Effect of irrigation and nitrogen on growth and yield of sunflower (Helianthus annuus)


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Authors

  • U K PRASAD
  • T N PRASAD
  • A KUMAR

Keywords:

cumulative pan evaporation soil moisture depletion, water-use efficiency, oil content

Abstract

An experiment on summer sunflower (Helianthus annuus L.) was conducted during 1994-96 with 4 irrigation levels based
on the ratio of irrigation watcr depth: cumulative pan evaporation (IW : CPE) and 4 nitrogen levels in Bihar. The
results showed that seed yield increased significantly at IW : CPE ratio of 0.8 (1.49 tonnes/ha) with 6 cm depth
comprising of 6 irrigation. But water-use efficiency was higher at 0.6 ratio with 4 irrigation. Response to nitrogen Was
recorded only up to 40 kg N/ha. Plant height, dry-matter/plant and capitulum diameter were maximum at 0.8 IW : CPE ratio.
But I 000-seed weight increased only at [W : CPE of 0.6 and 40 kg N/ha. Total nitrogen uptake and net return were also
highest at 0.8 IW : CPE ratio and 40 kg N/ha. Soil-moisture depletion was higher from 0-60 m layer with 4-6
irrigation, whereas relative depletion in lower soil profile'(60-90 cm) was more in rain fed control.

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Author Biographies

  • U K PRASAD
    Chief Scientist (Water Management), Rajendra Agricultural University, Pusa, Bihar 848 125
  • T N PRASAD
    Senior Scientist (Water Management), Rajendra Agricultural University, Pusa, Bihar 848 125
  • A KUMAR
    Research Fellow, Department of Agronomy, Rajendra Agricultural University, Pusa, Bihar 848 125

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Issue

Vol. 69 No. 8 (1999)

Section

Articles

License

The copyright of the articles published in The Indian Journal of Agricultural Sciences is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

PRASAD, U. K., PRASAD, T. N., & KUMAR, A. (2013). Effect of irrigation and nitrogen on growth and yield of sunflower (Helianthus annuus). The Indian Journal of Agricultural Sciences, 69(8). https://epubs.icar.org.in/index.php/IJAgS/article/view/26955