Which of the following microbes is NOT used as a biofertilizer in agricultural practices?

Step-by-step solution

Biofertilizers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilizers are bacteria, fungi, and cyanobacteria. Azospirillum is a nitrogen-fixing bacterium used as a biofertilizer. Glomus is a fungus that forms mycorrhizal associations with plant roots, helping in the absorption of phosphorus from the soil, acting as a biofertilizer. Nostoc is a cyanobacterium that fixes atmospheric nitrogen and is used as a biofertilizer. Trichoderma is a free-living fungus commonly found in r