References

1. Whitton BA and Potts M. Soils and rice fields. In: B.A.Whitton and M. Potts (Eds.), The ecology of cyanobacteria. Dordrecht, The Netherlands: Kluwer Academic Publishers, 2000, 233-255.
2. Fritsch FE. The Structure and Reproduction of the Algae, 1938.
3. Kaushik BD. Algalization of rice in salt-affected soils. Ann. Agric. Res, 1994, 14:105–106
4. Venkataraman GS. Blue-green algae (Cyanobacteria). In: Tata SN, 1993.
5. Mandal B, Vlek PLG, Mandal LN, Beneficial effect of blue green algae and Azolla excluding supplying nitrogen, on wetland rice fields: a review. Biol Fertil Soils, 1998, 27:329–342.
6. Mishra U and Pabbi S. Cyanobacteria: a potential biofertilizer for rice. Resonance, 2004, 6–10.
7. Kumari N, Srivastava AK, Bhargava P, Rai LC. Molecular approaches towards assessment of cyanobacterial biodiversity. Afr. J. Biotechnol. 2009, 8, 4284-4298.
8. Krishnamurthy V. Algae of India and Neighboring Countries; 1 Chlorophycota, Oxford & IBH, New Delhi, India, 2000.
9. Das DR, Haque MR, Choudury BBP, Haque MA, Alam MN, Study on monthly variations of plankton in relation to the physico-chemical condition of rice-fish fields in boro season. Int J Sustain Crop Prod, 2011, 6(1), 43-49.
10. Myers N, Mittermeier RA, Mittermeier CG, da Fonseca GAB and Kent J. Biodiversity hotspots for conservation priorities. Nature, New Delhi 2000, 403, 853-858.
11. Hazarika D, Gogoi P and Boissay CL, Few species of Anabaena Bory from Assam, India. Advanced Journal of Plant Science, 1990, 3(1), 151-152.
12. Yashmin F, Biofertilizer potential and mass production of few BGA (cyanobacteria) sp. of Morigaon district of Assam. (Ph. D thesis).Gauhati University, Guwahati, 2003.
13. Rout J & Borah D. Algal diversity in Chatla wetland in Cachar district (Southern Assam) Assam University Journal of Science & Technology, Biological Sciences. 2009, 4(1): 46-55
14. Dihingia J and Baruah PP. Diversity and distribution of heterocystous nitrogen fixing cyanobacteria in the rice fields of Kamrup, Assam, India. Geophytology. 2011, 42(1), 59-63.
15. Pabbi S, Dutt B, Jadhav SD, Growth and cellular constituents of blue green algae. In: Abraham G, Pabbi S, Dhar DW (eds) Blue Green Algae: A practical Manual. Centre for Conservation and Utilization of Blue Green Algae, IARI, New Delhi, 2010, 18.
16. Desikachary TV. Cyanophyta, Pub. Indian council of Agricultural Research, New Delhi, 1959.
17. Stanier RY, Cohen-Bazire G, Phototrophic prokaryotes, the cyanobacteria. Ann Rev Microbiol, 1977, 31: 225–74
18. Anand N, Morphology, Classification and Taxonomic Studies. In Indian Phyco Rev Cyanophyta, 1993.
19. Black CA, Methods of soil analysis Part 1. American society of Agronomy, USA, 1992.
20. Jackson ML, Soil chemical analysis. Pretice Hall Ind. Pvt. Ltd., New Delhi, 1973, pp. 151-153.
21. Trivedy RK and PK Goel, Chemical and biological methods for water pollution studies. Environmental Publications, Karad, India, 1986, pp 248
22. CE Shannon and V Weaver, The Mathematical Theory of Communication, University of Illinios Press, Urbana, Ill, USA, 1963.
23. Magurran AE, Measuring biological diversity. Blackwell Science Ltd., United States, 2006.
24. CJFT Braak, “Canonical correspondence analysis: a new eigenvector technique formultivariate direct gradient analysis,” Ecology, 1986, 67 (5) pp. 1167–1179.
25. Roger PA, Kulasooriya SA, Blue-green algae and rice. The International Rice Research Institute, Los Banos. Philippines, 1980, pp112.
26. Nayak S and Prasanna R. Soil pH and its role in cyanobacterial abundance and diversity in rice field soils. Applied Ecology and Environmental Research. 2007, 5(2), 103-113.