A two-year field study was conducted to investigate the performance of seeding canola crop as influenced by types of residue (canola, wheat, and pea) and types of seed opener (disc and hoe). Seed placement (seeding depth and seed scattering index), speed of crop emergence, and plant populations were used to evaluate the seeding performance. Seeding placement as affected by field wheel tracks (inside and outside wheel tracks) was also examined. The results showed that the disc opener produced a greater seeding depth and faster emergence than the hoe opener. The two openers resulted in the same level of plant population. In the first year, plots with pea residue resulted in greater and more uniform seeding depth, faster emergence, and higher plant population than plots with wheat and canola residues. In the second year, a better uniformity of seeding depth was observed for pea residue than the other two types of residue, while there were no significant differences between residue types in the other measured variables due to the extremely dry soil condition in the spring of that year. Seeds were placed more uniformly outside the wheel track than inside the wheel track, while the mean seeding depths were similar inside and outside the wheel track.
