Planting is 70 % complete in southern areas, and freezing overnight temperatures has kept most growers in northern areas out of the field. Cold temperatures are delaying emergence, with early planted canola taking 14-21 days to emerge. There have been several reports of low emergence and frost damage to very early planted canola. Begin to check stand emergence 10-14 days after planting. Young plants are vulnerable to flea beetles, seedling diseases, cutworms and if they are struggling through cool temperatures, frost or wind damage. Patchy emergence could be a sign of insect damage or seedling disease issues. Seed treatments for flea beetles could begin to run out 3-4 weeks after planting. An acceptable target stand is 4-5 plants/ft2. Scout emerged canola every 2-3 days for flea beetles.
Written by Brian Hall
Former Canola and Edible Bean Specialist (retired)
April 14, 2021
August 25, 2020