Sowing date effect on flowering and grain yield of twelve canola varieties – Leeton 2018

Abstract

Key findings •• The second sowing date of 11 April had the highest average grain yield for the spring varieties. Grain yield was significantly reduced in these varieties (except Nuseed Diamond) when sowing date was delayed from 11 April to 1 May. •• Nuseed Diamond maintained a high grain yield when the sowing date was delayed to 1 May with a reduced risk of frost damage from flowering starting later. •• The first sowing date of 27 March had the highest average grain yield for the winter varieties, with a general yield decline as sowing time was delayed. •• Spring varieties were generally higher yielding than the winter varieties. •• Triazine tolerant varieties were generally lower yielding compared with other varieties with a similar phenology.