Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-20T06:33:23.414Z Has data issue: false hasContentIssue false
  • English
  • Français

The effect of time of irrigation on the growth and yield of transplanted rice plants (Oryza sativa L.)

Published online by Cambridge University Press:  27 March 2009

B. A. C. Enyi
B. A. C. Enyi
Affiliation:
College of Agriculture, University of Nigeria, Nsukka
Get access Rights & Permissions [Opens in a new window]

Extract

1. Continuous waterlogging and 4 weeks' waterlogging immediately after transplanting produced plants with higher leaf and shoot numbers.

2. There was no difference in the final shoot number between plants continuously waterlogged and those waterlogged for 4 weeks, immediately and 4 weeks after transplanting. The shoot mortality was higher in the continuously waterlogged plants and those waterlogged for 4 weeks immediately, 8 weeks and 12 weeks after transplanting than in those waterlogged for 4 weeks, 4 weeks after transplanting.

3. Continuously waterlogged plants and those waterlogged for 4 weeks, 4 weeks after transplanting, were taller than those waterlogged for 4 weeks, immediately, 8 weeks and 12 weeks after transplanting.

4. Leaf area per bucket, leaf area per shoot and per leaf lamina were higher in continuously waterlogged plants and those waterlogged for 4 weeks, 4 weeks after transplanting, than in those waterlogged for 4 weeks immediately, 8 weeks, and 12 weeks after transplanting.

5. Continuous waterlogging and waterlogging for 4 weeks, 4 weeks after transplanting, increased the physiological age of the plants as evidenced by earlier ear emergence and grain ripeness.

6. Fresh-weight yield, yield of grain and panicle were greater in continuously waterlogged plants and those waterlogged for 4 weeks, 4 weeks after transplanting, than in those waterlogged for 4 weeks immediately, 8 weeks and 12 weeks after transplanting.

7. The critical period for waterlogging in the cultivation of the rice variety studied is 4 weeks after transplanting and waterlogging applied during this critical period for 4 weeks favours higher yield of grain than when applied for the same period earlier or later than this period. Where water supply is limited the plants should only be waterlogged at this period and the soil kept moist throughout the remaining growing period. However, where there is enough water to waterlog the plants for 8 weeks this should be started immediately after transplanting.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 61 , Issue 1 , August 1963 , pp. 115 - 119
Copyright
Copyright © Cambridge University Press 1963

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

Amatatsu, K., Yamakawa, H., Hatsuku, F. et al. (1954). Bull. Kyushu Agric. Exp. Stat. no. 2, p. 99.Google Scholar
Aoki, M. (1941). J. Sci. Soil Tokyo, 15, 182.Google Scholar
Enyi, B. A. C. (1960). M.Sc. Thesis, London University.Google Scholar
Lord, L. & Fernandes, W. M. (1931). Trop. Agriculturist, 76, 329.Google Scholar
Tang, S. & Chao, P. (1941). Nanking J., Sect. C, 11, no. 3, p. 33.Google Scholar
Utagawa, I. & Kuraishi, T. (1935). J. Sci. Soil Tokyo, 9, 180.Google Scholar
Yoshino, O. & Kawasaki, I. (1953). Proc. Crop Sci. Soc. Japan, 21, 211.CrossRefGoogle Scholar