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Full Length Research Paper
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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.
*Corresponding author. E-mail:
eceyhan@selcuk.edu.tr.
Accepted 21 July, 2008 |
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Abstract |
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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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