Hostname: page-component-848d4c4894-x5gtn Total loading time: 0 Render date: 2024-05-19T15:26:44.553Z Has data issue: false hasContentIssue false
  • English
  • Français

Optimum sowing date and nitrogen fertilizer rate for rice varieties under intermediate deepwater conditions (15–50 cm)

Published online by Cambridge University Press:  27 March 2009

A. R. Sharma  and
M. D. Reddy
A. R. Sharma
Affiliation:
Division of Agronomy, Central Rice Research Institute, Cuttack 753006, India
M. D. Reddy
Affiliation:
Division of Agronomy, Central Rice Research Institute, Cuttack 753006, India
Get access Rights & Permissions [Opens in a new window]

Summary

In an intermediate deepwater situation (15–50 cm) at Cuttack, India, three improved high-yielding rice varieties, Utkalprabha (semi-tall), CR 292–8051 (intermediate tall) and Gayatri (semi-dwarf) were sown on 20 May, 30 May and 10 June in 1988 and 1989 with an application of either 0, 20 or 40 kg N/ha at sowing. Tall varieties performed better than the dwarf type but grain yield decreased with delay in sowing. The early-sown crops (20–30 May) germinated with pre-monsoon rains and were established well before water accumulated in the field from mid-June onwards. The late-sown crops (10 June), despite good initial germination, could not withstand immediate waterlogging. The tall variety, Utkalprabha, elongated faster with rising water level and escaped complete submergence; whereas the semi-dwarf Gayatri failed to withstand such extreme excess water stress. Application of N fertilizer up to 40 kg/ha proved beneficial to the crops sown by the end of May. However, with crops sown on 10 June, the application of N could not compensate for the loss in yield due to an inadequate initial crop stand. Therefore, early sowing of tall varieties by the end of May along with a basal application of N fertilizer is recommended for higher productivity of rice under excess water conditions.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 118 , Issue 2 , April 1992 , pp. 179 - 183
Copyright
Copyright © Cambridge University Press 1992

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

Ghosh, B. C., Reddy, B. B., Panda, M. M. & Reddy, M. D. (1987). Response of direct seeded rice to nitrogen under intermediate deepwater conditions. Indian Journal of Agronomy 32, 44–48.Google Scholar
Ghosh, B. C., Reddy, M. D. & Reddy, B. B. (1988). Effect of seedling density on growth and yield of transplanted rice in an intermediate deepwater situation (15–50 cm). Thai Journal of Agricultural Science 21, 13–21.Google Scholar
Jha, K. P. & Gangadharan, C. (1989). Technology for improving and stabilizing rice yield in rainfed lowlands of Orissa. Farming Systems Research Newsletter 3(3), 11–15.Google Scholar
Rao, M. V., Reddy, B. B., Ghosh, B. C. & Panda, M. M. (1985). Nitrogen management in direct sown intermediate deepwater rice (15–50 cm). Plant and Soil 83, 243–253.CrossRefGoogle Scholar
Reddy, M. D. & Panda, M. M. (1988). Effect of methods of stand establishment on grain yield of rice under intermediate deepwater conditions (15–50 cm). Journal of Agricultural Science, Cambridge 110, 47–51.CrossRefGoogle Scholar
Reddy, M. D., Ghosh, B. C. & Panda, M. M. (1986). Effect of seed rate and application of N fertilizer on grain yield and N uptake of rice under intermediate deepwater conditions (15–50 cm). Journal of Agricultural Science, Cambridge 107, 61–66.CrossRefGoogle Scholar
Sharma, A. R. & Reddy, M. D. (1991). Growth and yield of rice varieties grown in deepwater. International Rice Research Newsletter 16(1), 8–9.Google Scholar