Hostname: page-component-5c6d5d7d68-wtssw Total loading time: 0 Render date: 2024-08-18T11:01:36.777Z Has data issue: false hasContentIssue false
  • English
  • Français

Management of fertilizer nitrogen for direct-sown, rainfed lowland rice (Oryza sativa L.)

Published online by Cambridge University Press:  27 March 2009

D. Panda ,
R. N. Samantaray  and
S. Patnaik
D. Panda
Affiliation:
Central Rice Research Institute, Cuttack-753006, India
R. N. Samantaray
Affiliation:
Central Rice Research Institute, Cuttack-753006, India
S. Patnaik
Affiliation:
Central Rice Research Institute, Cuttack-753006, India
Get access Rights & Permissions [Opens in a new window]

Summary

Field experiments were conducted in wet seasons (June-December) for 4 years on a clay loam Haplaquept, to study the effects of different N management practices on yield, urea and ammonium-N in flood water and N nutrition of an clite rice cv. CR 1009, grown in rainfed lowlands. During the first 3 years of the experiment, fertilizer management practices like band placement of neem-cake-coated urea (NCU), broadcast application of sulphur-coated urea (SCU) at sowing, or point placement of urea supergranules (USG) 3 weeks after germination at 40 kg N/ha gave grain yields of 3·1–3·4 t·ha, which were almost equal to that of split application of prilled urea (PU). In the 4th year of the experiment, besides NCU and USG, single dose applications of PU as band placement, incorporation in the soil at sowing or broadcast incorporation of soil-treated urea at early tillering was also found to have similar effect on grain yield and N uptake as split application of PU. The flood water of the treatment receiving broadcast application of PU at tillering contained some urea and ammonium N, which rapidly decreased to negligible amounts in 3·4 days.

The results suggest that, depending upon the feasibility, any one of the single dose application methods at sowing time or 3 weeks after germination may be adopted in this system of rice culture, which avoids top-dressing of PU to surface flowing flood water of greater depths at later stages of crop growth.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 110 , Issue 3 , June 1988 , pp. 475 - 479
Copyright
Copyright © Cambridge University Press 1988

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

Craswell, E. T. & De Datta, S. K. (1980). Recent developments on research on nitrogen fertilizes for rice. International Rice Research Institute Research Paper Series, no. 49, 11 pp.Google Scholar
De Datta, S. K. & Gomez, K. A. (1980). Interpretative analysis of the international trials on nitrogen fertilizer efficiency in wetland rice. Paper presented during Nitrogen Workshop of the International Soil Fertility and Fertilizer Evaluation for Rice, Cuttack, India, 09 8–9 1980.Google Scholar
Douglas, L. A. & Bremner, J. M. (1970). Extraction and colourimetric determination of urea in soils. Soil Science Society of America, Proceedings 34, 859–862.Google Scholar
International Rice Research Institute (1977). Annual Report for 1976.Google Scholar
Jackson, M. L. (1967). Soil Chemical Analysis. New Delhi: Prentice Hall of India.Google Scholar
Kubota, M. & Takayanagi, H. (1984). Decomposition process of rice straw incorporated into heavy clayey paddy fields in the Hokuriku district. Japanese Journal of Soil Science and Plant Nutrition 55, 36–42.Google Scholar
Patnaik, S. & Nanda, B. B. (1967). Hydrolysis of urea in different soil types. Oryza 4, 78–79.Google Scholar
Patnaik, S. & Rao, M. V. (1979). Sources of nitrogen for rice production. In Nitrogen and Rice, pp. 25–43. Philippines: International Rice Research Institute.Google Scholar
Patnaik, S., Rao, M. V. & Nanda, B. B. (1971). Some considerations on the technique of evaluating nitrogen responsiveness of rice varieties independent of soil. Proceedings of the International Symposium on Soil Fertility Evaluation, 1, pp. 679–685.Google Scholar
Prasad, R. (1975). Research on nitrification inhibitors and slow release nitrogen fertilizers in India - Prospects for their use and problems. In Proceedings of FAI-FAO Seminar on Optimising Agricultural Production under Limited Availability of Fertilizers, pp. 167–185, New Delhi: Fertilizer Association of India.Google Scholar