Canola (Brassica napus L.) Cultivation in Rotation after Rice under Different Levels of Nitrogen and Plant Densities

2008 ◽  
Vol 7 (5) ◽  
pp. 500-504 ◽  
Author(s):  
S. Ghadicolaei Morteza ◽  
D. Jahan Far ◽  
Y. Esmaeil ◽  
N. Morteza ◽  
M. Saedeh
1990 ◽  
Vol 70 (1) ◽  
pp. 127-137 ◽  
Author(s):  
M. J. MORRISON ◽  
P. B. E. McVETTY ◽  
R. SCARTH

To determine the effects of varying plant densities on summer rape (Brassica napus L.), the cultivar Westar was seeded in 15- and 30-cm row spacings at seeding rates of 1.5, 3.0, 6.0, and 12.0 kg ha−1. Plants seeded in 15-cm rows yielded more per area, produced more pods per plant and lodged less than those in 30-cm rows. Higher yields were associated with a more even plant distribution and a lower degree of intra-row competition. There were no significant protein, oil and chlorophyll concentration differences between the row spacing treatments. The highest yields (kg ha−1) were achieved with the 1.5 and 3.0 kg ha−1 seeding rates. Summer rape compensated for lower plant densities with the production of more branch racemes. As seeding rate increased, competitive mortality increased, resulting in greater etiolation at bolting, and greater lodging at harvest. Seed oil and protein concentrations were not affected by seeding rate. However, seed chlorophyll concentration decreased with increased seeding rate.Key words: Brassica napus, plant density, seed quality, rape (summer)


1999 ◽  
Vol 2 (4) ◽  
pp. 1478-1480 ◽  
Author(s):  
Kafeel Ahmed ◽  
Nuhammad Iqbal ◽  
Abid Nisar Ahmad ◽  
Iftikhar Ahmed ◽  
Ghulam Yasin

2019 ◽  
Vol 51 (6) ◽  
Author(s):  
Samrin Gul ◽  
Razi Uddin ◽  
Naqib Ullah Khan ◽  
Shahid Ullah Khan ◽  
Sardar Ali ◽  
...  

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