Azolla is an aquatic fern that lives in symbiosis with the nitrogen-fixing cyanobacterium Anabaena azollae. This complex fixes atmospheric nitrogen, which is released into the soil upon the decomposition of Azolla. This makes it an excellent bio- fertilizer, particularly suitable for crops grown in flooded conditions where Azolla thrives naturally, such as paddy fields.
Azolla-Anabaena Bio-fertilizer is used for crop:
Asked in RPSC RAS Prelims 2008 · Topic: Biofertilizers (Nitrogen-fixing Biofertilizers: Non-symbiotic/Free-living (e.g., Azotobacter, Azospirillum, Cyanobacteria/BGA))
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