Effects of Planting Date and Tillage on Winter Canola

Establishment and winter survival are two major challenges of growing winter canola (Brassica napus L.) in the central Great Plains. This study evaluated five planting dates between 15 August and 15 October and tillage method (conventional tillage and no tillage) on winter canola fall plant density, fall crown height, fall vigor, winter survival, spring plant density, spring vigor, and yield. Planting date affected all measurements while tillage only affected yield. Conventional tillage yielded 8% more than no tillage. Canola needs to be planted earlier than previously recommended: between 15 August and 1 September for successful winter survival and seed production in western Kansas.