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Pakistan Journal of Biological Sciences
  Year: 1998 | Volume: 1 | Issue: 4 | Page No.: 348-350
DOI: 10.3923/pjbs.1998.348.350
 
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Response of Two Sunflower (Helianthus annuus L.) Cultivars To Different Levels of Nitrogen

M. Ayub, A. Tanveer, Z. Iqbal, M.S. Sharar and M. Azam

Abstract:
Response of two sunflower cultivars namely Aritar-93 and suncom-110 to N levels of 0, 50, 100 and 150 kg ha–1 was studied under field conditions. Sunflower cultivar suncom-110 produced significantly higher plant height, leaf area per plant, 1000-achene weight and achene yield. Plant height, leaf per plant, stem diameter, no. of achenes per disc and achene protein contents were maximum at N level of 150 kg ha–1. Whereas, oil contents were significantly higher in control. Nitrogen application at 100 and 150 kg ha–1 gave statistically similar achene yields of 15.95 and 16.18 q ha–1 respectively. Application of nitrogen more than 100 kg ha–1 seems to be uneconomical.
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How to cite this article:

M. Ayub, A. Tanveer, Z. Iqbal, M.S. Sharar and M. Azam, 1998. Response of Two Sunflower (Helianthus annuus L.) Cultivars To Different Levels of Nitrogen. Pakistan Journal of Biological Sciences, 1: 348-350.

DOI: 10.3923/pjbs.1998.348.350

URL: https://scialert.net/abstract/?doi=pjbs.1998.348.350

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