The biomass formation ofAzolla was greatly enhanced by water of the River Ganga and by prevailing environmental conditions. It increased gradually from January to April (first maximum 2.409 g.m−2.day−1), declined during June (1.185 g.m−2.day−1), and reached a second its maximum during September (2.629 g.m−2.day−1). The biomass formation was related to the nutrient availability in the medium in a particular season (measured were: nitrate-N, available phosphorus, total suspended solids, and conductivity). The average annual production of 6.73 ton.ha−1.yr−1 is equivalent to the average production of 0.025 ton.ha−1.yr−1 phosphorus, 0.252 ton.ha−1.yr−1 nitrogen, and 1.57 ton.ha−1.yr−1 crude protein.
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Taheruzzaman, Q., Kushari, D.P. The effect of sewage-enriched river Ganga water on the biomass production of theAzolla-Anabaena complex. Hydrobiological Bulletin 22, 173–181 (1988). https://doi.org/10.1007/BF02256821
- enriched water
- Ganga river