Late sprays. Second applications applied late can reduce profitability it two ways: A competitive crop growing ahead of the weeds may not need a second application. A late application can cause a surprising level of hidden damage to canola plants, setting back yield potential. Read more
More drift. Wind and rain have reduced the opportunities to spray, which forces operators to apply in less than ideal conditions. This can increase the drift risk. Here are tips to reduce drift risk.
Herbicide carryover damage tends to reveal itself early in the growing season, but it could be showing up in fields seeded late or emerging slowly in dry conditions. Here is an older article on situations that increase carryover risk.