Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-05T12:03:45.819Z Has data issue: false hasContentIssue false
  • English
  • Français

A Comparison of the Use of Azolla and Blue-green Algal Bio-fertilizers with Green Manuring, Organic Manuring and Urea in Transplanted and Direct-seeded Rice

Published online by Cambridge University Press:  03 October 2008

A. L. Singh  and
P. K. Singh
A. L. Singh
Affiliation:
Central Rice Research Institute, Cuttack 753 006, India
P. K. Singh
Affiliation:
Central Rice Research Institute, Cuttack 753 006, India
Get access Rights & Permissions [Opens in a new window]

Summary

Azolla and blue-green algae (BGA) inoculated in a rice field produced a higher biomass and fixed more nitrogen in transplanted than in direct-seeded rice. Application of Azolla, BGA, composts of Eichhomia and Azolla and green manuring with Sesbania increased tiller numbers, height, grain and straw yields, and nitrogen uptake by rice in both the transplanted and the direct-seeded crop. The growing and incorporating of three Azolla crops with the rice crop produced more grain than the use of other nitrogen sources but the rice crops showed a poor response to inoculation with BGA. The yield of rice following green manuring with Sesbania or the use of two crops of Azolla after transplanting was similar to that of a crop receiving 60 kg N ha−1 as urea, but smaller yields resulted from the use of composts of Azolla and Eichhornia.

Type
Research Article
Information
Experimental Agriculture , Volume 25 , Issue 4 , October 1989 , pp. 485 - 491
Copyright
Copyright © Cambridge University Press 1989

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Jackson, M. L. (1967). Soil Chemical Analysis. New Delhi, India: Prentice Hall of India.Google Scholar
Liu, C. C. (1979). Use of Azolla in rice production in China. In Nitrogen and Rice, 375–394. Los Banos, Philippines: International Rice Research Institute.Google Scholar
Rao, C. N. & Murty, K. S. (1975). Effect of split application of nitrogen on tiller survival and yield in direct-seeded upland rice. Indian Journal of Agricultural Science 45:183–188.Google Scholar
Roger, P. A. & Kulasooriya, S. A. (1980). Blue-green Algae and Rice. Los Banos, Philippines: International Rice Research Institute.Google Scholar
Singh, A. L. & Singh, P. K. (1986a). Comparative studies on different methods of Azolla utilization in rice culture. Journal of Agricultural Science, Cambridge 107:273–278.CrossRefGoogle Scholar
Singh, A. L. & Singh, P. K. (1986b). Comparative effects of Azolla and blue-green algae in combination with chemical N fertilizer on rice crop. Proceedings of the Indian Academy of Science (Plant Science) 96:147–152.Google Scholar
Singh, A. L. & Singh, P. K. (1987a). Use of Azolla pinnata isolates as organic nitrogen sources for lowland rice (Oryza sativa). Experimental Agriculture 23:159–166.CrossRefGoogle Scholar
Singh, A. L. & Singh, P. K. (1987b). Influence of Azolla management on the growth, yield of rice and soil fertility. II N and P contents of plant and soil. Plant and Soil 102:49–54.CrossRefGoogle Scholar
Watanabe, I. (1984). Use of symbiotic and free living blue green algae in rice culture. Outlook on Agriculture 13:166–172.CrossRefGoogle Scholar
Watanabe, I., Espinas, C. R., Berja, N. S. & Alimagno, B. V. (1977). Utilization of Azolla anabaena complex as a nitrogen fertilizer for rice. International Rice Research Paper Series 11:1–5.Google Scholar