African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Effects of application boron on yields, yield component and oil content of sunflower in boron-deficient calcareous soils

Ercan Ceyhan1*, Mustafa Önder1, Özden Öztürk1, Mustafa Harmankaya2, Mehmet Hamurcu2 and Sait Gezgin2
1Selcuk University, Agriculture Faculty, Department of Field Crops, Konya-Turkey. 2Selcuk University, Agriculture Faculty, Department of Soil Sciences, Konya-Turkey.
Email: [email protected]

  •  Accepted: 21 July 2008
  •  Published: 18 August 2008

Abstract

The study was conducted to investigate the effects of five boron (B) doses; 0, 2.5, 5.0, 7.5 and 10.0 kg B ha-1 in B-deficient calcareous soils on yield and some yield components of four sunflower genotypes. Genotypes have shown variations with respect to their responses to B applications. AS-615 and Coban had the highest seed yield (3.75 and 3.23 t ha-1, respectively) at 7.5 kg B ha-1, whereas S-288 and TR-4098 yielded 4.17 and 3.28 t ha-1, respectively, at 0 kg B ha-1. Therefore, S-288 and TR-4098 can be indicator genotypes for B toxicity. The other genotypes appeared to have high sensitivity to B deficiency. For AS-615 and Coban, application at 7.5 kg B ha-1 level was found to be sufficient for adequate grain yield, whereas further B levels might have detrimental effects on grain yield.

 

Key words: Sunflower, boron, seed yield, yield component, oil content.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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