Hostname: page-component-8448b6f56d-gtxcr Total loading time: 0 Render date: 2024-04-18T05:14:35.368Z Has data issue: false hasContentIssue false
  • English
  • Français

Integrated management of Sesbania, Azolla and urea nitrogen in lowland rice under a rice–wheat cropping system

Published online by Cambridge University Press:  27 March 2009

B. S. Mahapatra  and
G. L. Sharma
B. S. Mahapatra
Affiliation:
G. B. Pant University of Agriculture and Technology, Pantnagar, Nainital-263 145, UP, India
G. L. Sharma
Affiliation:
G. B. Pant University of Agriculture and Technology, Pantnagar, Nainital-263 145, UP, India
Get access Rights & Permissions [Opens in a new window]

Summary

A two-year field experiment on a mollisol at Pantnagar showed that organic sources of N gave generally higher rice yields than the equivalent split dressing of prilled urea (PU). In 1985/86, Sesbania green manuring (40 kg N/ha) and PU (40 kg N/ha) and, in 1986/87, Sesbania (40 kg N/ha) + Azolla (40 kg N/ha) gave significantly higher yields than a split application of 80 kg N/ha as PU. Yield increases were attributed to significant variations in panicles/m2, filled spikelets/panicle and nitrogen uptake by the crop. These components, and grain yield, were significantly correlated with wet soil NH+4-N, which was increased by organic manuring. Wheat grown after each rice crop showed significant residual effects of the different sources of N applied to rice.

Type
Review
Information
The Journal of Agricultural Science , Volume 113 , Issue 2 , October 1989 , pp. 203 - 206
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

Black, C. A. (1971). Methods of Soil Analysis, 2, pp. 1149–1232. Madison, Wisconsin, USA: American Society of Agronomy.Google Scholar
Chakraborty, P. K., Mandal, L. N. & Majumdar, A. (1988). Organic and chemical sources of nitrogen: its effect on nitrogen transformation and rice productivity under submerged conditions. Journal of Agricultural Science, Cambridge 111, 91–94.CrossRefGoogle Scholar
De Datta, S. K. (1987). Advances in soil fertility research and nitrogen fertilizer management for lowland rice. In Efficiency of Nitrogen Fertilizers for Rice, pp. 27–41. Los Baños, Philippines: International Rice Research Institute.Google Scholar
Islam, A. & Islam, A. (1973). Chemistry of submerged soils and growth and yield of rice. I. Benefits from submergence. Plant and Soil 39, 555–565.CrossRefGoogle Scholar
Jackson, M. L. (1973). Soil Chemical Analysis. New Delhi: Prentice Hall of India.Google Scholar
Mahapatra, B. S. (1984) Studies on electro-chemical changes and nitrogen transformation with bio, organic and chemical nitrogen under submerged rice soil and its residual effect on wheat. PhD thesis, G. B. Pant University of Agriculture and Technology, Pantnagar, India.Google Scholar
Mahapatra, B. S., Sharma, K. C. & Sharma, G. L. (1987). Effect of bio-organic sources of nitrogen and chemical nitrogen fertilizers on the yield and its contributing characters in lowland rice. Indian Journal of Agricultural Sciences 57, 634–639.Google Scholar
Meelu, O. P. & Morris, R. A. (1987). Integrated management of green manure, farmyard manure, and inorganic nitrogen fertilizers in rice-based crop sequences. In Efficiency of Nitrogen Fertilizer for Rice, pp. 185–193. Los Baños, Philippines: International Rice Research Institute.Google Scholar
Patnaik, S. & Mandal, L. N. (1982). Chemistry of submerged rice soils. In Review of Soil Research in India. I2th International Congress of Soil Science, New Delhi, 8–16 Feb. 1982, pp. 181–189. Indian Society of Soil Science.Google Scholar
Singh, P. K. (1979). Use of Azolla in rice production in India. In Nitrogen and Rice, pp. 407–418. Los Baños, Philippines: International Rice Research Institute.Google Scholar
Singh, P. K., Panigrahi, B. C. & Satapathy, K. B. (1981). Comparative efficiency of Azolla, blue-green algae and other organic manures in relation to N and P availability of flooded rice soil. Plant and Soil 62, 35–44.CrossRefGoogle Scholar
Snedecor, G. W. & Cochran, W. G. (1967). Statistical Methods. Calcutta: Oxford University Press and India Book House.Google Scholar
Watanabe, I. (1985). Summarized report on Azolla of International Network on Soil Fertility and Fertilizer Evaluation in Rice (INSFFER). First International Workshop on Azolla use, Fuzhou, China, 1–4 April, 1985.Google Scholar