Azolla
Azolla Azolla is a genus under plant kingdom consisting of seven species of aquatic fern belonging to the family Salviniaceae . Azolla is the genus of aquatic ferns but they look nothing like a typical fern due to their extremely reduced form. They are free-floating fern that lives in symbiotic association with Nitrogen fixing blue-green algae that has the potential to produce 50-60 kg/ nitrogen per hectare under suitable conditions. Not just adding nitrogen but being bulky they add organic matter to the soil thus improving the soil structure. They are very productive and can produce biomass by two folds in 2-3 days. Azolla has once considered has invasive weed but after realising its benefits they are fondly cultivated by farmers. Azolla is one of the most commonly used bio-fertilizer by farmers as they are easy to cultivate in the field. Azolla is not only used as a bio-fertilizer but they are also loved by poultry and cattle as feed. Azolla is rich in pro...