SOIL Studies

SOIL Studies

2014, Vol 3, Num, 2     (Pages: 081-089)

The Effect of Different Intra-Row Spacing and Nitrogen Levels on Yield and Yield Components of Hybrid Confectionery Sunflower (Helianthus annuus L.) in Ankara Conditions

Sibel DAY 1 ,Özer KOLSARICI 1

1 Ankara Üniversitesi Ziraat Fakültesi Tarla Bitkileri Bölümü, ANKARA

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This research was conducted at the experimental field of Department of Field Crops, Faculty of Agriculture, University of Ankara in 2007 and 2008. The aim of the research was to determine the effects of different intra-row spacings (20, 30 and 40 cm) and nitrogen doses (0, 4, 8 and 12 kg da-1) on yield and yield components of confectionery sunflower genotype 03M142. The experiment was laid on `Randomized Complete Block Design` as split plots with three replications. Plant height, head diameter, seed yield per head, 1000 seed weight, hull ratio, seed yield, oil ratio and protein ratio were investigated. According to the results observed in both years, the highest plant height was 157.3 cm at 12 kg N da-1 and the highest seed yield was observed as 410.3 kg da-1 at 20 cm intra-row spacing with 12 kg N da-1 in the second year. Results revealed that decreased intra-row spacing and increased nitrogen doses led to increase of the seed yield.


Keywords : Nitrogen dose, confectionery sunflower, intra-row spacing