Here are some simple tips for correctly identifying these commonly mistaken weed seedlings:
It is difficult to ID either plant based on cotyledon alone. The first true leaves tend to be the first indication there is a difference. A dandelion seedlings first true leaves will have sparse, irregular toothing on the edges of the leaves. These “spiked” margins tend to point back towards the middle of the plant.
For cereals there are many options that will effectively control both weed seedlings. Select a preburn option that includes one of more of the following actives, Florasulam, Tribenuron, Pyraflufen-ethyl and/or Halauxifen (Arylex).
For canola, the preburn options are much smaller and therefore you will have to rely on your glyphosate rates for control of these weed seedlings. Fortunately, there is a new Gr. 4 active, Halauxifen (Arylex) which has exceptionally good activity on both NLHB and Dandelion seedlings.
For pulses, several actives such as Tribenuron and Pyraflufen-ethyl can be added to your preburn glyphosate and control these seedlings very well.
NLHB and Dandelion remains a challenge to control in any cropping system. Both species thrive in late fall/ early spring, so it is key to control them early in the growing season. Fortunately, there are now many effective preburn options available and the need to rely on glyphosate alone for control is now much less.