The influence of seeding date and seeding rate on seed yield and yield components of 5 genotypes of brassica napus
Degenhardt, D.F.; Kondra, Z.P.
Canadian Journal of Plant Science 61(2): 175-184
ISSN/ISBN: 0008-4220 Accession: 006700188
The effects of seeding date and seeding rate on the agronomic characteristics of 5 genotypes of B. napus L. were studied for 2 yr at 2 locations in western Canada. Delayed seeding resulted in a significant increase in vegetative and total yield but a significant decrease in seed yield, harvest index, plant density, racemes per plant and racemes per unit area. Seeding date had no significant effect on seed yield per plant, 1000-seed weight and plant height. Increased seeding rate resulted in a significant increase in plant density and racemes per unit area, but a significant decrease in harvest index, racemes per plant, seed yield per plant and plant height. Seeding rate had no significant effect on seed, vegetative or total yield and 1000-seed weight. There were significant differences due to genotypes for all variables except total yield and racemes per unit area.