Effect of different levels of Nitrogen fertilizer and row spacing on growth traits, of Rape seed ( Brassica napus L. ) | ||
| Kirkuk University Journal For Agricultural Sciences | ||
| Article 1, Volume 3, Issue 2, December 2012, Pages 152-168 PDF (755.35 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.58928/ku12.03213 | ||
| Authors | ||
| Ali H. R. Al-Dawdi; Muhsin A.A. AL-Janabi | ||
| Abstract | ||
| This study was conducted at the experimental farm of Field Crops Science Department , College of Agriculture , University of Tikrit , during the Autumn season of 2003 and Spring season of 2004 to study the effect of four nitrogen fertilizer levels ( 0 , 60 , 120 and 180 kg N/ha) with three rows spacing (20 , 30 and 40 cm) on the growth traits, yield and it's components of Rape seed ( Brassica napus L. var. pactol).The R.C.B.D with three replications was used in this experiment. The results indicated that the Nitrogen fertilizer applications significantly affected on first branch height (cm) , leaf area (cm2/plant) , namber of days from sowing to 100% maturity, in both seasons , while number of secondary branches /plant in autumn season only. No. of days from sowing to 50% flowering in spring season were found to be significant . The rows spacing affected significantly on most of the studied traits, The row spacing 30cm gave the highest rate for leaf area (cm2/plant) in autumn season , while the data showed that 40cm row spacing gave significant effects for No. of secondary branches/plant in Autumn season and No. of primary branches/plant and leaf area (cm2/plant) in spring season. A significant interaction were found between Nitrogen fertilize and rows spacing for all of the studied characters . | ||
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