Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-14T22:27:16.906Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence of NAA and nitrogen on the growth and yield of late-planted paddy (Oryza sativa L.)

Published online by Cambridge University Press:  27 March 2009

H. S. Grewal  and
H. S. Gill
H. S. Grewal
Affiliation:
Department of Agronomy, Punjab Agricultural University, Ludhiana, Punjab, India
H. S. Gill
Affiliation:
Department of Agronomy, Punjab Agricultural University, Ludhiana, Punjab, India
Get access Rights & Permissions [Opens in a new window]

Summary

Field experiments were carried out at Ludhiana in Punjab during 1982 and 1983 on the effect of foliar application of water spray or naphthalene acetic acid (NAA) at 100 and 200 mg/1 of water on the growth and yield of rice when applied at tillering and before panicle emergence stages of late-transplanted paddy grown under four levels of nitrogen (0, 60, 90 and 120 kg/ha). Foliar spray of NAA significantly increased the grain yield of paddy as compared with water spray under low levels of nitrogen (0 and 60 kg/ha) owing to increases in the number of ear-bearing shoots per plant, number of filled grains per panicle and grain weight. Chlorophyll content of leaves, leaf area index and interception of photosynthetically active radiation by the crop canopy also increased with foliar spray of NAA and application of nitrogen. Paddy responded significantly up to 90 kg N/ha in terms of grain yield whereas straw yield increased significantly up to 120 kg N/ha. However, grain mass declined significantly with increase in nitrogen from 90 to 120 kg/ha.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 106 , Issue 1 , February 1986 , pp. 37 - 40
Copyright
Copyright © Cambridge University Press 1986

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

Dey, S. C. (1980). Effect of foliar application of some chemicals on growth and yield of rice (Oryza saliva L.) cv. Masuri. Journal of Research Assam Agricultural University 1, 206–208.Google Scholar
Orsi, S. & Tallarico, R. (1983). Use of plant growth regulators and biostimulants in wheat and barley. Information Agraria 39, 27539–41.Google Scholar
Pandey, S. N. (1975). Effect of planofix (NAA) on flower abscission and productivity of Arhar (Cajanus cajan) and soybean (Glycine max). Pesticides 9, 42–44.Google Scholar
Shih, C. Y., Chang, H., Yang, S. C. & Wu, Y. L. (1982). Effect of foliar application of fertilizers and growth regulators on the yield of second rice crop. Plant Growth Regulators Abstracts 8, 1917.Google Scholar
Singh, B. K., Thakur, R. B. & Singh, R. P. (1982). Effect of nitrogen fertilizer levels and spacing on performance of Kharvhan rice. Indian Journal of Agronomy 27, 310–312.Google Scholar
Thind, A. S., Singh, B. K. & Deol, P. S. (1983). Effect of different sources and levels of nitrogen fertilizers on rice grain yield. International Rice Research Newsletter 8, 23.Google Scholar
Witham, F. H., Blaydes, D. F. & Devlin, R. M. (1971). Experiments in Plant Physiology, pp. 55–56. New York: Van Nostrand Reinhold.Google Scholar