Can we establish canola from depth? – Moree, Blackville and Glasshouse studies 2012

Abstract

Key findings • The optimum establishment for all canola varieties was achieved with the 25 mm planting depth, with up to a 55 and 85% reduction in plant establishment when planting depths extended to 50 and 75 mm, respectively. • There were significant differences between varieties in establishment at the different depths with large seeded hybrid varieties being least affected by planting depth. • High stubble loads can significantly reduce canola establishment by 25–60% depending on planting depth. • A combination of hybrid vigour and seed size appeared to explain the better establishment results from Pioneer® 44Y84; however, the expression of hybrid vigour was not evident when seed diameter was less than 1.4 mm.