Type of Biofertilizers

1. Type of Biofertilizers Biofertilizers can be defined as organisms, mainly bacteria, fungi, and algae, that increase the supply of essential nutrients in the soil that can be readily used by host plants to promote plant growth. Biofertilizer organisms must consist of specific strains of microorganisms such as bacteria, fungi, algae, or combinations thereof. Types of biofertilizer Organic fertilisers are divided into different categories depending on the type of microorganisms involved. 1. Bacterial organic fertiliser Bacteria that promote soil fertility can be symbiotic, non-symbiotic (free-living), or loosely associated with the roots of higher plants. They supplement the soil by converting free nitrogen into nitrogen compounds such as ammonia, nitric acid, and organic nitrates. For example, Rhizobium, Azospirillum, Azotobacter, and Phosphobacteria. Many cyanobacteria have the ability to fix nitrogen. B. Anabaena, Nostoc, Aulosira, etc. Actinomycetes are bacteria known to produce multiple plant growth-promoting molecules and to combat plant diseases by secreting multiple compounds such as secondary metabolites. Therefore, they are known to be suitable for improving agricultural productivity - e.g. Francia. 2. Organic fertiliser for mushrooms Trichoderma and mycorrhizal fungi are interrelated with plants. Fungal biofertilizers play an important role in supporting plant growth, health, and productivity and improving soil fertility. 3. Organic fertiliser from algae Blue-green algae (BGA) and Azolla are algal biofertilizers widely used in organic agriculture. Biofertilizers are mostly grown and propagated in laboratories. In this way, cultured microorganisms are packaged in a carrier to make it easier to use on-site, and this is called biofertilizer. However, blue-green algae and Azolla are organisms that can reproduce in large numbers outdoors.