fix atmospheric nitrogen.